BACKGROUND

[0001] An image forming apparatus may refer to a device that is to generate, print, receive, or transmit image data. For example, the image forming apparatus may include a printer, a scanner, a copier, a fax machine, or a multifunction printer implemented by integrating a plurality of functions of such devices. [0002] Such an image forming apparatus may be provided with a tray that provides a space in which a print medium can be seated. The print medium seated in such a tray may be aligned in width and length through a guide.

BRIEF DESCRIPTION OF THE DRAWINGS

[0003] FIG. 1 is a perspective view of an image forming apparatus according to an example.

[0004] FIG. 2 is a partially enlarged view of portion A in FIG. 1 according to an example.

[0005] FIG. 3 is a partial perspective view of the image forming apparatus in FIG. 1 according to an example.

[0006] FIG. 4 is a sectional view taken along line B-B' in FIG. 3 according to an example.

[0007] FIG. 5 is a view showing a state in which a first guide is moved relative to a switch block and a second guide according to an example.

[0008] FIG. 6 is a schematic diagram illustrating relative positions of first to fourth length regions according to an example.

DETAILED DESCRIPTION

[0009] Hereinafter, examples will be described with reference to the accompanying drawings.

[0010] In the present specification, a component that is described as

SUBSTITUTE SHEET (RULE 26) “connected” or “seated” to another component may be understood to be directly connected or seated to the latter component or a third component may be interposed between the two components.

[0011] Specific terms used in the present specification are to describe various examples without limiting the disclosure. An expression used in the singular encompasses the expression of the plural, unless it has a clearly different meaning in the context.

[0012] The terms used herein, including ordinal numbers such as “first” and “second” may be used to describe, and not to limit, various components. The terms simply distinguish the components from one another.

[0013] The meaning of “including” as used in the specification refers to a specific characteristic, region, integer, operation, action, element, and/or component, and does not limit the existence or addition of another specific characteristic, region, integer, operation, action, element, component, and/or group thereof.

[0014] Hereinafter, an example of an image forming apparatus will be described with reference to the drawings.

[0015] An image forming apparatus may generate, print, receive, and/or transmit image data. For example, the image forming apparatus may be a copier, a printer, a scanner, a fax machine, and a multi-function peripheral printer (MFP) that complexly implements functions of the copier, the printer, the scanner, and the fax machine through one apparatus. In the subject specification, the image forming apparatus will be described as a printer for sake of convenience.

[0016] FIG. 1 is a perspective view of an image forming apparatus according to an example.

[0017] Referring to FIG. 1 , the image forming apparatus 1 may print data generated by a terminal device such as a computer or the like on a print medium such as paper or the like. The image forming apparatus 1 may identify the type of the print medium by detecting the size of the print medium. For example, the image forming apparatus 1 may identify the type of the print medium such as A4, B5, etc. according to the width and length of the print medium accommodated therein. The image forming apparatus 1 may include a case 10 and a tray 20.

SUBSTITUTE SHEET (RULE 26) [0018] The case 10 may form the exterior of the image forming apparatus 1 and may support the tray 20. In addition, a space in which the tray 20 can be accommodated may be formed in the case 10. For example, the tray 20 may be selectively mounted on the case 10. In other words, the tray 20 may be detachably attached to the case 10.

[0019] The tray 20 may provide a space to accommodate several sheets of print media. In addition, the tray 20 may be inserted into the case 10 or removed from the case 10. The tray 20 may be inserted into the case 10 while accommodating several sheets of print media. The tray 20 may include a body part 100, a guide unit 200, and a switch block 300 including a first switch 310, a second switch 320, a third switch 330, and a fourth switch 340.

[0020] The body part 100 may include a frame that provides a seating space S in which a print medium can be seated. The body part 100 may be slidably movable with respect to the case 10 so that the user can seat a print medium in the seating space S or remove it from the seating space S.

[0021] The seating space S may have a length in a first direction (i.e., a first direction length) and a length in a second direction (i.e., a second direction length). The first direction and the second direction may be, for example, perpendicular to each other and parallel to the ground (i.e., a bottom of the image forming apparatus 1 ). The first direction length of the seating space S may be, for example, the 'width of the seating space S', and the second direction length of the seating space S may be, for example, the 'length of the seating space S'. In addition, the first direction may be a width direction, and the second direction may be a length direction.

[0022] FIG. 2 is a partially enlarged view of portion A in FIG. 1 according to an example. FIG. 3 is a partial perspective view of the image forming apparatus in FIG. 1 according to an example.

[0023] Referring to FIGS. 2 and 3, the guide unit 200 can adjust the width and length of the seating space S. The guide unit 200 may allow the print medium to be seated in the seating space S in an aligned state. The guide unit 200 may include a first guide 210 and a second guide 220.

[0024] The first guide 210 may be movably supported by the body part 100

SUBSTITUTE SHEET (RULE 26) so that the width of the seating space S may be adjusted. The print media seated in the seating space S may be aligned by the first guide 210 so as not to deviate from each other in the width direction. In other words, the width direction edges of the print media seated in the seating space S may be aligned by the first guide

210 without protruding from each other. For example, the first guide 210 may be a 'width direction guide'. One end of the first guide 210 may be movable to adjust the first direction length of the seating space. In addition, the other end of the first guide 210 may be disposed to face the switch block 300 to activate or deactivate the first switch 310 according to the first direction length of the print medium.

[0025] In addition, the other end of the first guide 210 may be located at a position where the first switch 310 can be activated or deactivated based on the first direction length of the seating space S being adjusted to correspond to the first direction length of the print medium. Based on the first direction length of the seating space S being adjusted to correspond to the first direction length of the print medium, the printing media seated in the seating space S can be placed in an aligned state so as not to deviate from each other in the width direction.

[0026] The first guide 210 may include a first adjustment part 211 , a first lever part 212, and a first link part 213.

[0027] The first adjustment part 211 may be supported to be movable with respect to the body part 100 along the width direction. The first adjustment part

211 may be movable to adjust the second direction length of the seating space S. The first adjustment part 211 may identify the width of the seating space S. For example, based on the first adjustment part 211 being moved along the width direction toward the center of the body part 100, the width of the seating space S may be reduced. In addition, based on the first adjustment part 211 being moved along the width direction away from the center of the body part 100, the width of the seating space S may be increased.

[0028] At least a portion of the first lever part 212 may activate the switch block 300. For example, the first lever part 212 may have a shape in which at least a portion thereof can reach an overlap region. Based on at least a portion of the first lever part 212 reaching the overlap region, the first switch 310 may be activated. In addition, at least a portion of a second lever part 222 and at least a

SUBSTITUTE SHEET (RULE 26) portion of the first lever part 212 may both reach the overlap region.

[0029] The first lever part 212 may be moved to be located at a position for activating or deactivating the first switch 310 based on the first adjustment part 211 being moved. For example, the first lever part 212 may be located at a position for deactivating the first switch 310 based on the first direction length of the seating space S being adjusted by the first adjustment part 211 to correspond to the first direction length of a first print medium and a second print medium to be described later.

[0030] The first lever part 212 may be rotated in response to the movement of the first adjustment part 211. For example, based on the first adjustment part 211 being moved along the width direction, the first lever part 212 may be rotated about a rotation axis R1 perpendicular to the longitudinal direction and the width direction. For example, the first lever part 212 may be rotated within a preset rotation angle range based on the first adjustment part 211 being moved along the width direction. As a more detailed example, the first lever part 212 may be rotatably connected to the body part 100 and may be rotatable by a preset rotation angle about the rotation axis R1 provided by the body part 100. The first lever part 212 may be disposed to face the switch block 300 to activate or deactivate the first switch 310 according to the second direction length of the print medium. The first lever part 212 may include a first sensing member 212a and a first overlap member 212b.

[0031] The first sensing member 212a may be detected by the third switch 330 through rotation. For example, the first sensing member 212a may be detected by the third switch 330 by relatively moving with respect to the switch block 300. The first sensing member 212a may have a shape protruding and extending away from the body part 100 toward the switch block 300. There may be provided a plurality of first sensing members 212a. The first sensing members 212a may be disposed to be spaced apart from each other in the length direction. In addition, a first separation space S1 recessed toward the center of the body part 100 in the width direction may be formed between the first sensing members 212a. In other words, based on the third switch 330 being disposed to face the first separation space S1 , the first sensing member 212a may not be detected by

SUBSTITUTE SHEET (RULE 26) the third switch 330.

[0032] The first overlap member 212b may be detected by the first switch 310 through rotation. For example, the first overlap member 212b may be detected by the first switch 310 by being relatively moved with respect to the switch block 300. There may be provided a plurality of first overlap members 212b. The first overlap members 212b may be spaced apart from each other in the length direction. In addition, a second separation space S2 may be formed between the second lever part 222 and the upper end of the first overlap member 212b.

[0033] The height of the upper end of the first overlap member 212b may be lower than the height of the lower end of the second overlap member 222b. Based on the first overlap member 212b and the second overlap member 222b moving relative to each other, the first overlap member 212b and the second overlap member 222b may not interfere with each other. In other words, the movement of the first guide 210 and the movement of the second guide 220 may not interfere with each other.

[0034] The first link part 213 may extend from the first lever part 212 and may be connected to the first adjustment part 211. A slot may be formed in the first link part 213. The first adjustment part 211 may be connected to the first link part 213 to be movable along the slot of the first link part 213.

[0035] The first link part 213 may be connected to the body part 100 to be rotatable with respect to the body part 100. For example, the first link part 213 may be rotated with respect to the body part 100 about the rotation axis R1 perpendicular to the ground, which is provided by the body part 100. In addition, the first link part 213 may be rotated as the first adjustment part 211 moves along the slot. As a more detailed example, based on the first link part 213 being rotated, the first lever part 212 may also be rotated.

[0036] The second guide 220 may be movably supported by the body part 100 so that the length of the seating space S is adjustable. The print media seated in the seating space S may be aligned by the second guide 220 so as not to be misaligned with each other in the length direction. In other words, the length direction edges of the print media seated in the seating space S may be aligned

SUBSTITUTE SHEET (RULE 26) by the second guide 220 without protruding from each other. For example, the second guide 220 may be a 'length direction guide'. One end of the second guide 220 may be movable to adjust the first direction length of the seating space S. In addition, the other end of the second guide 220 may be disposed to face the switch block 300 to activate or deactivate the second switch 320 according to the first direction length of the print medium.

[0037] In addition, the other end of the second guide 220 may be located at a position where the second switch 320 can be activated or deactivated based on the second direction length of the seating space S being adjusted to correspond to the second direction length of the print medium. Based on the first direction length of the seating space S being adjusted to correspond to the first direction length of the print medium, the printing media seated in the seating space S may be in an aligned state so as not to deviate from each other in the width direction. The second guide 220 may include a second adjustment part 221 , the second lever part 222, and a second link part 223.

[0038] The second adjustment part 221 may be supported to be movable with respect to the body part 100 in the length direction. The second adjustment part 221 may be movable so that the first direction length of the seating space S is adjusted. The second adjustment part 221 may identify the length of the seating space S. For example, based on the second adjustment part 221 being moved along the length direction toward the center of the body part 100, the length of the seating space S may be reduced. In addition, based on the second adjustment part 221 being moved along the length direction away from the center of the body part 100, the length of the seating space S may be increased.

[0039] At least a portion of the second lever part 222 may be detected by the switch block 300. For example, the second lever part 222 may have a shape in which at least a portion thereof can reach the overlap region. Based on at least a portion of the second lever part 222 reaching the overlap region, the first switch 310 may be activated. The second lever part 222 may be moved to be located at a position for activating or deactivating the second switch 320 based on the second adjustment part 221 being moved.

[0040] Furthermore, the second lever part 222 may be located at a position

SUBSTITUTE SHEET (RULE 26) for activating the first switch 310 based on the second direction length of the seating space S being adjusted by the second adjustment part 221 to correspond to the second direction length of a first print medium. In addition, the second lever part 222 may be located at a position for deactivating the first switch 310 based on the second direction length of the seating space S being adjusted by the second adjustment part 221 to correspond to the second direction length of a second print medium.

[0041] The second lever part 222 may be moved in response to the movement of the second adjustment part 221 . For example, based on the second adjustment part 221 being moved toward one side in the length direction, the second lever part 222 may be moved toward the other side in the longitudinal direction. The other side in the length direction is opposite to the one side in the length direction. The second lever part 222 is disposed to face the switch block 300 to activate or deactivate the second switch 320 according to the first direction length of the print medium. The second lever part 222 may include a second sensing member 222a and a second overlap member 222b.

[0042] The second sensing member 222a may activate or deactivate the fourth switch 340 by being moved along the length direction. For example, the second sensing member 222a may activate or deactivate the fourth switch 340 by relatively moving with respect to the switch block 300.

[0043] There may be provided a plurality of second sensing members 222a. The second sensing members 222a may be disposed to be spaced apart from each other in the length direction. For example, the separation distance between the second sensing members 222a adjacent to each other among the plurality of second sensing members 222a may be smaller than the separation distance between the fourth switch 340 and the second switch 320.

[0044] The second sensing member 222a may be movably connected to one side of the body part 100 in the width direction and may be relatively movable with respect to the body part 100 and the switch block 300.

[0045] The second overlap member 222b may activate or deactivate the first switch 310 by being moved along the width direction. For example, the second overlap member 222b may be relatively moved with respect to the switch

SUBSTITUTE SHEET (RULE 26) block 300 to activate or deactivate the first switch 310. The second overlap member 222b may have a shape protruding and extending downward from the second sensing member 222a. A lower end of the second overlap member 222b may be disposed above a lower end of the first switch 310.

[0046] The second link part 223 may be connected to the second adjustment part 221 to be movable with respect to the second adjustment part 221. For example, a slot to guide the movement of the second adjustment part 221 may be formed on one side of the second link part 223. Based on the second adjustment part 221 being moved along the slot of the second link part 223 so that the length of the seating space S becomes smaller or larger, the second link part 223 may be rotated with respect to a rotation axis R2 perpendicular to the length direction and the width direction. The second adjustment part 221 may be rotatable about the rotation axis R2 provided by the body part 100 in a state in which the second adjustment part 221 is connected to the body part 100.

[0047] In addition, the second link part 223 may be connected to the second lever part 222 to be movable with respect to the second lever part 222. For example, a slot to guide the movement of the second lever part 222 may be formed on the other side of the second link part 223. As a more detailed example, the second link part 223 may move the second lever part 222 to the other side in the length direction as the second link part 223 is moved toward one side in the length direction along the slot of the second lever part 222 so that the length of the seating space S is reduced.

[0048] FIG. 4 is a sectional view taken along line B-B’ in FIG. 3 according to an example. FIG. 5 is a view showing a state in which a first guide is moved relative to a switch block and a second guide according to an example.

[0049] Referring to FIGS. 4 and 5, the switch block 300 may be activated or deactivated by the guide unit 200. The switch block 300 may be activated or deactivated through contact with the guide unit 200. As another example, the switch block 300 may be activated or deactivated based on the spaced-apart distance between the guide unit 200 and the switch block 300 being less than or equal to a preset distance.

[0050] The switch block 300 may be brought into contact with at least one

SUBSTITUTE SHEET (RULE 26) of the first lever part 212 or the second lever part 222 so that the switch block 300 can be activated by the first lever part 212 or the second lever part 222. The switch block 300 may include an elastic member that can be bent by being pressed and pushed by the first lever part 212 or the second lever part 222. However, the present disclosure is not limited to this example. The switch block 300 may include an optical sensor or an ultrasonic sensor capable of detecting that the guide unit 200 has reached a first region, a second region, or an overlap region X2 even based on it being spaced apart from the first lever part 212, the second lever part 222, and the like. The first region may be referred to as, for example, a width region. The width region refers to a region to which the first guide 210 can reach depending on the print medium seated in the seating space S. The second region may be referred to as, for example, a length region. The length region refers to a region to which the second guide 220 can reach depending on the print medium seated in the seating space S. The overlap region X2 refers to a region to which the first lever part 212 and the second lever part 222 can reach depending on the print medium seated in the seating space S. The overlap region X2 may be referred to as, for example, a second length region X2. [0051] In addition, the switch block 300 may be fixedly disposed to face one side of the body part 100. The switch block 300 may be fixedly disposed at a preset position in the case 10. The switch block 300 may include the first switch 310, the second switch 320, the third switch 330, and the fourth switch 340.

[0052] The first switch 310 may be activated or deactivated depending on either the length in the first direction or the length in the second direction of the print medium. The first switch 310 may be activated or deactivated by at least one of the second overlap member 222b and the first overlap member 212b.

[0053] The first switch 310 may be activated depending on the first direction length of an arbitrary print medium based on the first direction length of the print medium falling within a preset range. The first switch 310 may be activated based on at least one of the second guide 220 and the first guide 210 reaching the overlap region X2.

[0054] As illustrated in FIG. 5, the first switch 310 may extend in the vertical direction. The first switch 310 may include an upper portion of the first switch 310

SUBSTITUTE SHEET (RULE 26) disposed on an upper side L of a virtual straight line extending in the length direction while passing through any portion of the first switch 310, and a lower portion of the first switch 310 disposed on a lower side W of the virtual straight line. The first switch 310 may be activated based on, for example, the upper portion of the first switch 310 and the second overlap member 222b being adjacent to each other. In addition, the first switch 310 may be activated based on, for example, the lower portion of the first switch 310 and the first overlap member 212b being adjacent to each other. The first switch 310 may be disposed below the second switch 320 to be spaced apart from the second switch 320.

[0055] The second switch 320 may be activated or deactivated depending on the first direction length of the print medium. The second switch 320 may be activated based on the second guide 220 reaching a third length region X3. The second switch 320 may be activated or deactivated by the second sensing member 222a.

[0056] The third switch 330 may be activated based on the first guide 210 reaching the width region. For example, the third switch 330 may be activated or deactivated by the first sensing member 212a. The third switch 330 may be disposed below the first switch 310.

[0057] The fourth switch 340 may be activated based on the second guide 220 reaching the first length region X1 . The fourth switch 340 may be activated or deactivated by the second sensing member 222a. Further, the second switch 320 and the fourth switch 340 may be activated based on the second guide 220 reaching a fourth length region X4. The fourth switch 340 may be arranged to be spaced apart from the second switch 320 in the length direction. In addition, the fourth switch 340 may be disposed above the first switch 310.

[0058] Hereinafter, with reference to Table 1 below, a description will be made of which of the second switch 320, the first switch 310, the fourth switch 340, and the third switch 330 is activated and deactivated by the guide unit 200 as first to sixth print media different from each other are accommodated in the tray 20.

[0059] In this regard, the first print medium may be, for example, 'B5 SEF paper' in Table 1 , the second print medium may be, for example, 'Ltr SEF paper'

SUBSTITUTE SHEET (RULE 26) in Table 1 , the third print medium may be, for example, 'A5 SEF paper' in Table 1 ', the fourth print medium may be, for example, 'FOLIO paper' in Table 1 , the fifth print medium may be, for example, 'A4 SEF paper' in Table 1 , and the sixth print medium may be, for example, 'Legal paper' in Table 1.

SUBSTITUTE SHEET (RULE 26) Table 1

[0060] The unit of width and length in Table 1 is millimeter (mm).

[0061] The first range may include a first width range, a second width range, a third width range, and a fourth width range. This first range may be referred to as, for example, a width range.

[0062] The second range may include a first length range, a second length range, a third length range, a fourth length range, a fifth length range, and a sixth length range. This second range may be referred to as, for example, a length range.

[0063] Hereinafter, the first print medium and the second print medium will be described.

[0064] The first direction lengths of the first print medium and the second print medium may be equal to or similar to each other. The meaning that the first direction lengths of the first print medium and the second print medium are similar to each other indicates that the first direction lengths of the first print medium and the second print medium fall within the same range among a plurality of different preset ranges. For example, the first direction lengths of the first print medium and the second print medium having similar lengths in the first direction may fall within the first width range among the first to fourth width ranges. The first width range may be, for example, a range including 148 mm, 182 mm, 210 mm, and 216 mm.

[0065] Furthermore, the second direction lengths of the first print medium and the second print medium may be different from each other. The meaning that the second direction lengths of the first print medium and the second print medium are different from each other indicates that the second direction lengths of the first print medium and the second print medium fall respectively within two different ranges among a plurality of preset ranges. For example, the second direction lengths of the first and second print media having different lengths in the second direction may fall respectively within the fifth length range and the second length range among the first to sixth length ranges. The fifth length range may include, for example, 257 mm. The second length range may include, for example, 279 mm.

SUBSTITUTE SHEET (RULE 26) [0066] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the first print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the first print medium.

[0067] In other words, the first lever part 212 may have a shape that deactivates the first switch 310 with respect to the first print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the first print medium.

[0068] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the first print medium. For example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the first print medium.

[0069] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the first print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the first print medium.

[0070] The other end of the second guide 220 may have a shape that activates the second switch 320 with respect to the first print medium. In addition, the other end of the second guide 220 may have a shape that deactivates the fourth switch 340 with respect to the first print medium. For example, the second guide 220 may have a shape that reaches the third length region X3 with respect to the first print medium.

[0071] In other words, the second lever part 222 may have a shape that activates the second switch 320 with respect to the first print medium. In addition, the second lever part 222 may have a shape that deactivates the fourth switch 340 with respect to the first print medium. For example, the second guide 220 may have a shape that reaches the third length region X3 with respect to the first print medium.

[0072] In addition, the other end of the second guide 220 may have a shape that activates the first switch 310 with respect to the first print medium. For example, the second guide 220 may have a shape that reaches the overlap region X2 with respect to the first print medium.

SUBSTITUTE SHEET (RULE 26) [0073] In other words, the second lever part 222 may have a shape that activates the first switch 310 with respect to the first print medium. For example, the second lever part 222 may have a shape that reaches the overlap region X2 with respect to the first print medium.

[0074] The other end of the second guide 220 may have a shape that reaches a region where the third length region X3 and the overlap region X2 overlap. Examples of the region where the third length region X3 and the overlap region X2 overlap will be described later.

[0075] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the second print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the second print medium.

[0076] In other words, the first lever part 212 may have a shape that deactivates the first switch 310 with respect to the second print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the second print medium.

[0077] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the second print medium. For example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the second print medium.

[0078] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the second print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the second print medium.

[0079] The other end of the second guide 220 may have a shape that activates the second switch 320 with respect to the second print medium. In addition, the other end of the second guide 220 may have a shape that deactivates the fourth switch 340 with respect to the second print medium. For example, the second guide 220 may have a shape that reaches the third length region X3 with respect to the second print medium.

[0080] In other words, the second lever part 222 may have a shape that activates the second switch 320 with respect to the second print medium. In

SUBSTITUTE SHEET (RULE 26) addition, the other end of the second guide 220 may have a shape that deactivates the fourth switch 340 with respect to the second print medium. For example, the second lever part 222 may have a shape that reaches the third length region X3 with respect to the second print medium.

[0081] In addition, the other end of the second guide 220 may have a shape that deactivates the first switch 310 with respect to the second print medium. For example, the second guide 220 may have a shape that does not reach the overlap region X2 with respect to the second print medium.

[0082] In other words, the second lever part 222 may have a shape that deactivates the first switch 310 with respect to the second print medium. For example, the second lever part 222 may have a shape that does not reach the overlap region X2 with respect to the second print medium.

[0083] Hereinafter, the third print medium will be described.

[0084] The first direction length of the third print medium may be equal to or similar to the first direction length of the first print medium or the second print medium. For example, the first direction length of the third print medium may fall within the first width range.

[0085] Furthermore, the second direction length of the third print medium may be different from the second direction length of each of the first print medium and the second print medium. For example, the second direction length of the third print medium may fall within the fourth length range. The fourth length range may include, for example, 210 mm and 216 mm.

[0086] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the third print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the third print medium.

[0087] In other words, the first lever part 212 may have a shape that deactivates the first switch 310 with respect to the third print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the third print medium.

[0088] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the third print medium. For

SUBSTITUTE SHEET (RULE 26) example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the third print medium.

[0089] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the third print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the third print medium.

[0090] The other end of the second guide 220 may have a shape that deactivates the second switch 320 with respect to the third print medium. Further, the other end of the second guide 220 may have a shape that deactivates the fourth switch 340 with respect to the third print medium. In addition, the other end of the second guide 220 may have a shape that deactivates the first switch 310 with respect to the third print medium. For example, the second guide 220 may have a shape that does not reach the first to fourth length regions X1 , X2, X3, and X4 with respect to the third print medium.

[0091] In other words, the second lever part 222 may have a shape that deactivates the second switch 320 with respect to the third print medium. In addition, the second lever part 222 may have a shape that deactivates the fourth switch 340 with respect to the third print medium. Moreover, the second lever part 222 may have a shape that deactivates the first switch 310 with respect to the third print medium. For example, the second lever part 222 may have a shape that does not reach the first to fourth length regions X1 , X2, X3, and X4 with respect to the third print medium.

[0092] Hereinafter, the fourth and the fifth print media will be described.

[0093] The first direction lengths of the fourth print medium and the fifth print medium may be equal to or similar to the first direction length of the first print medium or the second print medium. For example, the first direction lengths of the fourth print medium and the fifth print medium may fall within the first width range.

[0094] Furthermore, the second direction lengths of the fourth print medium and the fifth print medium may be different from the first direction lengths of the first print medium and the second print medium. Moreover, the second direction lengths of the fourth print medium and the fifth print medium may be

SUBSTITUTE SHEET (RULE 26) different from each other. For example, the second direction length of the fourth print medium may fall within the sixth length range, and the second direction length of the fifth print medium may fall within the first length range. The sixth length range may include, for example, 330 mm. The first length range may include, for example, 297 mm.

[0095] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the fourth print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the fourth print medium.

[0096] In other words, the first lever part 212 may have a shape that deactivates the first switch 310 with respect to the fourth print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the fourth print medium.

[0097] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the fourth print medium. For example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the fourth print medium.

[0098] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the fourth print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the fourth print medium.

[0099] The other end of the second guide 220 may have a shape that deactivates the second switch 320 with respect to the fourth print medium. In addition, the other end of the second guide 220 may have a shape that activates the fourth switch 340 with respect to the fourth print medium. For example, the second guide 220 may have a shape that reaches the first length region X1 with respect to the fourth print medium.

[00100] In other words, the second lever part 222 may have a shape that deactivates the second switch 320 with respect to the fourth print medium. Furthermore, the second lever part 222 may have a shape that activates the fourth switch 340 with respect to the fourth print medium. For example, the second lever part 222 may have a shape that reaches the first length region X1 with

SUBSTITUTE SHEET (RULE 26) respect to the fourth print medium.

[00101] In addition, the other end of the second guide 220 may have a shape that activates the first switch 310 with respect to the fourth print medium. For example, the second guide 220 may have a shape that reaches the overlap region X2 with respect to the fourth print medium.

[00102] In other words, the second lever part 222 may have a shape that activates the first switch 310 with respect to the fourth print medium. For example, the second lever part 222 may have a shape that reaches the overlap region X2 with respect to the fourth print medium.

[00103] The other end of the second guide 220 may have a shape that reaches a region where the first length region X1 and the overlap region X2 overlap. Examples of the region where the first length region X1 and the overlap region X2 overlap will be described later.

[00104] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the fifth print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the fifth print medium.

[00105] In other words, the first lever part 212 may have a shape that deactivates the first switch 310 with respect to the fifth print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the fifth print medium.

[00106] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the fifth print medium. For example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the fifth print medium.

[00107] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the fifth print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the fifth print medium.

[00108] The other end of the second guide 220 may have a shape that deactivates the second switch 320 with respect to the fifth print medium. In addition, the other end of the second guide 220 may have a shape that activates

SUBSTITUTE SHEET (RULE 26) the fourth switch 340 with respect to the fifth print medium. For example, the second guide 220 may have a shape that reaches the first length region X1 with respect to the fifth print medium.

[00109] In other words, the second lever part 222 may have a shape that deactivates the second switch 320 with respect to the fifth print medium. In addition, the second lever part 222 may have a shape that activates the fourth switch 340 with respect to the fifth print medium. For example, the second lever part 222 may have a shape that reaches the first length region X1 with respect to the fifth print medium.

[00110] In addition, the other end of the second guide 220 may have a shape that deactivates the first switch 310 with respect to the fifth print medium. For example, the second guide 220 may have a shape that does not reach the overlap region X2 with respect to the fifth print medium.

[00111] In other words, the second lever part 222 may have a shape that deactivates the first switch 310 with respect to the fifth print medium. For example, the second lever part 222 may have a shape that does not reach the overlap region X2 with respect to the fifth print medium.

[00112] Hereinafter, the sixth print medium will be described.

[00113] The first direction length of the sixth print medium may be equal to or similar to the first direction length of the fourth print medium or the fifth print medium. For example, the first direction length of the sixth print medium may fall within the first width range.

[00114] Furthermore, the second direction length of the sixth print medium may be different from the second direction lengths of the fourth print medium and the fifth print medium. For example, the second direction length of the sixth print medium may fall within the third length range. The third length range may include, for example, 353 mm and 356 mm.

[00115] The other end of the first guide 210 may have a shape that deactivates the first switch 310 with respect to the sixth print medium. For example, the other end of the first guide 210 may have a shape that does not reach the overlap region X2 with respect to the sixth print medium.

[00116] In other words, the first lever part 212 may have a shape that

SUBSTITUTE SHEET (RULE 26) deactivates the first switch 310 with respect to the sixth print medium. For example, the first lever part 212 may have a shape that does not reach the overlap region X2 with respect to the sixth print medium.

[00117] In addition, the other end of the first guide 210 may have a shape that activates the third switch 330 with respect to the sixth print medium. For example, the other end of the first guide 210 may have a shape that reaches the width region with respect to the sixth print medium.

[00118] In other words, the first lever part 212 may have a shape that activates the third switch 330 with respect to the sixth print medium. For example, the first lever part 212 may have a shape that reaches the width region with respect to the sixth print medium.

[00119] The other end of the second guide 220 may have a shape that activates the second switch 320 with respect to the sixth print medium. In addition, the other end of the second guide 220 may have a shape that activates the fourth switch 340 with respect to the sixth print medium. For example, the second guide 220 may have a shape that reaches the fourth length region X4 with respect to the sixth print medium.

[00120] In other words, the second lever part 222 may have a shape that activates the second switch 320 with respect to the sixth print medium. In addition, the second lever part 222 may have a shape that activates the fourth switch 340 with respect to the sixth print medium. For example, the second lever part 222 may have a shape that reaches the fourth length region X4 with respect to the sixth print medium.

[00121] In addition, the other end of the second guide 220 may have a shape that deactivates the first switch 310 with respect to the sixth print medium. For example, the second guide 220 may have a shape that does not reach the overlap region X2 with respect to the sixth print medium.

[00122] In other words, the second lever part 222 may have a shape that deactivates the first switch 310 with respect to the sixth print medium. For example, the second lever part 222 may have a shape that does not reach the overlap region X2 with respect to the sixth print medium.

[00123] Hereinafter, the overlapping of the overlap region X2, the first length

SUBSTITUTE SHEET (RULE 26) region X1 , and the third length region X3 will be described with reference to FIG. 6.

[00124] FIG. 6 is a schematic diagram illustrating relative positions of first to fourth length regions according to an example.

[00125] For example, FIG. 6 shows regions to which the second lever part 222 reaches while the right end of the second overlap member 222b is moved toward the right by the maximum movable distance X.

[00126] A portion of the overlap region X2 may overlap a portion of the first length region X1 , and another portion of the overlap region X2 may overlap a portion of the third length region X3. For example, based on the second guide 220 reaching a portion of the overlap region X2 overlapping a portion of the first length region X1 , the second guide 220 may activate the first switch 310 and the fourth switch 340. In addition, based on the second guide 220 reaching another portion of the overlap region X2 overlapping a portion of the third length region X3, the second guide 220 may activate the first switch 310 and the second switch 320.

[00127] In the various examples, the first guide 210 and the second guide 220 do not interfere with each other based on the first guide 210 and the second guide 220 being moved so that at least a portion of the first guide 210 and the second guide 220 may be positioned in the overlap region X2.

[00128] In addition, in the various examples, one switch can be activated by both the first guide 210 and the second guide 220, which makes it possible to reduce the number of sensors used for determining the type of print medium and to reduce the manufacturing cost of the image forming apparatus 1 .

[00129] While the present disclosure has been described with respect to various examples, the present disclosure is not limited thereto and should be construed as having the widest scope within the technical spirit disclosed in the present specification. The present disclosure may be implemented in a form that is not described in the examples of the present disclosure by combining or replacing elements of the various examples, which does not depart from the scope of the present disclosure. In addition, it is apparent that the disclosed examples may be changed or modified based on the present specification, and

SUBSTITUTE SHEET (RULE 26) thus, such changes or modifications fall within the scope of the present disclosure.

SUBSTITUTE SHEET (RULE 26)