Title:
原稿読取装置及びこれを備えた画像形成装置
Document Type and Number:
Japanese Patent JP4103874
Kind Code:
B2
Abstract:
A document reading unit constituting an MFP reciprocates a reading glass holder in a direction of a vertical scanning at a low frequency (18 times per second) with use of a crank mechanism including a motor and gears. A stroke length of the reciprocating motion of a reading glass is 9 mm. This structure can make a line-shaped noise less noticeable, because a length of each portion of a line-shaped noise becomes 2.57 mm and a distance between adjacent portions of the line-shaped noise becomes 7.27 mm when a foreign object having a diameter of 100 mum adheres to the reading glass.
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Inventors:
Hiroshi Nishikawa
Application Number:
JP2004261143A
Publication Date:
June 18, 2008
Filing Date:
September 08, 2004
Export Citation:
Assignee:
Konica Minolta Business Technologies Co., Ltd.
International Classes:
H04N1/04; G03B27/62
Domestic Patent References:
| JP2000324312A | ||||
| JP2004112611A |
Attorney, Agent or Firm:
Shiro Nakajima