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JP6873776B2 |
To provide an electrophotographic photoreceptor which can reduce image defects and can offer images with less degraded sensitivity characteristics.The electrophotographic photoreceptor includes a supporting body and a photosensitive laye...
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JP6872115B2 |
A metallic ingot for impact pressing includes a contact surface of the metallic ingot to contact a male mold in impact pressing having a maximum height roughness Rz of 20 μm to 50 μm and an average length of a roughness curve element R...
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JP6874377B2 |
To provide, in an image forming apparatus including electrostatic latent image carriers each having a surface layer containing curable resin, means that can prevent crushing of low-temperature fixability toner used in the image forming a...
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JP2021071696A |
To provide an electrophotographic photoreceptor which offers superior wear resistance and high potential stability and is capable of preventing noise and cleaning failure.An electrophotographic photoreceptor provided herein comprises a s...
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JP2021071695A |
To provide a single-layered electrophotographic photoreceptor which exhibits good wear resistance and less variations in electrical properties during repeated use, and to provide a process cartridge having the same and an electrophotogra...
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JP2021071536A |
To provide means that prevents strong transfer history and afterimage after continuous printing is performed on a high-resistance medium with a narrow width.An image carrier unit has an image carrier having a photosensitive layer. When t...
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JP2021067887A |
To provide an electro-photographic photoreceptor capable of suppressing optical memory and excellent in durability, a manufacturing method thereof, an electro-photographic apparatus, and a process cartridge.The electro-photographic photo...
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JP2021067915A |
To provide a single-layered electro-photographic photoreceptor having an undercoat layer between the photosensitive layer and a support and contains a charge generating substance, charge transporter and silica particles in the photosensi...
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JP2021067932A |
To provide a process cartridge that prevents lateral running while maintaining a good potential variation.A process cartridge has an electrophotographic photoreceptor having a first support, an undermost layer, and a photosensitive layer...
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JP2021067781A |
To provide an electrophotographic photoreceptor that has high wear resistance and scratch resistance, is excellent in toner releasability, and can prevent the generation of an abnormal image due to poor cleaning for a long period, a meth...
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JP2021067739A |
To provide an electro-photographic photoreceptor excellent in wear resistance and satisfactory in electrical characteristics, a manufacturing method of the electro-photographic photoreceptor, a process cartridge having the electro-photog...
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JP6864252B2 |
To provide an electrophotographic photoreceptor that contains a binder resin having a specific structure in a photosensitive layer to have a good compatibility with a charge transport material and other resins, maintain satisfactory adhe...
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JP6862285B2 |
To provide a negatively charged electrophotographic photoreceptor capable of improving sensitivity while reducing ghost image and image density unevenness represented by optical memory.In a negative charging electrophotographic photorece...
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JP6859734B2 |
wherein the content of α-chloronaphthalene in hydroxygallium phthalocyanine pigment in the charge generation layer is in a range of 0 ng/cm2 to 0.1 ng/cm2, the charge transport layer contains a non-halogen organic solvent having a boili...
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JP6859968B2 |
To provide an electrophotographic photoreceptor that is excellent in sensitivity and wear resistance and can prevent transfer memory.An electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer. The ph...
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JP6860423B2 |
To provide an electrophotographic photoreceptor with high sensitivity and with suppressed leakage, and also to provide a process cartridge and an electrophotographic apparatus including the electrophotographic photoreceptor.The electroph...
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JP2021056403A |
To satisfy both of maintaining the ability to clean a-Si electro-photographic photoreceptors for long-term use and withstand voltage performance when a voltage of opposite polarity to the charging polarity of a-Si electro-photographic ph...
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JP2021056348A |
To provide an electrophotographic photoreceptor with a superior sensitivity property.An electrophotographic photoreceptor is provided, comprising a conductive base material and a photosensitive layer consisting of a single layer. The pho...
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JP6855310B2 |
To provide an electrophotographic photoreceptor that has high durability and is highly effective in suppressing a photo memory.An electrophotographic photoreceptor has a surface layer that contains a charge transport material and a polye...
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JP6855314B2 |
To provide an electrophotographic device capable of preventing occurrence of image density unevenness resulting from scratch marks on an electrophotographic photoreceptor surface.An electrophotographic device comprises a toner having ton...
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JP6855849B2 |
To provide an electrophotographic photoreceptor suppressing reduction in density and an adhesion phenomenon of a toner in a non-image part (fogging) occurring in long-term use.The electrophotographic photoreceptor has a charge generating...
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JP2021051147A |
To provide an electrophotographic photoreceptor that is excellent in charge maintainability.An electrophotographic photoreceptor has a conductive substrate and a photosensitive layer provided on the conductive substrate. An outermost sur...
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JP6851749B2 |
To provide a heating method to prevent such problems that when a conductive auxiliary substrate is set at an end of a member to be heated so as to suppress an edge effect induced at an end of the member to be heated in a process of induc...
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JP6850201B2 |
To provide an electrophotographic photoreceptor improved both in loss of density of the output image at an initial stage of repeated use and transferability of the toner after repeated use.A electrophotographic photoreceptor has a surfac...
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JP6850205B2 |
Provided is an electrophotographic photosensitive member capable of achieving both high leak resistance and reduction in variations in dark part potential and bright part potential due to repeated use even when CB is used for an electric...
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JP2021047287A |
To provide an electrophotographic photoreceptor and an image formation apparatus which can obtain a high quality output image over a long period by suppressing the uneven wear of a photoreceptor.In an electrophotographic photoreceptor wh...
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JP6849068B2 |
A compound is represented by general formula (1). In general formula (1), R1 and R2 each represent, independently of one another, a hydrogen atom, a methyl group, or an ethyl group, and a sum of the number of carbon atoms of the chemical...
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JP2021043358A |
To provide an image forming apparatus that can prevent high humidity deletion while achieving power saving, and can reduce unevenness in sensitivity of a photoreceptor.An image forming apparatus has a cylindrical photoreceptor 201, a hea...
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JP2021043417A |
To provide an electro-photographic photoreceptor capable of suppressing the occurrence of image flow even after long-term use.In the electro-photographic photoreceptor that has a support medium, a photosensitive layer, and a protective l...
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JP2021043269A |
To provide an electrophotographic photoreceptor that can prevent the occurrence of an image quality defect including black dots in a conventional image forming method excellent in image reproducibility when performing exposure with near ...
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JP6843654B2 |
To provide an electrophotographic apparatus in which the deterioration of electrical properties in repetitive use is suppressed even in the case where an electrophotographic photosensitive member absorbs moisture under a high-temperature...
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JP6842992B2 |
The present invention relates to an electrophotographic photosensitive member in which a surface layer contains a polymer of a hole transport material having a polymerizable functional group, and the hole transport material has a specifi...
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JP6842315B2 |
To provide an immersion coating method, immersion coating equipment, an electrophotographic photoreceptor and an image forming apparatus capable of reducing inconvenience of coating irregularity of coating liquid between respective coate...
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JP6842984B2 |
To provide a surface processing method of a cylindrical electrophotographic photoreceptor capable of securing durability of a component to be used and effectively suppressing a manufacturing cost when forming a rugged shape on a surface ...
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JP2021039196A |
To prevent wear of a photoreceptor due to discharge in a non-contact charging device.An imaging system includes: a photoreceptor 40 including a surface to form a static latent image; a non-contact charging device 41 for charging the surf...
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JP2021038300A |
To provide a powder dispersion including powder of a predetermined hot-melt polymer and a charge-transporting aromatic compound with high dispersibility, and to provide a laminate having a charge transportation layer with excellent charg...
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JP6839492B2 |
To provide a quality determination method of a division object capable of efficiently determining quality of a division object.The invention relates to a quality determination method of a division object for dividing a workpiece which ha...
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JP6840967B2 |
To provide an electrophotographic photoreceptor that reduces the occurrence of an afterimage phenomenon occurring due to remaining of a history of a previous image.An image forming apparatus 100 comprises: an electrophotographic photorec...
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JP6838666B2 |
A photoconductor for electrophotography includes a base member; an anodic oxide coating provided on the base member and having a film thickness of 2 to 10 μm; an interlayer provided on the anodic oxide coating and containing a vinyl chl...
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JP6838324B2 |
An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer disposed on the conductive substrate and containing a binder resin, metal oxide particles, and an electron-accepting compound having an anthraquinon...
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JP2021033211A |
To provide means for suppressing occurrence of scattering contamination of an image.An image carrier unit has an image carrier having a photosensitive layer containing a binder resin and at least one or more charge transport materials, a...
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JP2021033143A |
To provide an image forming device capable of better contributing to environmental protection by reducing the heater length and further reducing image defects by suppressing the high-humidity flow.An image forming device comprising heati...
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JP6835103B2 |
This electrophotographic photosensitive body (1) is provided with a conductive substrate (2) and a photosensitive layer (3). The photosensitive layer (3) is a single layer type photosensitive layer. The photosensitive layer (3) contains ...
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JP6834447B2 |
A conductive support is formed of a bottomless hollow cylindrical member being made of metal and having a thickness t of equal to or less than 0.5 mm, the conductive support including: a chamfer portion on an outer peripheral surface sid...
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JP6834734B2 |
To provide an image formation method that has an excellent cleaning property, and can form an image of high definition even when a low coverage image is continuously output.An image formation method according to the present invention has...
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JP6833549B2 |
An electrophotographic photosensitive member including a surface layer containing a charge generating material and a polyester resin is provided. The polyester resin contains a structure having a 12- or higher-membered cycloalkylene group.
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JP6834539B2 |
To provide a manufacturing method of polycarbonate excellent in sensitivity and exposure potential as for an electrophotographic photoreceptor.In a manufacturing method of polycarbonate for electrophotographic photoreceptor having an oli...
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JP6833343B2 |
An electrophotographic photosensitive member includes a support member, an undercoat layer, and a photosensitive layer adjacent to the undercoat layer in this order, wherein the undercoat layer contains a polymerized product of a composi...
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JP2021026030A |
To provide an electrophotographic photosensitive member which reduces a potential fluctuation, increases image reproducibility under a low humidity environment, and suppresses image deletion under a high temperature and high humidity env...
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JP2021021752A |
To provide, in the present invention, an image forming apparatus that can prevent the occurrence of a ghost image and uneven charging.An image forming apparatus of the present invention comprises: an image carrier; and a charging roller ...
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