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JP6702809B2 |
To provide an electrophotographic photoreceptor excellent in potential variation suppressing effect when images are repeatedly formed in a high-temperature and high-humidity environment, and a method for manufacturing the same.An electro...
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JP6702500B2 |
This electrophotographic photosensitive body (100) is provided with a conductive substrate (101) and a single photosensitive layer (102). The photosensitive layer (102) contains at least a charge generating agent and a compound represent...
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JP6704739B2 |
An electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus wherein a streak-like image defect otherwise occurring in output in a low printing mode performed under a H/H environment can be reduc...
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JP6702844B2 |
Provided are an electrophotographic photosensitive member capable of satisfying abrasion resistance and electrical properties and suppressing image deletion, and an electrophotographic apparatus and a process cartridge having the electro...
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JP2020079915A |
To provide an electrophotographic photoreceptor that is excellent in sensitivity and wear resistance and can prevent LSU light reflection stripes.An electrophotographic photoreceptor comprises: a conductive substrate; and a photosensitiv...
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JP2020079902A |
To provide an image formation device that can prevent generation of an image deletion by controlling isolation of an external additive even with a structure that maintains durability of a photoreceptor.An image formation device comprises...
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JP6699264B2 |
To provide an electrophotographic photoreceptor that suppresses the occurrence of cracks in a photosensitive layer.There is provided an electrophotographic photoreceptor comprising: a conductive substrate; and a single-layer photosensiti...
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JP6700714B2 |
An electrophotographic photosensitive member includes, in the following order, a support member, an undercoat layer adjacent to the support member, and a photosensitive layer adjacent to the undercoat layer. The undercoat layer contains ...
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JP6699248B2 |
To provide an electrophotographic photoreceptor that has suppressed the generation of cracks in a photosensitive layer.There is provided an electrophotographic photoreceptor that comprises: a conductive substrate; and a single-layer phot...
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JP6699259B2 |
A method for producing a metal cylinder includes preparing a metal slug having a surface adjusted so that the crystal grain diameter at a depth of 10 μm from the surface is smaller than that at a depth of 100 μm from the surface, and t...
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JP6700833B2 |
To provide an electrophotographic photoreceptor with a high level of an antifogging effect.An electrophotographic photoreceptor has a support medium and a charge transport layer including a charge transport material in this order. The ch...
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JP6700832B2 |
To provide an electrophotographic photoreceptor with a high level of an antifogging effect.An electrophotographic photoreceptor has a support medium and a charge transport layer including a charge transport material in this order. The ch...
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JP6696965B2 |
A polycarbonate resin characterized by being represented by the following general formula (a).
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JP6693462B2 |
An electrostatic latent image developing toner includes toner particles. Each of the toner particles includes a toner mother particle and an external additive. The toner mother particle contains a binder resin. The external additive incl...
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JP2020071276A |
To solve the problem of an image forming device using a particularly high screen ruling, that temporal alteration or change in condition of an outermost surface of an electrophotographic photoreceptor having a surface layer made of a hyd...
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JP2020071378A |
To reduce unevenness in density of an image caused by uneven spread of developer.An image forming apparatus 1 comprises a developing device 40 that develops, in a developing area D, an electrostatic latent image formed on a photoreceptor...
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JP2020071478A |
To provide an electrophotographic photoreceptor that prevents variation in electrification potential after long-period repeated use under a low humidity environment.An electrophotographic photoreceptor has a support, an undercoat layer, ...
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JP2020067627A |
To provide a method capable of managing the thickness of a surface layer of an electrophotographic photoreceptor even which has an antireflection layer between the surface layer and a photoconductive layer.A method for managing the thick...
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JPWO2019180955A1 |
Provided are an electrophotographic photosensitive member capable of realizing a stable image without deterioration of image quality such as black spots due to a charge generating material, a manufacturing method thereof, and an electrop...
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JP2020067635A |
To provide an electrophotographic photoreceptor which combines high wear resistance with provision of a half-tone image of highlight having high reproducibility and good thin-line reproducibility.The electrophotographic photoreceptor is ...
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JP2020067598A |
To provide an electrophotographic photoreceptor excellent in suppression of the generation of photo memory, a process cartridge having the electrophotographic photoreceptor, and an electrophotographic apparatus.The electrophotographic ph...
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JP6690602B2 |
An electrophotographic photosensitive member (100) includes a conductive substrate (101) and a photosensitive layer (102) having a single-layer structure. The photosensitive layer contains a charge generating material, an electron transp...
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JP6690483B2 |
To suppress a reduction in image quality and reduce wear of a photoreceptor.The present image forming method is an image forming method of bringing a charging roller 212 into contact with a surface of a photoreceptor 211 to charge the ph...
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JP2020060675A |
To provide a positively-charged toner that can secure a charge amount suitable for image formation while preventing the occurrence of image deletion, and an image forming apparatus and an image forming method that can form an image with ...
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JP2020060748A |
To provide an electrophotographic photoreceptor which has high wear resistance, and which reduces accumulation of residual potential.An electrophotographic photoreceptor includes an undercoat layer, a layer containing a phthalocyanine pi...
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JP2020060739A |
To provide an image forming apparatus that prevents the occurrence of ghost and unevenness in density of an image.An image forming apparatus comprises electrophotographic photoreceptors that each have a conductive substrate, an under coa...
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JP6680064B2 |
Provided is a photoconductor including a conductive support, an intermediate layer containing metal oxide particles, and a photoconductive layer. The intermediate layer and the photoconductive layer are provided over the conductive suppo...
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JP6682249B2 |
To provide an inspection method in a manufacturing method of an electrophotographic photoreceptor, the method capable of accurately determining, as a defect, film thickness unevenness of a second intermediate layer of the electrophotogra...
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JP6680223B2 |
To provide a compound capable of enhancing electrical properties and oil crack resistance of an electrophotographic photoreceptor.There is provided a compound represented by the formula (1). Rand Rrepresent each independently a C1 to 6 a...
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JP6681229B2 |
To provide an electrophotographic photoreceptor capable of suppressing an image defect due to cracks in a photosensitive layer containing methoxybenzene, a process cartridge having the electrophotographic photoreceptor and an electrophot...
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JP6680257B2 |
To provide an electrophotographic photoreceptor that can improve voltage resistance and filming resistance while reducing the occurrence of exposure memory.An electrophotographic photoreceptor 1 comprises: a conductive substrate 2; and a...
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JP2020056909A |
To provide an electrophotographic photoreceptor that has high wear resistance and cleanability, and can obtain a high-quality image with substantially no occurrence of fogging even when used for a high-speed machine.In an electrophotogra...
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JP6677212B2 |
To provide an electrophotographic photoreceptor that prevents the occurrence of white spots in a formed image.An electrophotographic photoreceptor contains a monolayer of photosensitive layer, a charge generator, an electronic transporta...
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JP6677206B2 |
To provide a method for producing a polyarylate resin which reduces a residual amount of a quaternary ammonium salt as a polymerization catalyst and can enhance a molecular weight of the polyarylate resin.A method for producing a polyary...
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JP6677211B2 |
To provide an electrophotographic photoreceptor that comprises a photosensitive layer excellent in fogging resistance.An electrophotographic photoreceptor 1 comprises: a conductive substrate 2; and a photosensitive layer 3. The photosens...
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JP2020052163A |
To provide an image forming device which is configured to charge a photosensitive body with a single photosensitive layer by applying only a DC voltage to a charging roller and which is less susceptible to image density irregularity caus...
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JP2020052213A |
To provide a polytetrafluoroethylene particle with a dispersant adhered thereto, which offers superior dispersibility.A polytetrafluoroethylene particle with a dispersant adhered thereto is provided, comprising a polytetrafluoroethylene ...
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JP2020052371A |
To provide a cleaning method of a base for an electrophotographic photoreceptor that can remove an attachment (cutting oil, chip, and dust) on a surface of the base without significantly increasing a process related to base cleaning.A cl...
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JP2020050942A |
To provide a deposition film formation device that can form a high-quality deposition film having excellent uniformity and reduced in image failures, and can form a deposition film at low cost.A deposition film formation device satisfies...
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JP2020052165A |
To provide an image forming device which is configured to charge a photosensitive drum with a single photosensitive layer by applying only a DC voltage to a charging roller and which is capable of minimizing image density irregularity ca...
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JP2020052214A |
To provide a polytetrafluoroethylene particle with a dispersant adhered thereto, which offers superior chargeability.A polytetrafluoroethylene particle with a dispersant adhered thereto is provided, comprising a polytetrafluoroethylene p...
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JP2020052212A |
To provide an electrophotographic photoreceptor that prevents the occurrence of multi-color ghost.An electrophotographic photoreceptor has a conductive substrate in which the maximum height waviness of a waviness curve on a surface provi...
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JP6674270B2 |
To suppress an image failure caused by the surface degradation of an electrophotographic photoreceptor or scratches occurring thereon.A surface layer of an electrophotographic photoreceptor has a cured product of a composition comprising...
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JP2020046452A |
To provide a support body for immersion coating which offers superior coating film removability of an inner peripheral surface.A cylindrical support body for immersion coating is provided, having an inner peripheral surface having an ari...
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JP2020046618A |
To provide an electrophotographic photoreceptor support body which is used to produce an electrophotographic photoreceptor configured to allow an image with minimized streaky density unevenness to be formed thereon.An electrophotographic...
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JP6673284B2 |
To provide an image forming device that prevents the occurrence of fogging and maintains cleaning performance by a cleaning member as well.The image forming device comprises an image carrier 13, a developing device 11, and a cleaning mem...
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JP2020042129A |
To provide an electrophotographic photoreceptor that can prevent image memory and ghost while maintaining potential stability.An electrophotographic photoreceptor of the present invention has a conductive support that contains aluminum i...
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JPWO2018230100A1 |
The method for producing an electrophotographic photosensitive member includes a first step and a second step. In the first step, a conductive substrate material containing aluminum or an aluminum alloy is immersed in alkaline ionized wa...
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JP6669400B2 |
To provide an electrophotographic photosensitive member being excellent in abrasion resistance and having good electrical characteristics. The surface layer of the electrophotographic photosensitive member contains a copolymerized produc...
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JP6667099B2 |
wherein R1 to R8 independently represent a hydrogen atom, a nitro group, a cyano group, a halogen atom, a hydroxyl group, a saturated or an unsaturated aliphatic hydrocarbon group optionally having a substituent, an aromatic hydrocarbon ...
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