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JP7423311B2 |
An electrophotographic photosensitive member includes: a support, an undercoat layer, and a photosensitive layer in this order, wherein the undercoat layer comprises a polyamide resin, and titanium oxide particles having been subjected t...
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JP2024011918A |
An object of the present invention is to provide an electrophotographic photoreceptor in which point-like image defects are less likely to occur. An electrophotographic photoreceptor includes a conductive substrate, a laminated photosens...
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JP7419041B2 |
To provide an image forming apparatus that can prevent strong adhesion of talc to a photoreceptor with high durability to prevent image deletion through durable use.An image forming apparatus has electrifying means for electrifying an el...
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JP2024008713A |
An object of the present invention is to provide an electrophotographic photoreceptor in which point-like image defects are less likely to occur. [Solution] An electrophotographic photoreceptor includes a conductive substrate, an underco...
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JP7418121B2 |
To provide an electrophotographic photoreceptor which suppresses accumulation of charges due long-term repetitive use and suppresses fogging.An electrophotographic photoreceptor has a support, an undercoat layer formed on the support, a ...
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JP7417417B2 |
To provide an electrophotographic photoreceptor that has a single layer-type photosensitive layer having satisfactory wear resistance and a small residual potential, and to provide a process cartridge and an electrophotographic device ha...
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JP7415330B2 |
To provide an electrophotographic photoreceptor that is excellent in wear resistance.An electrophotographic photoreceptor 1 comprises: a conductive substrate 2; and a photosensitive layer 3. The photosensitive layer 3 is a single layer. ...
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JP7415468B2 |
To provide an image forming apparatus that prevents a streak-like image defect.An image forming apparatus comprises: a photoreceptor that has an outermost surface layer containing polytetrafluoroethylene particles and a dispersant having...
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JP2024006620A |
[Problem] When a cured layer obtained by curing a charge transporting compound having a radically polymerizable group is used as a protective layer, the rotational torque of a photoreceptor can be reduced, and the increase in rotational ...
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JP2024006328A |
[Problem] To provide an electrophotographic photoreceptor that can prevent transfer memory from occurring even when a cured film is heat-treated after curing when forming a protective layer, and can suppress deterioration in cleaning pro...
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JP2024006965A |
According to the present invention, it is possible to provide an electrophotographic photoreceptor that has improved injection charging properties, suppresses initial image deletion, and improves transfer properties. [Solution] An electr...
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JP2024006405A |
[Object] It is an object of the present invention to provide an image forming apparatus and an image forming method using the same, which can reduce filming on a photoreceptor and optimize film thinning, and provide stable image characte...
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JP7413123B2 |
Provided is an electrophotographic photosensitive member, which has high abrasion resistance and is resistant to being deeply flawed. Specifically, provided is an electrophotographic photosensitive member comprising a support and a surfa...
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JP7413115B2 |
A cylindrical electrophotographic photosensitive member having concave portions on a surface thereof includes a region A having concave portions at an end portion in an axial direction of the photosensitive member and a region B having c...
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JP7413054B2 |
The present disclosure provides an electrophotographic photosensitive member that suppresses electric potential fluctuations in repeated use. The electrophotographic photosensitive member includes a support, a photosensitive layer and a ...
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JP7409608B2 |
To provide a method of manufacturing an electrophotographic photoreceptor which has a charge transport layer having a more uniform film thickness.The present invention relates to a method of manufacturing an electrophotographic photorece...
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JP2024000488A |
An object of the present invention is to provide an electrophotographic photoreceptor that can suppress highlight image blurring under high temperature and high humidity conditions while maintaining high injection chargeability. [Solutio...
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JP2023183166A |
To provide an electrophotographic photoreceptor which offers stable sensitivity during repeated use.An electrophotographic photoreceptor is provided, comprising a support body, an undercoat layer, a charge generation layer, and a charge ...
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JP7406427B2 |
Disclosed is a cylindrical electrophotographic photosensitive member having a region A along an outer surface and a region B along the outer surface. In this electrophotographic photosensitive member, the region A is located on an end si...
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JP2023183162A |
To provide an electrophotographic photoreceptor that suppresses pattern memory.An electrophotographic photoreceptor is provided, comprising a support body, an undercoat layer formed on the support body, and a photosensitive layer formed ...
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JP7404981B2 |
To provide an electrophotographic photoreceptor, an electrophotographic image forming apparatus, and an electrophotographic image forming method that can achieve good cleanability, scratch resistance, and prevention of point defects for ...
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JP7400588B2 |
To provide a new photoreceptor that is related to an inverted layer positively charged photoreceptor and can improve electrical characteristics to a level at which it can be put into practical use.A photoreceptor has a hole neutralizatio...
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JP2023179249A |
To provide an electrophotographic photoreceptor that keeps on cleaning properties and wear resistance over a long period through a product life, and further can suppress a reversal of cleaning blades, and to provide an image formation de...
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JP2023177034A |
To provide a coating liquid for electro-photographic photoreceptor protective layer formation that contains a chain polymerizable compound, a filler and a solvent, and can compatibly have superior electric characteristics of an electro-p...
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JP7396206B2 |
To provide an electrophotographic photoreceptor that can improve durability, an image forming apparatus, and an image forming method.An electrophotographic photoreceptor has a conductive support and a photosensitive layer on the conducti...
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JP7395118B2 |
To provide an electrophotographic photoreceptor that has high sensitivity, and reduces a reduction in electrification characteristic and an increase in residual potential (reduction in sensitivity) due to repeated fatigue and variations ...
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JP7392299B2 |
A dispersant attached polytetrafluoroethylene particle on whose surface a dispersant having a fluorine atom is attached has a content of perfluorooctanoic acid of from 0 ppb to 25 ppb with respect to the polytetrafluoroethylene particle,...
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JP2023170538A |
To provide a photoreceptor that can obtain sufficiently stable electrical characteristics and image quality even through a high temperature and high humidity environment for a long period.A photoreceptor has an undercoat layer and a phot...
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JP2023170603A |
To provide an electrophotographic photoreceptor which has good initial electric properties, is free from chargeability deterioration thorough repetitive use, and offers good fogging resistance, and to provide an image forming device equi...
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JP7380044B2 |
To provide an electrophotographic photoreceptor that has high surface smoothness regardless of the type of fluorine-containing resin particles.An electrophotographic photoreceptor has a conductive substrate and a photosensitive layer pro...
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JP7380287B2 |
A photoelectric conversion element includes a support, a photoelectric conversion layer, an undercoat layer, and a surface layer; where the photoelectric conversion layer, the undercoat layer, and the surface layer are disposed on or abo...
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JP7379121B2 |
To provide an image forming method that prevents contamination of a member even when a toner having good low-temperature fixability is repeatedly used for a long period.An image forming method comprises: an electrifying step of electrify...
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JP2023164312A |
To provide an electrophotographic photoreceptor that can prevent a blur of dots forming an output image.There is provided an electrophotographic photoreceptor having a cylindrical support and a photosensitive layer. A surface of the supp...
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JP2023164050A |
To provide an electrophotographic photoreceptor comprising an undercoat layer that suppresses occurrence of cracks associated with long-term use, and to provide a process cartridge employing the electrophotographic photoreceptor and an e...
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JP2023164048A |
To provide an electrophotographic photoreceptor capable of minimizing density unevenness.A first layer contains a support material, binder resin, gallium phthalocyanine pigment, and perinone compound selected from a group consisting of c...
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JP2023164313A |
To provide an electrophotographic photoreceptor that can prevent a photosensitive layer from being peeled off from a support and prevent a blur of dots forming an output image even when it is used after storage in a low temperature or hi...
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JP2023164311A |
To provide an electrophotographic photoreceptor that prevents the occurrence of a defect in an output image when image formation is repeatedly performed in a high temperature and high humidity environment.An electrophotographic photorece...
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JP2023164042A |
To provide an electrophotographic photoreceptor which suppresses an increase in dark decay during long-term repeated use in a high-temperature high-humidity environment and contributes to formation of high-quality images, a process cartr...
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JP2023164310A |
To provide an electrophotographic photoreceptor that, when it is stored for a long period in a high temperature and high humidity environment, achieves both prevention of potential variation during continuous output and prevention of a r...
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JP2023164481A |
To provide an electrophotographic photoreceptor that has an outermost surface layer containing fluorine-containing resin particles excellent in electrification characteristics.An electrophotographic photoreceptor has a conductive substra...
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JP2023164052A |
To provide an electrophotographic photoreceptor that exhibits good cleanability for a long period and exhibits good stability of the potential of a bright part in an image forming process subsequent to a transfer step, and to provide a p...
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JP2023162657A |
To provide an image forming system and an image forming method that achieve both prevention of abrasion of an organic photoreceptor and reduction of attachment on the organic photoreceptor.An image forming system of the present invention...
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JP7375385B2 |
A photoconductive drum (1) includes a sleeve member (2) having a hollow cylindrical shape, a photosensitive layer (3), and a protective layer (4). The photosensitive layer (3) and the protective layer (4) are sequentially laminated on an...
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JP7375633B2 |
The undercoat layer contains metal particles and a polyamide resin. The metal particle has a core and a coat layer covering at least a part of the core. The core contains titanium oxide. The coat layer contains at least a metal oxide dif...
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JP2023161161A |
To reduce a change in image density in repeated printing.An electrophotographic photoreceptor includes: a charge transport material; a polycarbonate resin having a structural unit indicated by a formula (1) or a polyester resin having a ...
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JP2023158926A |
To provide a manufacturing method of a coated film which can suppress nonuniform film thickness due to not only a coating condition but also an environmental condition or the like after coating and at the time of drying.The present inven...
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JP7367416B2 |
To provide an electronic device that has a long life.An electronic device includes an organic compound layer, and the organic compound layer includes a cured product obtained by at least curing a compound represented by the following for...
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JP7367426B2 |
To provide an electrophotographic photoreceptor capable of forming an image excellent in abrasion resistance, white background contamination resistance and fine line reproducibility while maintaining high image quality, and also to provi...
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JP2023154689A |
To provide an electrophotographic photoreceptor that achieves both wear resistance in long-term use and an improvement in image quality, a method for manufacturing the same, and an image forming apparatus comprising the electrophotograph...
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JP7363160B2 |
To provide an image forming apparatus that can prevent the occurrence of uneven charging.An image forming apparatus comprises: an image carrier consisting of a conductive substrate and a single-layer photosensitive layer; and a charging ...
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