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JP2021182050A |
To remarkably extend a service life of an image formation system.An image formation system comprises a plurality of stations 2A, B, C, D. Each station comprises: image carriers 40Y, M, C, K for forming toner images; development devices 2...
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JP2021181393A |
To provide metal oxide particles having p-type semiconductivity for forming a metal oxide film exhibiting high gas barrier properties.The metal oxide particles having p-type semiconductivity are provided in which a volume-based particle ...
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JP2021182083A |
To provide an electrophotographic photoreceptor that prevents variations in bright part potential after a long-term use.An electrophotographic photoreceptor has a support, an intermediate layer, and a photosensitive layer in this order. ...
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JP2021182084A |
To provide an electrophotographic photoreceptor that can provide a satisfactory image as an electrophotographic photoreceptor with no image defects, such as interference fringes, and can achieve high definition in an output image.An elec...
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JP6972805B2 |
To provide an image holding body that presses a pressing part obtained by bending a part of a ground plate against a substrate with a thickness of 0.4 mm and presses the other pressing parts obtained by bending the other parts of the gro...
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JP6971289B2 |
There are provided an electrophotographic photoreceptor which achieves excellent enduring characteristics and reduction in occurrence of image defects, and an image forming apparatus and an electrophotographic photoreceptor manufacturing...
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JP6971883B2 |
Disclosed herein is an electrophotographic photosensitive member in which leakage hardly occurs even in the case of using a layer containing metal oxide particles as an electrically conductive layer in the electrophotographic photosensit...
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JP6963406B2 |
An electrophotographic photosensitive member, wherein fluctuation in potential is suppressed, and the occurrence of black spots is suppressed even if the electrophotographic photosensitive member is repeatedly used for a long period of t...
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JP6965528B2 |
To obtain an image forming apparatus that prevents an attachment from accumulating on a surface of a latent image holding body including a single-layer photosensitive layer, compared with a case where, after transfer of a toner image, a ...
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JP6962835B2 |
To solve the problem in which shavings are caught between an end surface of a flange and a deep end of an engaging part accompanied by increase in a diameter of a photoreceptor, and attachment accuracy of the flange is affected.An electr...
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JP6958403B2 |
To provide an electrophotographic photoreceptor that achieves both a long life and high image quality, and an electrophotographic image forming apparatus.An electrophotographic photoreceptor has an undercoat layer, a charge generating la...
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JP2021173806A |
To provide an electrophotographic photoconductor drum that achieves both reduction in torque of the electrophotographic photoconductor drum during cleaning and improvement in transferability of an image.An electrophotographic photoconduc...
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JP2021170059A |
To provide an electrophotographic photoreceptor that is excellent in potential stability and has high strength, a method for manufacturing the same, and an image forming apparatus.An electrophotographic photoreceptor of the present inven...
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JP6955331B2 |
To provide an electrophotographic photoreceptor in which a surface layer has a domain structure of oil having a fluoropolyether structure in a cured resin matrix in its thickness direction that improves electric characteristics without i...
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JP6955333B2 |
To provide an electrophotographic photoreceptor that has excellent wear resistance and excellent electric characteristics, and can suppress image deletion for a long time.An electrophotographic photoreceptor has a surface layer that cont...
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JP6953694B2 |
To provide an electrophotographic photoreceptor excellent in wear resistance against a load in practical use and electrical characteristic.An electrophotographic photoreceptor includes a photosensitive layer on a conductive substrate, an...
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JP2021167923A |
To provide an image forming method using a toner for electrostatic charge image development and an electrophotographic photoreceptor, the image forming method in which the electrophotographic photoreceptor can maintain high durability wh...
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JP2021167927A |
To provide an electrophotographic photoreceptor that is excellent in prevention of image deletion.An electrophotographic photoreceptor has a conductive support, a photosensitive layer, and a protective layer. The protective layer contain...
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JP2021167928A |
To provide an electrophotographic photoreceptor that can maintain its electrification capability during repeated use.An electrophotographic photoreceptor has a support, a conductive layer, a photosensitive layer, and a protective layer i...
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JP2021165804A |
To provide an electrophotographic photoreceptor that has high wear resistance and scratch resistance and has excellent memory resistance, and an image forming apparatus.An electrophotographic photoreceptor is an electrophotographic photo...
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JP6946895B2 |
To provide an electrophotographic photoreceptor that prevents an increase in residual potential.An electrophotographic photoreceptor comprises: a conductive substrate; an undercoat layer that is provided on the conductive substrate, the ...
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JP6948269B2 |
The present invention provides a triphenylamine derivative represented by general formula (1). (In the formula, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 and R 15 independently represent a hyd...
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JP6949619B2 |
To provide an electrophotographic photoreceptor in which sensitivity under a low-humidity environment is high and further a reduction in sensitivity even after repeated use in the low-humidity environment or after being left intact for a...
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JP6950054B2 |
An electrophotographic photosensitive member includes a support and a photosensitive layer in this order. The photosensitive layer contains a chlorogallium phthalocyanine crystal represented by formula (1) in which at least one organic c...
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JP6949620B2 |
To provide: an electrophotographic photosensitive member which has satisfactory abrasion resistance and electrical characteristics and suppressed image smearing and image density unevenness; and an electrophotographic apparatus and a pro...
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JP6949545B2 |
An electrophotographic photosensitive member includes a support member, a charge generating layer containing a phthalocyanine pigment as a charge generating material, a charge transport layer containing a charge transporting material in ...
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JP6946845B2 |
The object of the present invention is to provide an electrophotographic photoreceptor which is excellent in memory resistance and abrasion resistance and which is less likely to cause image defects,a method for producing an electrophoto...
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JP6947310B2 |
The present invention provides, at a low cost: an electrophotographic photoreceptor that has sufficient solvent resistance and crack resistance when used in a liquid development system and that also has superior electrical characteristic...
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JP2021162800A |
To provide a process cartridge, in a cleaner-less system, which can prevent a variation in potential after use for a long period in a low temperature and low humidity environment.A process cartridge that is removably attached to a device...
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JP2021156989A |
To provide an electrophotographic photoreceptor that is excellent in durability including wear resistance and scratch resistance and can stably supply images with high image quality, and an electrophotographic image forming apparatus pro...
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JP6945792B2 |
To extend the life of a charger including a charging roller by shifting a contact position in a rotation axis direction with the use of a change with time.A toner image forming apparatus comprises: a bearing member 80 that rotatably supp...
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JP6946099B2 |
An electrophotographic photosensitive member includes a support, a charge generating layer containing a charge generation material, and a charge transporting layer containing a charge transport material in this order, the charge transpor...
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JP6945989B2 |
To provide a dip coating device, an electrophotographic photosensitive body and an image forming apparatus capable of suppressing film thickness irregularity of a coated film due to flow of wind caused by at least one side relative eleva...
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JP2021152607A |
To provide means that prevents the occurrence of dust dirt on and fogging of an image.An image carrier unit comprises: an image carrier having a photo sensitive layer that contains a binder resin, a first charge transport material, and a...
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JP6942973B2 |
An image forming apparatus provided with a transfer device includes a separator, a post-transfer-residual-quantity acquirer, and a controller. The transfer device transfers an image formed on an image carrier to a transfer medium. The se...
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JP2021144137A |
To provide an electrophotographic photoreceptor that improves toner cleaning performance and a method for manufacturing the same, and to provide an image forming apparatus including an electrophotographic photoreceptor that improves tone...
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JP6938329B2 |
To provide an image formation method which suppresses fogging, image deletion and reduction in transfer efficiency even when left under a high temperature/high environment.An image formation method uses: an electrophotographic photorecep...
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JP6938427B2 |
To provide a method capable of stably manufacturing an electrophotographic photoreceptor having a high print quality, the electrophotographic photoreceptor obtained by the same, and an image forming apparatus capable of preventing the oc...
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JP6935674B2 |
An electrophotographic photoreceptor includes a conductive support and a single-layer photosensitive layer. The conductive support has an outer peripheral surface with a maximum surface roughness height (Rmax) of about 4.0 μm or less, a...
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JP2021135398A |
To provide an electro-photographic photoreceptor excellent in fine line reproducibility and surface properties by suppressing the swell in an undercoat layer of electro-photographic photoreceptor, a process cartridge, and an electro-phot...
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JP2021135439A |
To provide an image forming method that can prevent rain drops generated in a normal temperature and normal humidity environment.An image forming method of the present invention is an image forming method performed through an electrophot...
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JP6929736B2 |
An electrophotographic photosensitive member with suppressed potential variation even in the case that a protective layer including a cured material of a composition having a polymerizable functional group is used is provided. An electro...
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JP2021124525A |
To provide an electrophotographic photoreceptor that has stable electrification performance through its life, prevents the occurrence of an image defect, such as scumming even if long-term repeated energization fatigue occurs, can mainta...
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JP2021124573A |
To provide an electrophotographic photoreceptor that is excellent in print resistance, has high mechanical strength, and has high sensitivity and extremely satisfactory electrical characteristics and a method for manufacturing the same, ...
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JP2021124670A |
To provide an electrophotographic photoreceptor that prevents the generation of black spots even after a long-term use in an electrification roller process and is excellent in durability, a method for manufacturing the same, and an elect...
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JP6926885B2 |
To provide an electrophotographic photoreceptor that improves adhesiveness between a conductive substrate and an undercoat layer while maintaining electrical characteristics.An electrophotographic photoreceptor 7A comprises: a conductive...
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JP6926458B2 |
An electrophotographic photoreceptor includes a conductive support in which (i) a recessed portion having an opening diameter of greater than 400 μm and (ii) a recessed portion having an opening diameter of from 100 μm to 400 μm and a...
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JP2021120725A |
To provide an electrophotographic photoreceptor which comprises a conductive support and a photosensitive layer provided on the conductive support, and is suppressed in image defects and deterioration in electrical properties.A surface l...
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JP6921651B2 |
An electrophotographic photosensitive member includes an electroconductive support member and a photosensitive layer. The uppermost layer of the electrophotographic photosensitive member defines a surface layer, and the surface layer con...
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JP6922587B2 |
To provide an electrophotographic photoreceptor that prevents the occurrence of an unintended color point in an image formed after repetition of image formation, while preventing an afterimage phenomenon in an image formed at a high proc...
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