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JP7254596B2 |
An electrophotographic photosensitive member includes an undercoat layer, a charge generation layer, and a charge transport layer in this order. The undercoat layer contains a cured product of a composition containing an electron transpo...
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JP2023048960A |
To provide an electrophotographic photoreceptor which comprises a surface layer that features superior dispersibility of fluorine atom-containing resin particles and suppresses electric potential variations associated with repetitive use...
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JP2023048986A |
To prevent a variation in image density in an electrophotographic photoreceptor having an inorganic protective layer even when cracks are generated in the photoreceptor due to continuous formation of images.An electrophotographic photore...
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JP2023047285A |
To provide an electrophotographic photoreceptor that is excellent in electrical characteristics and less likely to cause the occurrence of peeling of a photosensitive layer.An electrophotographic photoreceptor comprises a conductive subs...
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JP7251289B2 |
To provide an electrophotographic photoreceptor that is excellent in wear resistance and can prevent passing of toner and the like at a contact part with a cleaning blade.A photosensitive layer 3 of an electrophotographic photoreceptor 1...
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JP2023044865A |
To provide an electrophotographic photoreceptor that has high wear resistance, can prevent a reduction in resolution in long-term use, and is excellent in image memory resistance, and an image forming apparatus.An electrophotographic pho...
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JP2023043647A |
To provide an electro-photographic photoreceptor which has the excellent printing durability and high mechanical strength and does not cause image density unevenness, an image formation apparatus having the same, a manufacturing method o...
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JP2023043029A |
To provide an electrophotographic photoreceptor excellent in suppression of the rise of residual potential.An electrophotographic photoreceptor includes a support, a photosensitive layer, and a surface layer. The surface layer includes a...
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JP2023043150A |
To provide an electrophotographic photoreceptor that has excellent chargeability, and is superior in fogging suppression.An electrophotographic photoreceptor has a surface protection layer, in which the surface protection layer is a poly...
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JP2023042423A |
To provide an electro-photographic device which improves the uniformity of electrification potentials and creates a high-quality image when a thick-film electro-photographic photoreceptor is used for a DC contact electrification method.A...
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JP2023042057A |
To provide an electrophotographic photoreceptor which can have excellent abrasion resistance and which hardly generates image stripes even when images are continuously output.An electrophotographic photoreceptor includes a support and a ...
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JP7243055B2 |
To suppress uneven thickness of a cylindrical body to be manufactured.A manufacturing method of a cylindrical body has: a first preparation step of preparing an impact press apparatus having a die with a recess in which a metal lump is l...
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JP7240124B2 |
To provide an electrophotographic photoreceptor capable of increasing the service life of a cleaning blade, a process cartridge, and an electrophotographic device.In a cylindrical electrophotographic photoreceptor having a plurality of r...
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JP2023034114A |
To provide an image forming method and the like with which, when a pressure-softened toner is used, cleaning performance can be maintained for a long period and an image defect can be prevented.In an image forming method of the present i...
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JP2023034482A |
To provide an electro-photographic photoreceptor which can have excellent wear resistance, and with which charger vaporized memory hardly occurs.Provided is an electro-photographic photoreceptor having a support medium and a photosensiti...
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JP2023034475A |
To provide an electro-photographic photoreceptor which can have excellent wear resistance, in which the surface potential hardly changes even when exposed to light.Provided is an electro-photographic photoreceptor having a support medium...
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JP2023028699A |
To provide a configuration that is light-weighted and can obtain a damping effect for a long period.A photoconductor drum 1Y comprises: a cylindrical substrate 21; a photosensitive layer 22 provided on an outer peripheral surface of the ...
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JP7232720B2 |
To provide an image forming apparatus that can prevent generation of a streak-like charging unevenness image caused by ununiformity in charging of an electrophotographic photoreceptor due to discharge abnormality, so as to form high-qual...
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JP7230522B2 |
To provide an electrophotographic photoreceptor that can improve sensitivity characteristics, improve charge stability, and prevent crystallization of a photosensitive layer.An electrophotographic photoreceptor comprises a conductive sub...
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JP7230818B2 |
The present invention relates to an electrophotographic photoreceptor including a conductive support and a photosensitive layer on the conductive support, and the photosensitive layer contains a polymer A containing a repeating structura...
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JP7230376B2 |
To provide means that improves wear resistance, image memory resistance, and cleaning property in an electrophotographic photoreceptor.An electrophotographic photoreceptor has at least a photosensitive layer and an outermost layer lamina...
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JP7229730B2 |
An image forming apparatus including: an image bearing member; a developing member to supply a developer to the image bearing member; and a cleaning member to clean a peripheral surface of the image bearing member in contact with the per...
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JP7225747B2 |
To provide an electrophotographic photoreceptor that prevents the occurrence of continuous print ghost.An electrophotographic photoreceptor has a conductive substrate, an undercoat layer, a charge generating layer, and a charge transport...
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JP7225784B2 |
To provide an electrophotographic photoreceptor that is excellent in charging maintaining property.An electrophotographic photoreceptor comprises: a conductive substrate; an under coat layer arranged on the conductive substrate, and a ph...
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JP7224910B2 |
To provide a process cartridge capable of suppressing the occurrence of image deletion.A process cartridge 7 is used in an image forming apparatus 100, and the process cartridge 7 includes: a rotatable image carrier 1 having a peripheral...
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JP2023024114A |
To provide an electrophotographic photoreceptor that can maintain an analog harmony in a rapid process and also can show the digital harmony characteristics of a low line number halftone or a high letter quality.The electrophotographic p...
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JP2023024116A |
To provide an electrophotographic photoreceptor that prevents the generation of memory and maintains high contrast through the durable use.An electrophotographic photoreceptor has a charge generating layer and a charge transport layer ha...
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JP2023024119A |
To provide an electrophotographic device that can control the potential of an exposure part of a photoreceptor with high accuracy in a short time.An electrophotographic device has: an electrophotographic photoreceptor; electrifying means...
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JP2023024120A |
To solve the problem in which: in using an LED array in an electrophotographic device as exposure means, when the quantity of light in a high light quantity area is used for image formation, electric charges remaining in a photoreceptor ...
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JP2023024117A |
To provide an electrophotographic photoreceptor that can increase the analog harmony characteristics by a high line number half tone while maintaining a high-quality digital harmony property.In a graph with a vertical axis I and a horizo...
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JP2023024115A |
To provide an electrophotographic photoreceptor that can suppress change of color of an image even when the electrophotographic photoreceptor is used repeatedly under a low-temperature and low-moisture environment involving a temperature...
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JP2023024108A |
To provide an electrophotographic photoreceptor that can attain a high sensitivity and the effect of suppressing a transfer memory phenomenon at a high level.The electrophotographic photoreceptor sequentially includes a supporting body, ...
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JP7222670B2 |
Provided is a cylindrical electrophotographic photosensitive member, including a concave/convex portion forming region in which at least one of concave portions and convex portions are formed on a surface of the electrophotographic photo...
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JP7222261B2 |
Provide is an electrophotographic image forming method containing: a charging step, an exposure step, a developing step, a transfer step and a cleaning step by using a photoreceptor, wherein the charging step has a charging device for ch...
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JP2023019706A |
To provide an electrophotographic photoreceptor that can satisfactorily form a photosensitive layer, and is excellent in fogging resistance.An electrophotographic photoreceptor includes a conductive substrate, and one or more photosensit...
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JP2023019707A |
To provide an electrophotographic photoreceptor that can satisfactorily form a photosensitive layer, and is excellent in sensitivity characteristic, filming resistance, and scratch resistance.A first photosensitive layer included in an e...
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JP7215577B2 |
This electrophotographic photoreceptor is provided with a conductive substrate and a photosensitive layer. The photosensitive layer is a monolayer. The photosensitive layer contains a charge generating agent, a hole transport agent, and ...
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JP7214559B2 |
Provided is an electrophotographic photosensitive member including a support and a surface layer, wherein the surface layer contains a copolymer of a composition containing a specific hole transporting compound and a specific compound.
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JP2023012667A |
To provide a developing device that can discharge excess developer, and can prevent discharge of developer in an amount more than necessary to stably maintain the amount of developer, and an image forming apparatus including the same.A d...
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JP2023012666A |
To provide an image forming apparatus that can prevent the occurrence of development leak or reduce leak traces to be generated in a two-component development system, and can maintain image quality.An image forming apparatus comprises: a...
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JP7211098B2 |
To provide an electrophotographic photoreceptor that can improve charge stability and prevent crystallization of a photosensitive layer.An electrophotographic photoreceptor 1 comprises a conductive substrate 2 and a photosensitive layer ...
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JP2023005118A |
To provide an electrophotographic device with which it is possible to extend the useful life of an electrophotographic photoreceptor while maintaining environmental stability.The above object is achieved by an electrophotographic device ...
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JP7207111B2 |
To provide an electrophotographic photoreceptor capable of preventing generation of image memory and image defects such as fogging for a prolonged period of time.An electrophotographic photoreceptor is provided, comprising at least an in...
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JP7206654B2 |
An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer on the conductive substrate; a charge generating layer on the undercoat layer; a charge transporting layer on the charge generating layer; and an in...
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JP7206937B2 |
To provide an electrophotographic photoreceptor, an electrophotographic image forming method, and an electrophotographic image forming apparatus including the electrophotographic photoreceptor that prevent occurrence of fogging, an image...
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JP2023005136A |
To provide an electrophotographic photoreceptor which suppresses damage to a photosensitive layer due to external light, has electrical properties that does not deteriorate during repetitive use, and allows for continuously obtaining goo...
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JP7208423B2 |
An electrophotographic photosensitive member includes a support member (201), an electroconductive layer (202), and a photosensitive layer in this order. The electroconductive layer contains a binder and particles. The particles have a c...
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JP7205115B2 |
To provide an electrophotographic photoreceptor that is used for a process cartridge having a developing process with a gap guarantee member, the electrophotographic photoreceptor capable of preventing the occurrence of image failure whi...
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JP7204419B2 |
The present disclosure provides an electrophotographic photosensitive member that can suppress a black spot and an exposure memory. The electrophotographic photosensitive member has a support, an undercoat layer and a photosensitive laye...
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JP7198688B2 |
A hybrid particle according to the present invention includes an inorganic core particle, an electron transport layer covering a surface of the inorganic core particle, and a light absorption layer covering the electron transport layer. ...
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