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JP7362498B2 |
An electrophotographic photosensitive member that has an electroconductive support and a photosensitive layer on the electroconductive support, and reduces image failures. The surface layer of the electrophotographic photosensitive membe...
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JP2023144988A |
To provide an image forming apparatus that prevents wear of a photoreceptor.An image forming apparatus comprises: a photoreceptor that includes an inorganic surface layer containing the group 13 element and oxygen in this order; an elect...
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JP2023144987A |
To provide an image forming apparatus that prevents wear of an electrophotographic photoreceptor and prevents a reduction in image quality due to poor cleaning.An image forming apparatus comprises: an electrophotographic photoreceptor th...
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JP2023144995A |
To provide an electrophotographic photoreceptor that prevents the generation of color points.An electrophotographic photoreceptor has a conductive substrate, an undercoat layer provided on the conductive substrate, a charge generating la...
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JP2023144996A |
To provide an electrophotographic photoreceptor base material capable of suppressing generation of vertical streaks on a generated image.An electrophotographic photoreceptor base material provided herein has an amplitude of 0.22 mm or le...
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JP2023144994A |
To provide an image forming apparatus that is excellent in electrical characteristics and wear resistance of an inorganic protective layer in an electrophotographic photoreceptor.An image forming apparatus comprises: an electrophotograph...
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JP7358276B2 |
Provided are an electrophotographic apparatus and a process cartridge each capable of suppressing the occurrence of a black spot (white background contamination) in an output image under a low-temperature and low-humidity environment. Th...
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JP2023143214A |
To provide an image forming apparatus that achieves both reduction of wear of a cleaning blade and reduction of wear of an inorganic protective layer of an electrophotographic photoreceptor.An image forming apparatus is such that: the co...
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JP2023143015A |
To provide an image forming apparatus that prevents a deterioration in cleanability and the occurrence of filming due to a long-term use and can provide stable, highly reliable images, and an image forming method using the same.The above...
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JP2023142267A |
To provide a process cartridge which nicely suppresses appearance of fine color lines on obtained images.A process cartridge provided herein comprises a photoreceptor comprising a conductive base material, a photosensitive layer provided...
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JP2023142264A |
To provide an electrophotographic photoreceptor that prevents an increase in residual potential.An electrophotographic photoreceptor comprises: a substrate; a photosensitive layer that is provided on the substrate; and a protective layer...
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JP2023141321A |
To provide an electrophotographic photoreceptor that is excellent in fine line reproducibility and prevents the occurrence of positive ghost.An electrophotographic photoreceptor comprises: a conductive substrate; an undercoat layer provi...
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JP2023141320A |
To obtain a coating apparatus which suppresses the occurrence of foreign matter defects of a coating film on an outer peripheral surface of a cylindrical body and suppresses the occurrence of coating unevenness of the coating film on the...
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JP7353824B2 |
An electrophotographic photosensitive member, including a cylindrical support, a charge generating layer formed on the cylindrical support, and a charge transport layer formed on the charge generating layer, in which in the charge genera...
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JP2023136995A |
To provide an electro-photographic photoreceptor which generates less point-like image defects due to cracking.The electro-photographic photoreceptor includes: a conductive base material; an underlying layer on the conductive base materi...
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JP7353155B2 |
To provide an electro-photographic photoreceptor having mechanical durability and dew condensation recovery performance.In an electro-photographic photoreceptor having a support body and a photosensitive layer, or having the support body...
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JP7352455B2 |
To provide an electrophotographic photoreceptor with good wear resistance and electrical properties, a process cartridge having the same, and an electrophotographic device.An electrophotographic photoreceptor provided herein comprises a ...
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JP7352456B2 |
To provide an electrophotographic photoreceptor with a single-layered photosensitive layer, which offers superior wear resistance and good electrical properties.An electrophotographic photoreceptor provided herein comprises a support bod...
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JP2023134395A |
To provide an electrophotographic photoreceptor having a photosensitive layer that is less likely to be peeled off and excellent in wear resistance of the photosensitive layer.An electrophotographic photoreceptor comprises a conductive s...
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JP2023134210A |
To provide a process cartridge that has a long service life and prevents an increase in driving torque during repeated high-speed use.A process cartridge has an electrophotographic photoreceptor, toner, and a developing member. The elect...
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JP2023134222A |
To provide a process cartridge that improves transfer properties during repeated use in a high temperature and high humidity environment.A process cartridge is removably attached to a main body of an electrophotographic device. The proce...
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JP2023134227A |
To provide a process cartridge that can prevent the generation of a banding image and form a high-quality electrophotographic image.A process cartridge is provided which has an electrophotographic photoreceptor, toner, and a developing m...
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JP7351131B2 |
To provide an electrophotographic photoreceptor and an electrophotographic image forming apparatus that can improve scratch resistance and prevent image blur and point defects.An electrophotographic photoreceptor of the present invention...
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JP7350638B2 |
An image forming apparatus in which no image smearing occurs even under high-temperature and high-humidity conditions while durability and low-temperature fixability are maintained. The image forming apparatus comprises: an electrophotog...
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JP7350639B2 |
An image forming apparatus including an electrophotographic photosensitive member having a support and a photosensitive layer, a charging unit that forms an electrostatic image on an outer surface of the electrophotographic photosensitiv...
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JP7349889B2 |
The invention provides an external additive used in a toner of an image forming apparatus, a toner using the external additive, and an image forming apparatus using the toner, wherein the external additive can stably form an image with e...
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JP2023131675A |
To provide an electrophotographic device that can control a charging potential of an electrophotographic photoreceptor during image formation with high accuracy in a short time.An electrophotographic device has: an electrophotographic ph...
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JP2023133275A |
To provide an electrophotographic photoreceptor that can maintain low wear properties and prevent filming.An electrophotographic photoreceptor comprises a laminated photosensitive layer having a conductive support, a charge generating la...
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JP2023132992A |
To provide an electrophotographic photoreceptor support body which enables production of an electrophotographic photoreceptor capable of forming an image with suppressed color unevenness.An electrophotographic photoreceptor support body ...
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JP2023130296A |
To provide an electrophotographic photoreceptor that reduces the generation of ghost and color points on an image.An electrophotographic photoreceptor comprises a conductive substrate, an undercoat layer, and a laminated photosensitive l...
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JP7346974B2 |
An electrophotographic photoconductor includes a conductive substrate; and a photosensitive layer provided on the conductive substrate and containing a charge generation material, a hole transport material, a first electron transport mat...
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JP7347055B2 |
An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft pol...
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JP7347049B2 |
An image forming apparatus includes an image holding member including a conductive substrate, a photosensitive layer, and a protection layer; a charging unit; an electrostatic image forming unit; a developing unit that includes an electr...
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JP2023130151A |
To provide an electrophotographic photoreceptor that is excellent in electrification characteristics and electron transport properties.An electrophotographic photoreceptor has an undercoat layer and a photosensitive layer on a conductive...
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JP7346243B2 |
There is provided an electrophotographic photosensitive member capable of suppressing the environmental fluctuation in repeated use. A protective layer of the electrophotographic photosensitive member contains a polymer of a composition ...
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JP7338402B2 |
To provide an electrophotographic photoreceptor that is excellent in wear resistance and light resistance against white light.A photosensitive layer included in an electrophotographic photoreceptor includes a charge generating layer and ...
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JP7337722B2 |
An electrophotographic photosensitive member having a support and a photosensitive layer on the support, wherein the electrophotographic photosensitive member comprises a surface layer comprising a polymerization product of a composition...
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JP7337649B2 |
A process cartridge which allows any spot and stripe as image defects to be suppressed is provided. A process cartridge, in which an electroconductive layer of a charging member has a matrix including a first rubber, and domains disperse...
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JP7337721B2 |
An electrophotographic photosensitive member, which is suppressed in occurrence of fogging and is excellent in abrasion resistance. In the electrophotographic photosensitive member, an outermost surface layer of the electrophotographic p...
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JP7337651B2 |
The process cartridge includes an electrophotographic photosensitive member having a first support and a photosensitive layer; and a charging member. In the photosensitive member when an electric current is measured which flows when a vo...
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JP7337652B2 |
There is provided a process cartridge detachably attachable to a main body of an electrophotographic apparatus, the process cartridge including an electrophotographic photosensitive member and a charging member, wherein an outer surface ...
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JP7337650B2 |
There is provided a process cartridge detachably attachable to a main body of an electrophotographic apparatus, the process cartridge including: an electrophotographic photosensitive member and a charging member, in which when average lo...
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JP2023121554A |
To provide an electrophotographic photoreceptor that is excellent in electrical characteristics and wear resistance.An electrophotographic photoreceptor comprises: a conductive substrate; and a laminated photosensitive layer having a cha...
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JP7336355B2 |
To provide an electrophotographic photoreceptor which offers high potential stability and suppresses generation of image unevenness during repeated use.An electrophotographic photoreceptor is provided, comprising a support body and a pho...
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JP2023121553A |
To provide an image forming unit that prevents wear of a photoreceptor.An image forming unit comprises a photoreceptor, and an electrifying member that is in contact with a surface of the photoreceptor to electrify the photoreceptor. The...
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JP2023120986A |
To provide an electrophotographic photoreceptor that prevents a long-term fluctuations in wear resistance of a surface protective layer.An electrophotographic photoreceptor comprises: a conductive substrate that has a wall thickness of 3...
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JP2023117809A |
To provide an electrophotographic photoreceptor which features superior dispersibility of fluorine atom-containing resin particles, durability, and ghost image suppression.An electrophotographic photoreceptor is provided, comprising a su...
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JP2023117807A |
To provide an electrophotographic photoreceptor comprising a surface layer that features superior dispersibility of fluorine atom-containing resin particles and suppresses ghost images.An electrophotographic photoreceptor is provided, co...
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JP2023117822A |
To provide an electrophotographic photoreceptor comprising a surface layer that features superior dispersibility of fluorine atom-containing resin particles and suppressed electric potential variations associated with repetitive use in a...
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JP2023117821A |
To provide an electrophotographic photoreceptor comprising a surface layer that features superior dispersion uniformity of fluorine atom-containing resin particles and suppressed electric potential variations associated with repetitive u...
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