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JP2019061152A |
To provide an image forming unit that can prevent a streak-like defect in an image even when an impact is applied to the unit from the outside.An image forming unit comprises: an image holding body; and a charging member that is arranged...
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JP2019060909A |
To provide an electrophotographic photoreceptor that reduces a difference in density of an image in the axial direction.An electrophotographic photoreceptor comprises: a conductive substrate 4; a charge generating layer 2; and a charge t...
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JP2019061146A |
To provide an electrophotographic photoreceptor that prevents wear of a charge transport layer being an outermost surface layer and prevents the occurrence of cracks as well.An electrophotographic photoreceptor comprises: a conductive su...
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JP2019061094A |
To provide an image forming apparatus that prevents the occurrence of filming.An image forming apparatus comprises: an electrophotographic photoreceptor that includes a photosensitive layer and a surface protective layer in this order on...
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JP2019061076A |
To provide a photoreceptor conveyance tool capable of reducing conveyance cost compared with the case of supporting a flange portion of a photoreceptor with cardboard.A photoreceptor conveyance tool includes a plate body and a support sh...
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JP6500996B2 |
This electrophotographic photosensitive body is provided with a conductive body and a photosensitive layer. The photosensitive layer contains a charge generating agent, a charge transporting agent and a binder resin. The binder resin con...
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JP6500840B2 |
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JP6500462B2 |
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JPWO2017204339A1 |
A copolymerized polycarbonate resin represented by the following general formula (1) and a copolymerized polycarbonate resin containing a repeating unit represented by the following general formula (2) and represented by the general form...
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JP2019056788A |
To improve performance to remove corona products attached to the surface of an image holding body having a surface protective layer, compared with a case where a retention space is not provided at a contact part of a cleaning blade and t...
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JP2019056131A |
To provide a method of efficiently performing cleaning processing on the inside of a deposition film formation apparatus after formation of a deposition film.A deposition film forming method comprises repeatedly performing a deposition f...
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JP2019056753A |
To provide an electrophotographic photoreceptor that has improved thin-line reproducibility.An electrophotographic photoreceptor comprises: a conductive substrate; and a single-layer photosensitive layer that is provided on the conductiv...
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JP6497092B2 |
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JP2019053334A |
To provide a single layer type electrophotographic photoreceptor for positive charging which prevents initial electrification failure even when a hole transport material is used which facilitates synthesis and is inexpensive, has a molec...
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JP2019053224A |
To provide an image forming apparatus that reduces wear over time of an image holding body that has a surface protective layer containing oxygen and a boron group element as constituent elements, compared with a case where a toner does n...
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JP2019053142A |
To reduce the occurrence of a non-uniform potential characteristic uniformity of an electrophotographic photoreceptor due to the influence of contamination during the formation of a deposition film.A method for producing an electrophotog...
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JP6493527B2 |
A method of producing an electrophotographic photoreceptor composed of a photosensitive layer provided on a conductive substrate, includes, in the formation of an outermost layer, controlling slope k of a straight line obtained by plotti...
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JP6492843B2 |
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JP6493288B2 |
The present invention provides an electrophotographic photosensitive member. The electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer contains at least a charge ge...
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JP2019049626A |
To obtain an image holding body that has a conductive member in contact with the inner peripheral surface of a base material having a thickness of 0.4 mm, and can prevent a reduction in circularity of the base material compared with a co...
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JP6489432B2 |
wherein Smr represents an areal ratio of projecting parts; Sk represents a reference area; and a Scut represents a cross-sectional area obtained by cutting a three-dimensional curved surface obtained from the reference area with an avera...
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JP6489824B2 |
An electrophotographic photosensitive member includes a hole transporting layer containing a polyester resin having a structural unit expressed by formula (1) as a hole transporting substance.
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JP6485134B2 |
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JP6485135B2 |
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JP6485161B2 |
An electrophotographic photoreceptor includes a conductive substrate and a single-layer photosensitive layer which is provided on the conductive substrate and contains a binder resin, at least one charge generating material selected from...
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JP6486241B2 |
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JP2019040157A |
To obtain an image holding body that is configured such that a pressing part is pressed against an inner peripheral surface of a substrate having a thickness of 0.4 mm, and can adjust the circularity of an outer peripheral surface of the...
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JP6481650B2 |
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JP6481454B2 |
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JP6481657B2 |
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JP6481324B2 |
A photoconductor is provided. The photoconductor includes an electroconductive substrate; an intermediate layer located overlying the electroconductive substrate; and a photosensitive layer located overlying the intermediate layer. The i...
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JPWO2018154739A1 |
An electrophotographic photosensitive member that does not generate minute black spots or color spots during initial printing in a high-temperature and high-humidity environment and can obtain stable high image quality in all environment...
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JP2019035845A |
To provide an electrophotographic photoreceptor with potential variation suppressed before and after continuous image output, and a process cartridge and an electrophotographic device having the electrophotographic photoreceptor.An elect...
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JP2019035844A |
To provide an electrophotographic photoreceptor with potential variation suppressed before and after continuous image output, and a process cartridge and an electrophotographic device having the electrophotographic photoreceptor.An elect...
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JP6478750B2 |
Provided is an electrophotographic photosensitive member, including a photosensitive layer that includes a phthalocyanine crystal in which a compound represented by the following formula (1) is contained: in the formula (1), X represents...
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JP6478021B2 |
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JP6478769B2 |
An electrophotographic photosensitive member capable of outputting an image with suppressed positive ghosting, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are pro...
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JP6477458B2 |
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JP6476553B2 |
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JP6478739B2 |
Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer hav...
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JP6476682B2 |
Provided is an electron transport material represented by formula (1): wherein X represents an oxygen atom or ═C(CN)2; R1, R2, R3, R4, R5, R6, and R7 each independently represent a hydrogen atom, a halogen atom, a linear or branched al...
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JP6478673B2 |
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JP6476688B2 |
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JP6477325B2 |
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JP6476893B2 |
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JP6477568B2 |
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JP2019032361A |
To provide an electrophotographic photoreceptor that is excellent in sensitivity characteristics.An electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer...
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JP2019032358A |
To provide an electrophotographic photoreceptor that can improve sensitivity characteristics.An electrophotographic photoreceptor 1 comprises a conductive substrate 2 and a photosensitive layer 3, and the photosensitive layer 3 is a sing...
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JP2019032359A |
To provide an electrophotographic photoreceptor that can improve sensitivity characteristics.An electrophotographic photoreceptor 1 comprises a conductive substrate 2 and a photosensitive layer 3, and the photosensitive layer 3 is a sing...
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JP2019032360A |
To provide an electrophotographic photoreceptor that is excellent in sensitivity characteristics.An electrophotographic photoreceptor comprises a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer...
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