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7585604 |
Electrographic photosensitive member, process cartridge and electrophotographic apparatus
An object of the present invention is to provide an electrophotographic photosensitive member having high durability and hardly causing sensitivity decrease even if short wavelength light,...
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7582399 |
Imaging member having nano polymeric gel particles in various layers
Imaging members useful in electrostatographic apparatuses, including printers, copiers, other reproductive devices, and digital apparatuses. More particularly, imaging members having nano polymeric...
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7560207 |
Organic photoreceptor and electrophotographic image forming apparatus including the photoreceptor
An organic photoreceptor and an electrophotographic image forming apparatus including the organic photoreceptor are provided. The organic photoreceptor has the same advantage as a conventional...
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7556902 |
Aromatic polyester resin, and electrophotographic photoconductor and image forming apparatus using thereof
The object of the invention is to provide a novel aromatic polyester resin useful as a binder resin or charge transporting polymer for an organic photoconductor and an electrophotographic...
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7550240 |
Newtonian, ultrasonic-insensitive charge generating layer dispersion composition and a method for producing the composition
This invention relates to electrophotographic elements containing a layer formed from coating compositions containing a mixture of polymeric binders, including a polyvinyl butyral and a polyester...
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7507512 |
Particle-in-binder X-ray sensitive coating using polyimide binder
An X-ray sensitive coating ( 22 ) for a flat panel direct conversion X-ray detector for medical or industrial imaging. A composite particle-in-binder (PIB) material ( 22 ) may contain X-ray...
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7507509 |
Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the electrophotographic photoreceptor
An electrophotographic photoreceptor, including a crosslinked material including:
units obtained from a radical polymerizing monomer A having three or more radical polymerizing groups; a...
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7473507 |
Electrophotographic photoreceptor with polyester resin in photosensitive layer
An electrophotographic photoreceptor, which contains a polyester resin having a repeating structure comprising a bivalent phenol residue represented by the following formula (1) and an aromatic...
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7468231 |
Imaging members
An imaging member comprising a supporting substrate; a single layer photoreceptor for both charge generation and charge transport disposed on the supporting substrate, the single layer...
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7468230 |
Wet-developing electrophotographic photoconductor and wet-developing image
It is an object of the present invention to provide a wet-developing electrophotographic photoconductor which can be manufactured stably by making use of particular physical property indexes of an...
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7462431 |
Photoreceptors
Photogenerating layers of photoreceptors are provided utilizing a photogenerating component/resin dispersion formed in a low boiling point solvent.
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7452640 |
Electrophotographic photoconductor for liquid development, image forming apparatus having the same, and image forming method
An object of the present invention is to provide an electrophotographic photoconductor for liquid development, having high resistance to a carrier solvent for use in a liquid developing method and...
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7449271 |
Electrophotographic photoconductor and methods therefor
An electrophotographic photoconductor and method that seldom generate cracks even while recycling a photoconductor drum and peripheral members or in a liquid developing process, and thereby produce...
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7432028 |
Polymeric charge transport compositions
This invention relates to a novel organophotoreceptor that includes:
(a) a charge transport composition comprising molecules having the formula
where n is an average of a...
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7427460 |
Hydrazone-based charge transport materials having an ethylenically unsaturated group
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
...
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7416825 |
Single layer type electrophotographic photoconductor and image forming device
The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent...
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7384718 |
Charge generating composition and imaging member
A composition that finds particular utility in forming a charge generating layer of an imaging member includes at least one charge generating material, at least one polymer binder and at least one...
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7354685 |
Photoconductive imaging members
A photoconductive member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer comprised of a polymer with a low dielectric constant and a charge transport...
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7348113 |
Electrophotographic photoconductor comprising a polycarbonate resin having a dihydroxy diphenyl ether unit
A polycarbonate resin has a constitutional unit expressed by the following general formula (I):
A 1 represents an alkyl group which is substitutional or nonsubstitutional, and an aryl group...
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7348112 |
Polymeric charge transport materials having repeating units comprising an aromatic group and a —S— linkage
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
...
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7323232 |
Resin composition for spacer, spacer, and liquid crystal display device
To provide a resin composition for spacer useful for the formation of a pixel-patterned spacer on a substrate in a liquid crystal display device, a spacer using the composition, and a liquid...
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7314694 |
Photoconductive imaging members
An imaging member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is comprised of a metal alkyoxide, an amino...
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7309552 |
Electrophotographic photoconductor, electrophotography, electrophotographic apparatus, process cartridge for electrophotographic apparatus and azo compound
To provide a highly sensitive and highly durable electrophotographic photoconductor, electrophotography, photographic apparatus and process cartridge for the electrophotographic apparatus which is...
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7291433 |
Poly(hydrazone)-based charge transport materials
An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
...
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7270927 |
Non-halogenated polymeric binder
A non-halogenated binder material, such as for an electrophotographic imaging member binder, includes a copolymer of vinyl acetate and vinyl acid.
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7267917 |
Photoreceptor charge transport layer composition
A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g.,...
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7244535 |
Electrophotographic photoreceptor
An electrophotographic photoreceptor including an electroconductive substrate and a photosensitive layer formed thereon, the photosensitive layer containing a polyester resin which is a...
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7229732 |
Imaging members with crosslinked polycarbonate in charge transport layer
A composition comprised of a charge transport compound and a crosslinked polymer composition generated from the curing of a solution of a hydroxyl pendant polycarbonate, a hydroxylated charge...
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7217483 |
Electrophotographic photoreceptor, drum cartridge employing the electrophotographic photoreceptor, and image-forming apparatus
The present invention provides an electrophotographic photoreceptor which has high light resistance, has high durability in exposure to oxidizing gases such as ozone and NO x , is excellent in...
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7186490 |
Photosensitive material, electrophotographic photoreceptor using the material, and electrophotographic image forming method and apparatus using the photoreceptor
A titanyl phthalocyanine crystal having an X-ray diffraction spectrum having a plurality of diffraction peaks in which a maximum diffraction peak is observed at a Bragg (2 θ) angle of...
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7175955 |
Electrophotographic photoreceptor, electrophotographic process cartridge and image forming apparatus
An electrophotographic photoreceptor comprising a conductive substrate, and at least one layer, which contains a polymeric compound having a repeating unit selected from repeating units represented...
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7166400 |
Organophotoreceptor with a hydrazone polymer charge transport material
An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having
a) a charge...
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7160658 |
Electrophotographic photoreceptor, and image forming method, image forming apparatus, and image forming apparatus processing unit using same
An electrophotographic photoreceptor in which at least a photosensitive layer is provided above an electroconductive substrate, the outermost surface layer of the electroconductive substrate...
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7135261 |
Multi-layered organic electrophotographic photoconductor
A multi-layered organic electrophotographic photoconductor exhibits superior stability in mass production and excellent adhesion ability with two layers contacting the charge generation layer and...
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7094511 |
Electrophotographic photoreceptor, method for producing the same, image forming apparatus and process cartridge
The present invention relates to an electrophotographic photoreceptor comprising a conductive support having formed thereon a specific photosensitive layer. The photosensitive layer comprises a...
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7090952 |
Electrophotosensitive material
The present invention provides an electrophotosensitive material comprising a conductive substrate and a photosensitive layer provided on the conductive substrate, wherein the photosensitive layer...
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7083883 |
Polymer having stilbenquinone structure and electrophotographic photoreceptor containing the same
A polymer has stilbenquinone structures as a repetitive unit and an electrophotographic photoreceptor containing the polymer. More particularly, the polymer has an improved electro-transporting...
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7074534 |
Polymeric charge transport compositions and electronic devices made with such compositions
The present invention relates to polymeric charge transport compositions. The invention further relates to electronic devices in which there is at least one active layer comprising such charge...
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7045264 |
Single layered electrophotographic photoreceptor
A single layered electrophotographic photoreceptor includes a photosensitive layer having at least a charge generating material, a hole transporting material, an electron transporting material, and...
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7029811 |
Electrophotographic photoreceptor
An electrophotographic photoreceptor is disclosed which includes a conductive resin substrate and a resin layer. The resin layer includes a binding resin and is formed on the conductive resin...
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7022446 |
Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
An electrophotographic photosensitive member having a surface layer containing at least one of a charge-transporting material and conductive particles and a polymer obtained by polymerizing at...
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7012123 |
Acrylic polymer and charge transport material
An acrylic polymer suitable for use as a charge transport material, the acrylic polymer containing pendant π-conjugated groups represented by the following general formula (1) and having a triad...
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7010245 |
Color image forming apparatus
A multiple number of image forming stations are provided for multiple development colors including black. Each station having a photoreceptor. Each one of the photoreceptors has a charge transport...
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6974654 |
ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR, IMAGE FORMING METHOD AND APPARATUS, AND PROCESS CARTRIDGE USING THE PHOTOCONDUCTOR, AND LONG-CHAIN ALKYL GROUP CONTAINING BISPHENOL COMPOUND AND POLYMER MADE THEREFROM
An electrophotographic photoconductor has an electroconductive support and a photoconductive layer which is formed thereon and contains at least one resin of a polyurethane resin, a polyester...
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6936679 |
Charge-transporting polymer
A charge-transporting polymer is represented by the following general formula (I-1) or (I-2):
wherein A represents a group represented by the following general formula (II-1):
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6879794 |
Image forming apparatus
Disclosed are image forming apparatus [ 1 ] which comprises removing a toner remained on the surface of the rotatable image carrier by cleaning means after going through developing means and...
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6866977 |
Photoconductive elements having a polymeric barrier layer
Disclosed are photoconductive elements including a conductive support, e.g., an electrically conductive film, drum, or belt, on which a negatively chargeable photoconductive layer is disposed. An...
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6858362 |
Electrophotographic photoreceptor, and image forming method and apparatus using the photoreceptor
An electrophotographic photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and optionally a protective layer overlying...
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6830858 |
Electrophotographic photosensitive member, preparation method thereof, image forming process, apparatus and process cartridge using the same
An electrophotographic photosensitive member having a photosensitive layer provided on an electro-conductive supporting substrate and a protection layer provided on the photosensitive layer. The...
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6803163 |
Electrophotographic photoreceptor
A high-sensitivity and long-life electrophotographic photoreceptor comprising an electroconductive substrate and at least a photosensitive layer on the electroconductive substrate is provided,...
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