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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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7384716 |
Coating composition for electrophotographic photoreceptor, method for producing electrophotographic photoreceptor, electrophotographic photoreceptor, and image-forming apparatus
A coating composition for an electrophotographic photoreceptor that forms a charge-generating layer by being ejected from ejection nozzles in a form of droplets, comprises a charge-generating...
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7374855 |
Photoreceptors
Methods for texturing the surface of photoreceptors are provided.
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7348114 |
Photoconductive members
A photoconductive imaging member containing a photogenerating layer, and a charge transport layer containing a binder and a polyol ester.
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7344809 |
Imaging members
An imaging member having a charge transport layer is provided. The charge transport layer includes a plurality of charge transport layers coated from solutions of similar or different compositions...
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7333752 |
Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus which have the electrophotographic photosensitive member
An electrophotographic apparatus is disclosed using an electrophotographic photosensitive member which employs light with a short wavelength (380 nm to 500 nm) as image exposure light and is good...
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7297458 |
Imaging members
A photoconductive member containing a supporting substrate, a photogenerating layer, and a charge transport layer and wherein the photogenerating layer comprises a photogenerating component, and an...
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7291430 |
Imaging members
A member including for example, a substrate, a charge blocking layer, an optional adhesive layer, a charge generating layer comprising particles comprising a photogenerating layer of for example,...
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7276600 |
Phthalocyanine derivatives and their applications in optical recording media
An optical recording medium is disclosed, which is composed of a substrate, a recording layer comprising an organic dye upon which information can be recorded by a laser beam, a reflective layer...
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7270926 |
Imaging member
A process for preparing a charge generating layer comprising dispersing photoconductive phthalocyanine particles in a polymer matrix, the matrix comprising a polymeric film-forming reaction product...
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7229728 |
Positively-charged electrophotographic organic photoreceptor
A positively-charged electrophotographic organic photoreceptor includes an electrically conductive support, and a charge transport layer and a charge generating layer sequentially stacked on the...
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7211359 |
Coating solution containing cocrystals and or crystals of a charge-generation pigment or a mixture of charge-generation pigments
A method for preparing a coating solution containing a cocrystallized titanyl phthalocyanine-titanyl fluorophthalocyanine, the method comprising: dry milling a charge-generation pigment or mixtures...
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7205081 |
Imaging member
An imaging method utilizing an imaging member containing a supporting substrate, a layer of a charge carrier injecting surface, a hole blocking layer, an optional adhesive layer, a layer of a...
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7192677 |
Electrophotographic photoconductor
An electrophotographic photoconductor including an electroconductive support and a photoconductive layer formed thereon, which contains a phthalocyanine pigment and a disazo pigment of formula (I):...
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7175956 |
Organic photoconductive material, electrophotographic photoreceptor comprising the same, and image-forming apparatus
The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good...
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7163772 |
Organic electrophotographic photo-receptor
The present invention provides an organic electrophotographic photo-receptor having a conductive substrate and a photosensitive layer laid on the conductive substrate, wherein the photosensitive...
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7147978 |
Electrophotographic photoreceptors with novel overcoats
This invention relates to a photoreceptor that includes:
(a) an overcoat layer comprising at least a rheology modifier and a polymeric resin selected from the group consisting of urethane...
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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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7129012 |
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
An electrophotographic photosensitive member which has V A , V B , and d satisfying an expression (|−600−V A |−|−600−V B |)/d=0.13 and V C satisfying an expression −5=−(−450−V C...
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7115345 |
Electrophotographic imaging members
According to the present invention is an electrophotographic imaging member which is a thin dual layer structure comprising a top layer of a durable and wear-resistant layer and a bottom layer...
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7097950 |
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
An electrophotographic photosensitive member capable of outputting an image in which a defect such as a ghost is suppressed even in a high-temperature-and-high-humidity environment, and in which a...
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7074533 |
Photoconductive members
A photoconductive imaging member containing a supporting substrate, a photogenerating layer, a charge transport layer, and in contact with the charge transport layer a layer comprised of a polymer...
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7052813 |
Imaging member
A charge transport layer for an imaging member comprising a first and second charge transport layer wherein the second charge transport layer comprises a charge transport component, a hindered...
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7049038 |
Photoconductive imaging members having pyrolized polyacrylonitrile hole blocking layer
A photoconductive imaging member comprised of an optional supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking...
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7045263 |
Photoreceptor for electrophotography having a salt of an electron transport compound
This invention relates to an improved organophotoreceptor that comprises an electrically conductive substrate; a photoconductive element comprising a charge generation compound and a salt of an...
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7011919 |
Self-dispersing titanyl phthalocyanine pigment compositions and electrophotographic charge generation layers containing same
In a process for forming a self-dispersing crystalline phthalocyanine pigment composition of monodisperse nanoparticles, a mixture containing titanyl fluorophthalocyanines, unsubstituted titanyl...
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7008742 |
Heat-induced formation of co-crystalline composition containing titanyl phthalocyanine and titanyl fluorophthalocyanine
A process for forming a cocrystalline mixture of titanyl phthalocyanine (TiOPc) and titanyl fluorophthalocyanine (TiOFPc) includes: dry milling a mixture of crude TiOPc and crude TiOFPc, thereby...
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6969573 |
Blue diode laser sensitive photoreceptor
An electrostatographic article including: a substrate; a charge generator layer overcoated on the substrate and which layer is sensitive to blue light; and a charge transport layer overcoated on...
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6946225 |
Electrophotographic element protected from photofatigue induced by visible light
A multi-active electrophotographic charge generation element comprises a conductive support, a charge generation layer (CGL) disposed on the conductive support, and a charge transport layer (CTL)...
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6933089 |
Imaging member
A charge transport layer for an imaging member comprising a dual charge transport layer and wherein the charge transport layers comprise a photogenerating layer; (1) a first charge transport layer...
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6921618 |
Photoconductive organic pigment, photoconductive organic pigment dispersion liquid, electrophotographic photoreceptor and electrophotographic device using the same
The present invention relates to a photoconductive organic pigment comprising granular cores and an organic pigment having photoconductive properties which organic pigment adheres to the surfaces...
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6919154 |
Photoconductive members
A photoconductive imaging member containing a supporting substrate, a photogenerating layer, a charge transport layer, and in contact with the charge transport layer comprised of a polymer and a...
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6890693 |
Organophotoreceptor with an electron transport layer
Improved organophotoreceptor have an electrically conductive substrate, a charge generation layer comprising a charge generation compound and optionally a charge transport compound, and an overcoat...
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6858364 |
Electrophotographic photoreceptors
The subject application provides for a composition crystal comprising a phthalocyanine compound and an asymmetric phthalocyanine wherein a part of benzene ring in phthalocyanine structure is...
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6858363 |
Photoconductive imaging members
A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer thereover, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is...
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6833226 |
Electrophotographic apparatus, process cartridge and electrophotographic photosensitive member
In an electrophotographic apparatus including an electrophotographic photosensitive member around which a charger, an exposure device, a developing device and a transfer device are provided in this...
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6811940 |
Mixed substance of triphenylamine dimers
The present invention intends to provide a TPD derivative being excellent in electric properties as a compound due to its extremely less content of impurities (TPD analogues) as well as being...
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6797445 |
Imaging member
A flexible electrophotographic imaging member comprising a supporting substrate, at least one imaging layer on one side of the supporting substrate, a charge blocking layer, an optional adhesive...
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6787276 |
Dual layer photoconductors with charge transport layer including styrene-acrylic resin
Charge transport layers comprise a charge transport compound and binder including styrene-acrylic resin. Dual layer photoconductors comprise a substrate, a charge transport layer as described, and...
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6768006 |
Phthalocyanine crystal, production process therefor, and electrophotographic photosensitive member, process cartridge and apparatus using the crystal
An electrophotographic photosensitive member exhibiting a high sensitivity and a potential stability on repetitive use and capable of suppressing image defects, such as black spots in a reversal...
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6703174 |
Electrophotographic apparatus and process cartridge
An electrophotographic apparatus includes an electrophotographic photosensitive member comprising a support and a photosensitive layer thereon, a charging means for charging the photosensitive...
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6645687 |
Imaging members
A process comprising forming chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidinone (NMP) to provide a ClGaPc (NMP) Type I; separately dry milling and then wet treating the Type I...
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6613488 |
Electrophotographic photosensitive material, electrophotographic photoconductor, and method for manufacturing same
A phthalimide salt compound is contained in a photosensitive material having a charge generating function. Such a photosensitive material exhibits high retention rates of the surface charge. An...
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6569587 |
Photosensitive body for electrophotography and manufacturing method for the same
An electrophotographic photosensitive body has a photosensitive layer formed on a conductive substrate. The photosensitive layer contains a phthalocyanine compound as a photoconductive material,...
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6492080 |
Process for tuning photoreceptor sensitivity
A process including: forming a first chlorogallium phthalocyanine (ClGaPc) in N-methyl-2-pyrrolidone (NMP) to form a ClGaPc (NMP) Type-I product; forming a second chlorogallium phthalocyanine in...
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6465142 |
Low-temperature cure polyvinylbutyral as a photoconducter binder
Poly(vinyl butyral) compounds of Formula 1 where R 1 is alkyl, dialkyl ether, alkyl carbonyl, cycloalkyl, cycloalkyl alkyl, aryl, aryl carbonyl, alkaryl carbonyl, aralkyl, or alkyl aralkyl; Z...
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6444385 |
Electrophotosensitive material and method of producing the same
The present invention relates to an electrophotosensitive material wherein a layer containing a binder resin and a pigment among a photosensitive layer is formed by applying and drying a coating...
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6423459 |
Electrophotographic photoconductor and manufacturing method for the same
A photosensitive layer of an electrophotographic photoconductor has at least one phthalocyanine compound, wherein the photosensitive layer contains a metal phthalocyanine compound bonded by an...
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6391505 |
Phthalocyanine crystal and its production, and electrophotosensitive material using the same
Disclosed are a phthalocyanine crystal in which an organic acceptor compound is associated with a phthalocyanine molecule, wherein said organic acceptor compound has a reduction potential to a...
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6350550 |
Photoreceptor with adjustable charge generation section
A charge generation section of an electrophotographic imaging member, having hydroxygallium phthalocyanine photoconductive pigment and benzimidazole perylene photoconductive pigment in a solvent...
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