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7629095 |
Electrophotographic photoreceptor
An electrophotographic imaging member includes a substrate, a charge generating layer, and a charge transport layer, where the charge generating layer includes a photogenerating material and a...
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7622232 |
Electrophotographic photoreceptor and electrophotographic imaging apparatus employing the photoreceptor
An electrophotographic photoreceptor including a photosensitive layer which includes a titanyl phthalocyanine crystal having a major absorption peak at a wavelength of 780 nm±10 nm and a minor...
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7622231 |
Imaging members containing intermixed polymer charge transport component layer
A photoconductor containing a photogenerating layer, at least one charge transport layer, and a layer in contact with the charge transport layer comprised of a suitable polymer, and wherein the...
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7618756 |
Photoconductors containing chelating components
A photoconductor containing a supporting substrate, a photogenerating layer; and at least one charge transport layer where the photogenerating layer contains a photogenerating pigment and a...
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7560206 |
Photoconductors with silanol-containing photogenerating layer
A photoconductor containing an optional supporting substrate, a silanol containing photogenerating layer, and at least one charge transport layer.
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7560204 |
Latent electrostatic image bearing member, and the method for producing the same, image forming method, image forming apparatus, and process cartridge
The present invention provides a latent electrostatic image bearing member which includes a support, a charge generating layer, and a charge transporting layer, the charge generating layer and the...
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7560203 |
Electrophotographic photoreceptor, method of image formation, image formation apparatus and process cartridge for image formation apparatus
An electrophotographic photoconductor that is excellent in the stability of image quality and can realize high durability is provided. In an electrophotographic photoconductor in which an...
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7550239 |
Alkyltriol titanyl phthalocyanine photoconductors
A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the photogenerating layer contains an alkyltriol, such as...
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7537872 |
Image bearing member with charge blocking layer and moire prevention layer, and image forming apparatus and process cartridge using the same
An image bearing member including an electroconductive substrate, a charge blocking layer disposed overlying the electroconductive substrate, a moire prevention layer disposed overlying the charge...
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7514191 |
Imaging member
An imaging member is disclosed with a charge transport layer comprising a dimethyl terphenyl diamine having the structure of Formula (I):
wherein n is an integer from 0 to about 18. The...
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7507510 |
Polyphenyl ether phosphate containing photoconductors
An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl...
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7485398 |
Titanyl phthalocyanine photoconductors
A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer comprised of at least one charge transport component wherein the at...
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7479358 |
Ether and thiophosphate containing photoconductors
An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one C-ether of...
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7476478 |
Polyphenyl thioether and antioxidant containing photoconductors
An imaging member containing an optional supporting substrate, a photogenerating layer and at least one charge transport layer of at least one charge transport component, at least one polyphenyl...
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7473505 |
Ether and antioxidant containing photoconductors
A photoconductor containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, at least one C-ether of the formula
wherein R 1 , R 2 , R 3 and...
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7452643 |
Polyphenyl ether and thiophosphate containing photoconductors
An imaging member containing an optional supporting substrate, a photogenerating layer, and at least one charge transport layer of at least one charge transport component, at least one polyphenyl...
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7449269 |
Electrophotographic photoreceptor having defined mobility of electric charges in photosensitive layer and image forming device incorporating same
The invention provides an electrophotographic photoreceptor capable of producing high quality images even when development is carried out under low electric potential conditions, and also provides...
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7419751 |
Titanylphthalocyanine crystal and method of producing the titanylphthalocyanine crystal, and electrophotographic photoreceptor, method, apparatus and process cartridge using the titanylphthalocyanine crystal
A titanylphthalocyanine crystal having an X-ray diffraction spectrum having plural diffraction peaks and a primary particle diameter not greater than 0.2 μm, wherein a maximum diffraction peak is...
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7399564 |
Electrophotographic photoconductor
An electrophotographic photoconductor where generation of cracks, crystallization of a photosensitive layer, and the like occur infrequently by sticking of finger oil. An electrophotographic...
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7378204 |
Photoconductive member
A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that...
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7371497 |
Electrophotographic image forming method
An electrophotographic image forming apparatus comprising:
an electrophotographic photoreceptor comprising:
an electroconductive substrate; a charge generation layer; and a charge...
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7371491 |
Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor, and image forming apparatus and process cartridge using the electrophotographic photoreceptor
A photoreceptor including an electroconductive substrate; and a charge blocking layer; a moiré preventing layer; and a photosensitive layer, which are overlaid overlying the substrate in this...
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7371490 |
Photoconductor, image forming apparatus, image forming process, and process cartridge
The object of the present invention is to provide a photoconductor that is highly sensitive, stable in image quality under repeated usages, and affords prolonged life. In order attain the object,...
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7354686 |
Electrophotographic photoconductor and process for manufacturing the same, and image forming apparatus and process cartridge containing the same
An electrophotographic photoconductor includes an electroconductive substrate, a charge generation layer, and a charge transport layer formed by using a halogen-free solvent, arranged in this...
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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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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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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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7033716 |
Two-stage milling process for preparing cocrystals of titanyl fluorophthalocyanine and titanyl phthalocyanine, and electrophotographic element containing same
An amorphous mixture consisting essentially of TiOFPc and TiOPc and containing more than 75 weight percent of substantially chlorine-free TiOPc is produced by forming a mixture of crude crystalline...
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7033715 |
Uniform cocrystals of titanyl fluorophthalocyanine and titanyl phthalocyanine formed in trichloroethane, and charge generating layer containing same
In a process for forming a nanoparticulate crystalline titanium phthalocyanine pigment composition, a titanium phthalocyanine pigment is contacted with substantially pure 1,1,2-trichloroethane...
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7029810 |
Electrophotographic image forming apparatus
An electrophotographic image forming apparatus comprising:
an electrophotographic photoreceptor comprising:
an electroconductive substrate; a charge generation layer; and a charge...
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7018758 |
Photoconductive imaging members
A photoconductive imaging member comprised of a hole blocking layer, a photogenerating layer, and a charge transport layer, and wherein the hole blocking layer is generated from a solution of a...
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7018757 |
Photoconductor materials based on complex of charge generating material
An electrophotographic article having a complex of charge generating material and at least one transfer material selected from the group consisting of electron transfer material and hole transfer...
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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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6984479 |
Electrophotographic photoconductor and manufacturing method therefore
An electrophotographic photoconductor includes a photosensitive layer on a conductive substrate. The photosensitive layer contains a pigment that consists of crystallites composed of molecules...
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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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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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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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6815132 |
Photoconductor materials based on new phase of titanyl phthalocyanine
A crystalline phase of titanyl oxyphthalocyanine, referred to herein as the S-phase, has an internal blend of lattice arrangements is provided by treatment of the gamma-form of titanyl...
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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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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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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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6696214 |
Electrophotographic photoreceptor, process for production thereof, and image-forming apparatus using same
The invention provides an electrophotographic photoreceptor, in which suppression of image defects and high sensitivity are compatible, and a method for production thereof. The invention also...
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6623900 |
Phthalocyanine compound and organic photoconductor
A di-substituted alkylene glycolate titanium phthalocyanine compound comprising a reaction mixture of a threo-alkanediol having one hydroxy group per each of the two adjacent carbon atoms, said...
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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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6586148 |
Imaging members
A photoconductive member with a supporting substrate, and thereover a first layer comprised of a mixture of a photogenerator component, a hole transport component, and an electron transport...
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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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6558863 |
Electrophotographic photoreceptor, electrophotographic image forming method and apparatus using the photoreceptor
A photoreceptor including an electroconductive substrate and a photosensitive layer which is formed on the electroconductive substrate and which includes a charge generation material, wherein the...
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6544701 |
REACTION PRODUCT, PROCESS FOR THE PRODUCTION THEREOF, ELECTROPHOTOGRAPHIC PHOTOCONDUCTOR USING THE REACTION PRODUCT, ELECTROPHOTOGRAPHIC APPARATUS USING THE PHOTOCONDUCTOR, AND PROCESS CARTRIDGE FOR ELECTROPHOTOGRAPHIC APPARATUS
To provide a novel reaction product useful as an organic photoconductive material for electrophotographic photoconductors. A product obtainable by reacting (i) a nitrile derivative, (ii) a...
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6541172 |
Electrophotographic photosensitive member, electrophotographic apparatus and process cartridge
The present invention provides an electrophotographic photosensitive member wherein a maximum height (RmaxD) of a surface roughness of a support portion is 1.2 μm RmaxD≦5.0 μm, an average...
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