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7358015 |
Plasticized photoconductor
Plasticizers in a charge transfer layer to reduce surface cracking and crazing having a hydrocarbon chain, attached to a hindered phenol containing triazole or triazine moiety. Plasticizers found...
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7358014 |
Electrophotographic organophotoreceptors with novel charge transport compounds
A novel charge transport compound, a novel process using that novel compound and an organophotoreceptor includes:
(a) a novel charge transport compound having the formula
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7326506 |
Bridged charge transport materials having a central sulfur atom 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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7195850 |
Photoconductor with light fatigue additives
A photoconductor having a charge generation layer and a charge transport layer, the charge transport layer having hydrazone or aryl amine charge transport molecules and also having as room light...
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7153574 |
Surface grafted metal oxide particles and compositions comprising the same
A composition includes a metal oxide particle, which can optionally be surface treated by a silane coupling agent, and an electron acceptor surface grafted to the metal oxide particle.
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7125633 |
Imaging member having a dual charge transport layer
An imaging member having a charge transport layer with multiple regions or layers is provided. The charge transport layer includes at least two charge transport layers coated from solutions of...
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7112391 |
Electrophotographic organophotoreceptors with novel charge transport compounds
Charge transport compounds are described that have a multiple number of hydrazone-bridged (N,N-disubstituted)arylamine groups connected by a central bridging group. Examples of charge transport...
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7083884 |
Organophotoreceptor with charge transport material having a hydrazone group linked to an epoxy group and a heterocyclic ring
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
...
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7037632 |
Organophotoreceptor with charge transport material with fluorenone azine groups
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
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7011917 |
Organophotoreceptor with charge transport material having bis(9-fluorenone) azine groups
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising:
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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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6835514 |
Hydrazone-based charge transport compounds
Improved organophotoreceptor include: (a) a charge transport compound having the formula where R 1 has a structure of: in which Ar is selected form the group consisting of; R 4 is a hydrogen...
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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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6645686 |
Electrophotographic imaging members
An electrophotographic imaging member comprises a substrate, a charge generating layer, and a charge transport layer. The charge transport layer comprises a binder and charge transport molecules,...
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6645685 |
Process for producing printed wiring board
Disclosed is disclosed a process for producing a printed wiring board which comprises the steps of: a) exposing a wiring board having at least one photoconductive layer in which its chargeability...
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6544702 |
Charge transport layers comprising hydrazones and photoconductors including the same
Charge transport layers comprise a hydrazone charge transport compound, Savinyl® yellow and an antioxidant. Dual layer photoconductors comprise the charge transport layer in combination with a...
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6350553 |
Electrophotographic photoconductors comprising polyaryl ethers
A photoconductor comprises a substrate and at least one layer. The at least one layer is selected from the group consisting of charge transfer layers comprising a charge transfer molecule,...
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6287736 |
Photosensitive body for electrophotography
The present invention provides an organic photosensitive body having improved stability of the electric property at times of repeated use and at times of changes in conditions of environmental...
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6268095 |
Photoconductor for electrophotography
The present invention provides a new charge transport agent for use in a photosensitive layer in a positive-electrification-type electrophotographic photoconductor that can be used with high speed...
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6265124 |
Photoconductors and charge generation layers comprising polymeric hindered phenols
A photoconductor comprises a substrate and a charge generation layer comprising a charge generation molecule and a binder selected from the group consisting of butylated reaction products of...
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6245471 |
Charge generation layers comprising at least one titanate and photoconductors including the same
Charge generation layers for photoconductors comprise a charge generation compound and at least one titanate which improves at least one electrical characteristic of a photoconductor in which the...
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6242144 |
Electrophotographic imaging members
An electrophotographic imaging member including a substrate, a charge generating layer, and a charge transport layer including a hole transport host material, a trace amount of a shallow trap...
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6232025 |
Electrophotographic photoconductors comprising polaryl ethers
A photoconductor comprises a substrate and at least one layer. The at least one layer is selected from the group consisting of charge transfer layers comprising a charge transfer molecule,...
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6214502 |
Charge generation layers comprising binder blends and photoconductors including the same
Charge generation layers comprise a charge generation compound and a binder which comprises polyvinylbutyral and phenolic resol. Dual layer photoconductors comprise the charge generation layer in...
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6210847 |
Crystalline oxotitanylphthalocyanine and electrophotographic photoreceptor using the same
An object of the invention is to improve the photosensitivity characteristics, characteristics on repeated use and stability of a photoreceptor. A photosensitive layer formed on a conductive...
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6207334 |
Photoreceptor with improved combination of overcoat layer and charge transport layer
An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer, and an overcoat layer including a polyvinyl butyral film forming...
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6080518 |
Electrophotographic photoconductor containing simple quinones to improve electrical properties
A photoconductor for use in electrophotographic reproduction devices is disclosed. The photoconductor provides simultaneous improvement in both photoreceptor sensitivity and fatigue, while also...
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6066427 |
Methods for making a charge generating layers comprising type I polymorph of titanyl phthalocyanine with reduced photosensitivity and photoconductors including the same
Charge generation layers comprise a type I polymorph of titanyl phthalocyanine prepared by pre-milling a type IV polymorph in a media mill. Dual layer photoconductors comprise the charge generation...
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6045957 |
Photoconductor for electrophotography
A metal carboxylate of the following general Formula (I), (II), or (III), ##STR1## wherein Ar 1 represents an optionally substituted arylene group, Ar 2 represents one of the group consisting of...
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6042980 |
Photoconductor with charge generation binder blend
Charge generation layers for photoconductors comprise a binder and a charge generation compound, wherein the binder comprises a blend of polyvinylbutyral polymer and at least one resin which...
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6040098 |
Solution squarylium charge generation systems incorporating binder blends
Charge generation layers comprising a binder and a charge generation compound, wherein the binder comprises a blend of methyl bisphenol A and an additional resin comprising an epoxy resin, a...
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6004708 |
Electrophotographic photoconductor containing fluorenyl-azine derivatives as charge transport additives
A photoconductor for use in electrophotographic reproduction devices is disclosed. This photoconductor exhibits reduced room light and cycling fatigue without any corresponding negative impact on...
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5994013 |
Dual layer photoconductors with charge generation layer containing charge transport compound
Photoconductors comprise a substrate, a charge transport layer and a charge generation layer, wherein the charge transport layer comprises binder and a first charge transport compound and the...
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5882830 |
Photoconductive elements having multilayer protective overcoats
A photoconductive element comprising: an electrically conductive base; at least one active layer comprising an organic material, said at least one active layer being capable of charge generation...
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5853931 |
Photoreceptor for electrophotography
A photoreceptor for electrophotography has a substrate, charge-generation layer and a charge-transport layer, with either one of the charge-generation layer and charge-transport layer being a top...
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5763126 |
Electrophotographic photoreceptor and production process for same
The present invention provides an electrophotographic photoreceptor having a uniform film, in which the electrical characteristics are not deteriorated over an extended period of time without...
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5736283 |
Photoconductor for electrophotography
A photoconductor for electrography suitable for use in an electrophotography-applied apparatus of a wet development type includes a conductive substrate, a photosensitive layer provided on the...
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5733696 |
Inverted-lamination organic positive-photoconductor for electrophotography
An inverted-lamination organic positive-photoconductor for electrophotography comprises a conductive substrate, a charge transport layer on the conductive substrate, a charge generation layer on...
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5688620 |
Electrophotographic photoreceptor containing a residual charge-suppressing fatty acid ester in the photoconductive layer
Disclosed is an electrophotographic photoreceptor which gives a very low residual potential and scarcely accumulates the residual potential even by repeated use and which varies very slightly in a...
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5679488 |
Electrophotography photoreceptor
Disclosed is an electrophotographic photoreceptor comprising a conductive support and provided thereon an intermediate layer, a carrier generation layer and a carrier transport layer, wherein an...
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5665501 |
Photoconductive element with polycarbonate binder
A photoconductive element having a photoconductive layer containing a polycarbonate binder based on di-(monohydroxyaryl) alkane, wherein the polycarbonate contains a branching agent selected from...
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5656405 |
Organic photoconductor for electrophotography
An organic photoconductor for electrophotography that is light in weight, yields excellent images and is easily disposed of, which comprises a cylindrical conductive substrate that contains...
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5604063 |
Composition for charge transport layer and electrophotographic member using same
An electrophotographic member which can give printed images of high quality and is markedly high in photoresponsiveness can be provided without using halogen solvents by using a composition for...
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5604062 |
Organic photoconductor with crosslinked polyphenylene sulfide support for electrophotography
In an organic photoconductor for electrophotography, improved adhesiveness is realized between a substrate that contains a crosslinked polyphenylene sulfide as its main component and an organic...
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5589309 |
Electrophotographic photoreceptor containing perylenes
Disclosed is an electrophotographic photoreceptor comprising a conductive support and provided thereon an intermediate layer, a carrier generation layer containing a carrier generation material and...
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5554473 |
Photoreceptor having charge transport layers containing a copolycarbonate and layer containing same
Organic photoconductive imaging receptors in which the charge transport layer contains, as a binder, a copolycarbonate of 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane and...
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5516610 |
Reusable inverse composite dual-layer organic photoconductor using specific polymers
An inverse dual-layer organic photoconductor comprising a charge generation layer (CGL) formed on top of a charge transport layer (CTL), in turn formed on a substrate such as a web (drum) or...
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5492786 |
Electrophotographic photoreceptor
The present invention is directed to an electrophotographic photoreceptor which is smooth without orange peel, inhibits the rise of a residual potential and the drop of a charged potential, and is...
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5486936 |
Optically addressed spatial light modulator
An optically addressed spatial light modulator having a multilayer-type photo conductive layer with a charge carrier generation layer and a charge carrier transport layer having a large mobility....
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5445909 |
Electrophotographic photoreceptor
An electrophotographic photoreceptor high in sensitivity and contrast potential after light irradiation is disclosed. The photoreceptor comprises an electroconductive substrate having thereon a...
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