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7544450 Polymers of napthalene tetracarboxylic diimide dimers  
Polymers of naphthalene tetracarboxylic diimide dimmers are provided. The polymers are of the Formula I wherein the A units are selected from and Formula IX The polymers are suitable for use in the...
7144607 Liquid crystal orientation agents and liquid crystal display device with the use thereof  
A polyimide-containing liquid crystal alignment treating agent having a structure of the formula (I) incorporated therein, wherein Q is a single bond or a divalent organic group, R1 to R4 represent...
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...
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)...
6861188 Electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge therefor using the photoreceptor  
Electrophotographic photoreceptor having a photosensitive layer containing an amino compound selected from formulae 1 to 22 in the specification.
6361913 Long life photoreceptor  
An electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer, and an overcoat layer comprising a small molecule hole transporting...
6331370 Squeak and deletion resistant imaging member and system  
An imaging member includes a charge generation layer and a contiguous charge transport layer containing a diamine and a compound within the scope of formula (II): ##STR1##wherein each R1 and R2 is...
6068956 Electrophotographic photoconductor  
An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon which contains as a charge generation material a pigment including a compound with...
6066712 Styryl polymer, production method and use thereof  
The present invention relates to a styryl polymer, represented by the following formula (I) or (II), a production method thereof and use thereof to a photosensitive member and a electroluminescence...
6027845 Electrophotography photosensitive element  
An electrophotographic photoreceptor has a layered-type structure comprising an electrically conductive support having thereon a charge generating layer comprising a charge generating organic...
6004709 Allyloxymethylatedpolyamide synthesis compositions and devices  
An allyloxymethylatedpolyamide composition is disclosed, the allyloxymethylatedpolyamide being represented by Formulae I and II: ##STR1## wherein: n is a positive integer sufficient to achieve a...
5882829 Photoreceptor containing improved charge transporting small molecule  
An electrophotographic imaging member including a supporting substrate and at least one photoconductive layer, the photoconductive layer comprising a charge transporting material selected from the...
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...
5786119 Electrophotographic elements having charge transport layers containing high mobility polyester binders  
An electrophotographic element comprising a high mobility charge transport layer. The layer binder is a polyester according to formula I: ##STR1## wherein Ar represents phenylene, terephthoyl,...
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...
5578405 Electrophotographic photoconductor containing disazo and trisazo pigments  
An electrophotographic photoconductor includes an electroconductive support and a single-layered photoconductive layer formed thereon, containing a charge transporting material, a binder resin, and...
5561017 Polyester polymer, production thereof and electrophotographic photoreceptor using the same  
A polyester polymer comprising repeating units (I), or repeating units (I) and (II), and having a reduced viscosity (η sp/c) of 0.2 to 10.0 dl/g, measured at 20° C. as a 0.5 g/dl solution d...
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...
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...
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....
5434028 Diamine compounds  
A diamine compound having formula (I): ##STR1## wherein R1 is hydrogen, an alkyl group having 1 to 6 carbon atoms which may have a substituent, an alkoxyl group having 1 to 6 carbon atoms which may...
5418101 Photosensitive composition for use in an OPC comprising X-metal free phtholocyamine and a dispersant  
A composition of matter, useful in the production of organic photoconductor devices, comprising a dispersion of X-form metal-free phthalocyanine in an organic liquid containing an effective amount...
5413886 Transport layers containing two or more charge transporting molecules  
An electrophotographic imaging member including a charge generating layer and a charge transport layer, the charge transport layer having two or more charge transporting molecules having ionization...
5391447 Layered photoreceptor structures with overcoatings containing a triphenyl methane  
An electrophotographic imaging member including a substrate, a charge generating layer, a charge transport layer including charge transporting molecules dispersed in a first polymer binder, and an...
5368967 Layered photoreceptor with overcoat containing hydrogen bonded materials  
An electrophotographic imaging member comprising a substrate, a charge generating layer, a charge transport layer, and an overcoat layer comprising a small molecule hole transporting arylamine...
5324604 Multi-active electrophotographic element and imaging process using free radicals as charge transport material  
The present invention relates to a multi-active electrophotographic element having a charge-transport layer containing stable free radical compounds as the charge-transport material. A process of...
5314775 Photosensitive member comprising a diamino compound  
The present invention provides a new diamino compound represented by the following general formula [I]. ##STR1## The present invention provides also a photosensitive member and an...
5252417 Titanyl phthalocyanine crystal and electrophotographic photoreceptor using the same  
A novel titanyl phthalocyanine crystal showing X-ray diffraction peaks at Bragg angles (2θ±0.2) of 27.2°, 24.0°, 18.0°, 14.3°, and 9.5° and an electrophotographic photoreceptor containing the sa...
5213927 Inverse multiactive electrophotographic element  
New inverse multiactive electrophotographic elements comprise, in order: an electrically conductive layer; a charge-transport layer; a first charge-generation layer containing a charge-generation...
5085961 Multilayer organic photoconductor  
An organic photoconductor comprising an electrically conducting support, a charge generation layer and a charge transport layer wherein the charge generation layer contains a phthalocyanine and...
5002845 Electrophotographic image forming member and method and apparatus for transferring electrophotographic images formed on the member  
An electrophotographic image forming member for forming color images including an organic photosensitive layer sandwiched between a dielectric layer and a conductive layer. The photoconductive...
4996124 Photoconductor element, regenerating methods and elements useful therein  
Techniques are provided for regenerating photoconductor elements, particularly those of the unipolar, homogeneous type. These techniques utilize a low-voltage to moderate-voltage reverse charge....
4963450 Electrophotographic photosensitive member with disazo pigment  
A laminated layer type electrophotographic photosensitive member has a charge generation layer and a charge transport layer on an electroconductive support, characterized in that the charge...
4942106 Electrophotographic photosensitive member containing disazo pigment having coupler residue  
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that said photosensitive layer contains a disazo pigment of the formula...
4908289 Photoreceptor for electrophotography  
Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds...
4895782 Process for preparing dispersion liquid containing organic, photoconductive azo pigment and process for preparing electrophotographic, photosensitive member  
A process for preparing a dispersion liquid containing an organic photoconductive azo pigment by use of a solvent is provided which comprises subjecting the azo pigment to a heating treatment in a...
4882257 Electrophotographic device  
An electrophotographic device performing reversal development to develop the portion with lower absolute value of potential in an electrophotographic process having steps of primary charging,...
4882250 Copper phthalocyanine photoreceptor and method for producing the same  
A photoreceptor comprises a conductive substrate, a charge generating layer and a charge transporting layer, the charge generating layer being formed by bonding to the substrate a film layer having...
4877701 Photosensitive member for electrophotography  
A photosensitive member for electrophotography which is excellent in successive copying characteristics as well as mechanical durability is provided. The photosensitive member comprises a...
4873164 Electrophotographic photoreceptor comprising a charge transport medium and a bis-azo compound containing oxygen  
An electrophotographic photoreceptor according to the present invention has a photosensitive layer comprising a bis-azo compound represented by the general formula (I): ##STR1## wherein K1 and K2...
4869982 Electrophotographic photoreceptor containing a toner release material  
An organic photosensitive member for use in electrophotography comprising a conductive substrate and one or more electrically operative layers is disclosed. The imaging layer of the member contains...
4863823 Electrophotographic member with the surface layer having a fluorine type resin powder and a fluorine type block polymer  
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that the surface layer contains a fluorine type resin powder and a fluorine...
4851314 Electrophotographic photosensitive member with combined polycarbonate resins  
An electrophotographic photosensitive member comprises a photosensitive layer on an electroconductive substrate, and photosensitive layer comprising at least one polycarbonate resins (I) having a...
4818654 Electrophotographic photosensitive member with combination of polymethyl methacrylate resins  
An electrophotographic photosensitive member is provided which has an electroconductive substrate and a photosensitive layer, said photosensitive layer containing at least one of (I) polymethyl...
4772526 Electrophotographic element  
A reusable electrophotographic imaging element having a photoconductive surface layer in which the binder resin comprises a block copolyester or copolycarbonate having a fluorinated polyether...
4719163 Multi-active photoconductive insulating elements exhibiting far red sensitivity  
Multi-active photoconductive insulating elements which are sensitive in the far red region of the spectrum are comprised of a charge-generation layer and a charge-transport layer in electrical...
4711831 Spectral sensitization of amorphous silicon photoconductive elements with phthalocyanine and arylamine layers  
Multi-layer photoconductive elements comprising one or more layers of hydrogenated amorphous silicon are provided with sensitizing and supersensitizing layers which function to alter the spectral...
4707427 Squarylium compound in an electrophotographic element  
Novel squarylium compounds, a process for the production thereof as well as to a photoreceptor for electrophotography containing the squarylium compound are disclosed, said squarylium compounds...
4629670 Photoconductive film of azulenium salt and electrophotographic photosensitive member  
Photoconductive films contain specified azulenium salt compounds. Electrophotographic photosensitive members are provided with a photoconductive film containing at least one of the specified...
4626485 Substituted squarium compounds, process for preparing the same and electrophotographic photoreceptors containing the same  
Novel squarium compounds which have a flat photosensitivity in the wide range from visible ray region to the near infrared ray region as a charge generator and which can be prepared by reacting...
Matches 1 - 50 out of 75 1 2 >