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8034519 Electrophotographic photoreceptor and image formation method  
Disclosed is an electrophotographic photoreceptor comprising on or over an electrically conductive support a photosensitive layer containing a pyranthrone compound represented by the following...
7923184 Photoconductors containing trimellitimide esters  
The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains trimellitimide esters additives.
7888455 Polycarbonate copolymer, method for producing the same, molded body, optical material, and electrophotographic photosensitive body  
A polycarbonate copolymer contains: 0.1 to 50 mol % of a monomer unit represented by the following formula (1); and a monomer unit represented by the following formula (2). In the polycarbonate...
7838186 Photoconductors containing charge transport chelating components  
A photoconductor that includes an optional supporting substrate, a photogenerating layer, and at least one charge transport layer, and wherein the charge transport layer contains a phenolic...
7700249 Single layered photoconductors  
A photoconductor that includes a supporting substrate, and an active layer in contact with the substrate, and which active layer contains a photogenerating pigment of a hydroxygallium...
7553592 Photoreceptor with electron acceptor  
An electrophotographic imaging member includes at least one layer including a hole transport material and a strong electron acceptor material, such as an electrophotographic imaging member...
7314692 Phenylazomethylene-cyclohexadienone derivatives comprising electron withdrawing group and electrophotographic photoreceptor comprising the derivatives  
A phenylazomethylene-cyclohexadienone derivative and an electrophotographic photoreceptor include a compound that is represented by the following formula: wherein R1 and R2 are independently...
7220522 Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the electrophotographic photoreceptor  
A photoreceptor including a photosensitive layer including a specific diamine compound, or a photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the...
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...
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...
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...
7078139 Electrophotographic photoreceptor for wet development  
An electrophotographic photoreceptor for wet development including an electrically conductive substrate, and an organic photosensitive layer formed on the electrically conductive substrate, wherein...
7070892 Imaging members  
A photoconductive imaging member containing a supporting substrate, and thereover a single layer comprised of a photogenerator component, a charge transport component, an electron transport...
7070894 Photoconductive imaging members  
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...
7060405 Naphthoquinone derivative and electrophotographic photoreceptor containing the same  
A naphthoquinone derivative is utilized in an electrophotographic photoreceptor as an electron-transporting material. The electrophotographic photoreceptor is improved in terms of solubility in an...
6991880 Imaging members  
A member including for example, a substrate, a charge generating layer, a charge transport layer comprising a poly(phenylsilsesquioxane), molecule, and a film forming binder.
6713220 Photoconductive members  
A photoconductive imaging member comprised of a supporting substrate, a photogenerating layer and a charge transport layer, and wherein said charge transport layer contains a component that...
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...
6521386 Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor  
An electrophotographic photoreceptor including an electroconductive substrate and a photoreceptive layer, which is formed overlying the substrate, wherein the photoreceptive layer includes a charge...
6500592 Electrophotosensitive material  
Disclosed is an electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the substrate, the photosensitive layer containing a quinone derivative of the...
6395439 Naphthoquinone derivative and electrophotosensitive material using the same  
The present invention relates to a naphthoquinone derivative of the formula (1): wherein R1 and R2 are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 6...
6383698 Electrophotosensitive material using quinone derivative  
The present invention relates to an electrophotosensitive material comprising a conductive substrate and a photosensitive layer formed on the substrate, the photosensitive layer containing a...
6280893 Electrophotographic photoreceptor  
Electrophotographic photoreceptors for use in photocopiers and laser printers, among other things, possessing high electron mobility and superior photosensitivity properties. The photoreceptors of...
6228546 Polymer, electrophotographic photosensitive member containing the polymer, process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member  
A polymer has a structural unit represented by the following formula (1): ##STR1##wherein X is single bond, substituted or unsubstituted alkylene group, --S--, or --O--, R1 to R6 are each hydrogen...
6187493 Electrophotosensitive material  
The present invention provides an electrophotosensitive material comprising a conductive substrate and a photosensitive layer provided on the conductive substrate, the photosensitive layer...
6099997 Photoconductive recording material comprising a crosslinked binder system  
A photosensitive recording material containing a support and a charge generating layer (CGL) in contiguous relationship (contact) with a charge transporting layer (CTL), containing an n-charge...
6074792 Tetraazaporphyrin pigment for use in electrophotographic photoconductor and electrophotographic photoconductor using the same  
A pigment includes a compound with a tetraazaporphyrin skeleton represented by formula (I): ##STR1## wherein M is a hydrogen atom, or an atom or compound capable of bonding to tetraazaporphyrin...
6063534 Nitro group-containing naphthoquinone derivatives and photosensitive material using the same for electrophotography  
A nitro group-containing naphthoquinone derivative represented by the following general formula: ##STR1## wherein R is a monovalent hydrocarbon group having a nitro group, and a ring A may be...
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...
5994012 Naphthoquinone derivative and electrophotosensitive material using same  
The present invention provides a naphthoquinone derivative represented by the general formula (I): ##STR1## wherein R1 and R2 are as defined in the specification. An electrophotosensitive material...
5976742 Naphthoquinone derivative and electrophotographic material using the naphthoquinone derivative  
The present invention provides a novel naphthoquinone derivative preferred as an electron transporting agent and an electrophotographic photosensitive material of high sensitivity which contains a...
5965063 Charge transporting material and method of preparing charge transporting particulates used therein  
Disclosed are a charge transporting material useful as a material for organic electronic devices such as an electrophotographic photoreceptor, an organic EL device, and an organic solar cell and a...
5942362 Electrophotographic photoconductor  
An electrophotographic photoconductor has an electroconductive support and a photoconductive layer provided thereon, containing at least one phenol compound of formula (1): ##STR1## wherein R1 to...
5942359 Electrophotoreceptor  
Disclosed is an electrophotoreceptor comprising a conductive substrate and provided thereon, a photoreceptive layer comprising a charge generation material, an organic electron transporting charge...
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...
5795690 Electrophotographic photoreceptor, image forming apparatus and image forming process  
An electrophotographic photoreceptor is disclosed which comprises an electrically-conductive substrate having provided thereon an undercoat layer and a photosensitive layer, wherein said undercoat...
5707766 Electrophotographic photosensitive material  
An electrophotographic photoconductor includes an electroconductive substrate and a photosensitive layer which is provided on the electroconductive substrate and which includes a charge generating...
5641599 Electrophotographic imaging member with improved charge blocking layer  
An electrophotographic imaging member including a substrate, a hole blocking layer, an optional interface adhesive layer, a charge generating layer, and a charge transport layer, the blocking layer...
5631114 Derivatives of diiminoquinones useful as electron transport agents in electrophotographic elements  
Derivatives of diiminoquinones are useful as electron transport agents in electrophotography. The diiminoquinone derivatives are inexpensive materials, requiring only two steps to synthesize, have...
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...
5558965 Diiminoquinilidines as electron transport agents in electrophotographic elements  
Derivatives of diiminoquinilidines are useful as electron transport agents in electrophotography. The diiminoquinilidine derivatives are inexpensive materials, requiring only two steps to...
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...
5501930 Electrophotographic photoreceptor containing enamine derivative  
An electrophotographic photoreceptor is herein disclosed which comprises a conductive support and a photosensitive layer formed on the conductive support, and the photosensitive layer contains an...
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....
5460909 Pyrazine compound and electrophotographic photoconductor comprising the same  
A pyrazine compound of formula (I) and a pyrazine compound of formula (II): ##STR1## wherein R is an unsubstituted or substituted phenyl group, an unsubstituted or substituted naphthyl group; and...
5449580 Organic photosensitive material for electrophotography  
Disclosed is an organic photosensitive material for electrophotography which is characterized by containing a specific diphenoquinone derivative in an organic photosensitive layer of the material....
5437950 Electrophotographic imagimg member with enhanced photo-electric sensitivity  
An electrophotographic imaging member including a substrate, an optional blocking layer, an optional thermoplastic adhesive interface layer, a thin charge generation layer comprising pigment...
5399453 Electrophotograhic photoreceptor  
The invention provides an electrophotographic photoreceptor excellent in various characteristics, especially effectively protected from light fatigue and stable against repeated use. The...
5336577 Single layer photoreceptor  
A thick organic ambipolar layer on a photoresponsive device is simultaneously capable of charge generation and charge transport. In particular, the organic photoresponsive layer contains an...
5328789 Electrophotographic organic photoconductor  
An electrophotographic organic photosensitive layer is formed by using a diphenoquinone derivative A and a diphenoquinone derivative B having a larger absolute value for reduction potential as...
Matches 1 - 50 out of 131 1 2 3 >