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8088540 Photoreceptor for electrophotography  
An object of the invention is to provide a photoreceptor for electrophotography which has a low residual potential in an initial stage, is inhibited from increasing in residual potential, is...
8003286 Photoreceptor for electrophotography  
An object of the present invention is to provide an electrophotographic photoreceptor which is not impaired in electrophotographic properties such as charge potential and residual potential and...
7651827 Photoreceptor layer having phosphorus-containing lubricant  
An imaging member containing a substrate, and an outer layer containing a phosphorus-containing lubricant, and an image forming apparatus for forming images on a recording medium including the...
7534541 Heterocycle-hydrazone based charge transport materials  
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a...
7510809 Electrophotographic photoreceptor with two layer charge transfer layer, and apparatus utilizing the same  
An electrophotographic photoreceptor including a charge generating layer and a charge transfer layer accumulated on a support member, the charge transfer layer including at least two layers of a...
7479357 Electrophotographic organophotoreceptors with novel charge transport materials  
An organophotoreceptor that includes: (a) a charge transport material having the formula wherein A is selected from heterocyclic groups, naphthyl group, alkylsulfonylphenyl, stilbenyl or the group...
7364825 Charge transport materials having a nitrogen-containing-heterocycle hydrazone group  
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a...
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 where R1 and R2 are...
7220523 Bridged charge transport materials having two bicyclic heterocycle hydrazones  
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a...
7169519 Double-layered positively-charged organic photoreceptor  
A double-layered positively-charged organic photoreceptor t does not suffer from contamination caused by charge transport compounds that dissolve out during coating of a charge generating layer,...
7115346 Multi-layered electrophotographic positively charged organic photoconductor and manufacturing method thereof  
A multi-layered electrophotographic positively charged organic photoconductor includes a conductive substrate, a charge transport layer formed on the conductive substrate, and a charge generating...
7108948 Organophotoreceptor with charge transport compositions  
An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport...
7074532 Linked dihydrazone-based charge transport compounds  
Improved organophotoreceptors comprise: (a) a charge transport compound having the formula where n is an integer from 0 to 1;X is an (N,N-disubstituted)arylamine group;Ar is an aryl group or a...
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...
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: (a) a...
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: (a) a...
7008743 Organophotoreceptor with charge transport material having a vinyl ether group  
Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a...
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...
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.
6835514 Hydrazone-based charge transport compounds  
Improved organophotoreceptor include: (a) a charge transport compound having the formula where R1 has a structure of: in which Ar is selected form the group consisting of; R4 is a hydrogen or an...
6835513 Carbazole based charge transport compounds  
Improved organophotoreceptors have: (a) a charge transport compound having the formula: where R1 is hydrogen, a branched or linear alkyl group, a branched or linear unsaturated hydrocarbon group,...
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...
6768010 Organophotoreceptor with an epoxy-modified charge transport compound having an azine group  
Organophotoreceptors comprise an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: a) a charge...
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 ...
6432597 Electrophotographic photoconductor containing fluorenyl-azine derivatives and triarylamine in transport layer  
Azine derivatives or their combinations with hindered phenol antioxidant in the charge transport layer containing one or more triarylamines or a combination of one triarylamine and one hydrazone...
6379853 Electrophotographic imaging member having two charge transport layers for limiting toner consumption  
An electrophotographic imaging member including a supporting substrate, an optional charge blocking layer, an optional adhesive layer, a charge generating layer, and a charge transporting element...
6340548 Organophotoreceptors for electrophotography featuring novel charge transport compounds  
Organic photoreceptors that include a charge transport compound, a charge generating compound, and an electroconductive support in which the charge transport compound is a novel aryl...
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...
6214503 Organophotoreceptors for electrophotography featuring novel charge transport compounds based upon hydroxy-functional compounds  
The invention features organic photoreceptors that include a charge transport compound having the formula: ##STR1## where X is an N-alkyl-substituted carbazole, an N-aryl-substituted carbazole, or...
6022655 Photoreceptor for electrophotography, bishydrazone compound and intermediate thereof, and method for producing bishydrazone compound and intermediate thereof  
A photoreceptor for electrophotography of the present invention includes a photosensitive layer provided on a conductive support, the photosensitive layer containing a bishydrazone compound...
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...
6001523 Electrophotographic photoconductors  
The invention described in the specification provides an improved coating for an electrophotographic photoconductor printing system. In particular, a blend of polycarbonate-A and polycarbonate-Z...
5994010 Organic photoreceptor for electrophotography  
An organic photoreceptor for electrophotography including a substrate which is electrically conductive; and an organic photosensitive layer which is formed on the substrate, which includes a...
5958637 Electrophotographic photoreceptor and coating solution for production of charge transport layer  
An electrophotographic photoreceptor comprising a conductive support and a photosensitive layer which comprises a charge generation layer containing a charge generation material and a charge...
5945242 Electrophotographic photoreceptor containing hydrazone  
Disclosed is an electrophotographic photoreceptor having a high sensitivity, a high endurance and a high stability against repeated use which comprises a conductive support with a light-sensitive...
5925486 Imaging members with improved wear characteristics  
Benzaldehyde-based hydrazone compounds of the formula ##STR1## wherein A represents a monocyclic or polycyclic divalent aromatic radical including at least one hydroxy-terminated substituent; R1...
5882813 Electrophotographic photoreceptor  
An electrophotographic photoreceptor comprising a charge transporting material containing at least one triphenylamine compound represented by general formula (1) and at least one compound selected...
5804345 Photoreceptor for electrophotography  
An electrophotographic photoreceptor comprising a charge transport material and an anti-oxidant in the charge transport layer is disclosed. The transport material has a carbon atom of which the...
5804343 Electrophotographic photoconductor  
An electrophotographic photoconductor including an electroconductive support and a photoconductive layer formed thereon, which has at least a charge generation layer containing a charge generating...
5736282 Electrophotographic photoreceptors including titanyloxyphthalocyanine crystals  
An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer including a charge generation material and a charge transport material. The charge generation...
5721081 Photoconductor for electrophotography with antioxidants  
A photoconductor for electrophotography with excellent resistance against oxidation has a charge transport layer which contains at least two kinds of oxidants and at least one charge transport...
5618646 Electrophotographic photoreceptors with anti-oxidizing agents  
An electrophotographic photoreceptor has a conductive substrate and a photosensitive layer formed on the substrate. The photosensitive layer contains one compound which is selected from the group...
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...
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...
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...
5547790 Electrophotographic photoconductor containing polymeric charge transporting material in charge generating and transporting layers  
An electrophotographic photoconductor including an electroconductive support and a photoconductive layer formed thereon, which has at least a charge generation layer containing a charge generating...
5547791 Electrophotographic photoreceptor  
An electrophotographic photoreceptor of the present invention comprises on a conductive support a photosensitive layer containing an arylamine hydrazone compound which has --O--A substituent on...
5545499 Electrophotographic photoconductor having improved cycling stability and oil resistance  
A photoconductor for use in electrophotographic reproduction devices is disclosed. This photoconductor exhibits improved oil resistance when used with liquid toners and excellent cycling stability....
5521041 Polycarbonate, method of preparing the same and electrophotographic photoreceptor produced by using the same  
A polycarbonate and a method of preparing the polycarbonate which comprises a repeating unit represented by the following general formula ##STR1## wherein each of R1 and R2 respectively is a...
Matches 1 - 50 out of 157 1 2 3 4 >