Matches 201 - 250 out of 260 < 1 2 3 4 5 6 >
Match Document Document Title
4833052 Bisazo photoconductive imaging members  
A photoconductive imaging member comprised of a supporting substrate; a photogenerating layer comprised of a bisazo compound of the formula ##STR1## wherein Cp is an azoic coupler selected from the...
4830944 Function separated photosensitive member having a diphenylamine derivative disazo charge generation material  
A function separated type electrophotographic photosensitive member for infrared rays comprises a combination of a charge generation material and a charge transport material, wherein the...
4808506 Photoconductive imaging members with imidazole perinones  
Disclosed is an improved layered photoresponsive imaging member comprised of a supporting substrate; an imidazole perinone comprised of components with a mixture of cis and trans isomers of...
4797337 Disazo photoconductive imaging members  
Photoconductive imaging members comprising a supporting substrate, a hole transport layer, and a photogenerating layer comprising disazo compounds selected from the group consisting of: ##STR1##...
4792508 Electrophotographic photoconductive imaging members with cis, trans perylene isomers  
An improved layered photoresponsive imaging member comprised of a supporting substrate; a photogenerator layer comprised of cis and trans naphthalene imidazole perylene component of the following...
4786570 Layered, flexible electrophotographic imaging member having hole blocking and adhesive layers  
A flexible electrophotographic imaging member is disclosed which comprises a flexible substrate having an electrically conductive surface, a hole blocking layer comprising an aminosilane reaction...
4780385 Electrophotographic imaging member containing zirconium in base layer  
An electrophotographic imaging member is disclosed having an imaging surface adapted to accept a negative electrical charge, the electrophotographic imaging member comprising a metal ground plane...
4731315 Electrophotographic photoreceptor containing a trisazo compound and a charge transport material  
An electrophotographic photoreceptor is disclosed, comprising a conductive support having provided thereon a light-sensitive layer, wherein said light-sensitive layer contains a specific trisazo...
4725518 Electrophotographic imaging system comprising charge transporting aromatic amine compound and protonic acid or Lewis acid  
A process for preparing an electrophotographic imaging member comprising providing a photogenerating layer on a supporting substrate and applying a charge transport layer forming mixture to the...
4713307 Organic azo photoconductor imaging members  
A photoconductive imaging member containing a supporting substrate, certain azo pigments of 2,7-bis(1'-azo-2'-hydroxy-3'-naphthanilide)naphthalene and the derivatives thereof, and a hole transport...
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...
4628018 Silylated compositions, and deuterated hydroxyl squaraine compositions and processes  
Disclosed are novel silylated hydroxyl squaraine compositions, novel deuterated hydroxyl squaraine derivatives, and processes for the preparation thereof. More specifically, there is disclosed a...
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...
4621038 Photoconductive imaging members with novel symmetrical fluorinated squaraine compounds  
Disclosed are fluorinated squaraine compounds of the following formula: ##STR1## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of alkyl, aryl, and heterocyclic...
4606986 Electrophotographic elements containing unsymmetrical squaraines  
An unsymmetrical squaraine composition, process for synthesizing the unsymmetrical squaraine composition, devices containing the unsymmetrical squaraine composition, and methods of using the...
4607124 Processes for the preparation of mixed squaraine compositions  
An improved process for the preparation of mixed squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a fluoroaniline, in the presence of an aliphatic alcohol, and...
4588666 Photoconductive imaging members with alkoxy amine charge transport molecules  
Disclosed is a hole transporting molecule comprised of alkoxy derivatives of tetra phenyl biphenyl diamine of the following formula: ##STR1## wherein R 1 is independently selected from the group...
4587189 Photoconductive imaging members with perylene pigment compositions  
Disclosed is an improved layered photoresponsive imaging member comprised of a supporting substrate; a vacuum evaporated photogenerator layer comprised of a perylene pigment selected from the group...
4584253 Electrophotographic imaging system  
An electrophotographic imaging member is disclosed comprising a charge generation layer, a contiguous charge transport layer comprising an aromatic amine or hydrazone charge transport molecule in a...
4582772 Layered photoconductive imaging devices  
This invention is directed to an improved photoresponsive device comprised in the order stated of (1) a substrate, (2) a transmissive semi-conductive layer selected from the group consisting of...
4579800 Azo photoreceptor  
A photoreceptor comprising a support and a photosensitive layer which contains an azo compound of the formula [I]: ##STR1## wherein Q is a halogen atom, a hydrogen atom, an alkyl group, an alkoxy...
4560635 Toner compositions with ammonium sulfate charge enhancing additives  
Disclosed in the present application are toner compositions comprised of resin particles, pigment particles, and a sulfate charge enhancing additive selected from the group consisting of distearyl...
4559286 Mixed squaraine photoconductive compositions  
An improved process for the preparation of mixed squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a fluoroaniline, in the presence of an aliphatic alcohol, and...
4559287 Stabilized photoresponsive devices containing electron transporting layers  
An improved photoresponsive imaging member consisting essentially of a supporting substrate, a photogenerating layer, comprised of a photogenerating pigment optionally dispersed in an inactive...
4557989 Photoresponsive imaging members with dihydroxy metal phthalocyanine compositions  
Disclosed is an improved layered photoresponsive imaging member comprised of (1) a supporting substrate, (2) a photogenerating layer comprised of a dihydroxymetallic phthalocyanine, especially...
4555463 Photoresponsive imaging members with chloroindium phthalocyanine compositions  
Disclosed are improved photoresponsive imaging members comprised of chloroindium phthalocyanine photogenerating compositions. More specifically, there is disclosed a photoresponsive imaging member...
4552822 Photoconductive devices with hydroxy containing squaraine compositions  
Photoresponsive devices, including layered photoresponsive devices comprised of a photoconductive layer of squaraine compositions of the following formula: ##STR1## wherein R 1 , R 2 , and R 3 are...
4514482 Photoconductive devices containing perylene dye compositions  
This invention relates to improved photoresponsive devices including, for example, those comprised of (1) a supporting substrate, and (2) a photoconductive layer comprised of perylene dye...
4507480 Squaraines  
Squaraine compositions of the following formula ##STR1## wherein Ar is selected from the moieties specified in the specification are useful for incorporation into layered photoresponsive devices.
4504564 Method for the preparation of photoconductive compositions  
An electrophotographic imaging member is produced by providing a photoconductive layer and depositing thereon a solution of polycarbonate and substituted N,N'-diphenyl-N,N'-bis(alkyl...
4489148 Overcoated photoresponsive device  
This invention is directed to an improved photoresponsive device comprised of a substrate, a hole transport layer, an adhesive layer, an organic photoconductive layer sensitive to infrared...
4486520 Photoconductive devices containing novel squaraine compositions  
This invention is generally directed to fluorinated squaraine compositions of the formula: ##STR1## wherein R 1 , R 2 , R 3 , and R 4 , are independently selected from alkyl groups, containing from...
4471041 Photoconductive devices containing novel squaraine compositions  
An improved photoresponsive device comprised in the order stated of (1) a supporting substrate, (2) a photoconductive layer comprised of squaraine compositions of the following formula: ##STR1##...
4467023 Layered photoresponsive device containing hole injecting ground electrode  
An improved layered photoresponsive imaging device consisting of (1) a supporting substrate, (2) a photogenerating layer comprised of a charge carrier photogenerating pigment dispersed in a...
4464450 Multi-layer photoreceptor containing siloxane on a metal oxide layer  
An electrostatographic imaging member having two electrically operative layers including a charge transport layer and a charge generating layer, the electrically operative layers overlying a...
4457994 Photoresponsive device containing arylmethanes  
An improved layered photoresponsive device comprised of a substrate, a photogenerating layer, comprised of inorganic photoconductive composition, or an organic photoconductive composition, a charge...
4442192 Photoresponsive device containing an electron donating layer  
This invention relates to an improved layered overcoated photoresponsive imaging device useful in a xerographic imaging process employing a single charging step, which device is comprised in the...
4439507 Layered photoresponsive imaging device with photogenerating pigments dispersed in a polyhydroxy ether composition  
This invention is directed to an improved photoresponsive device comprised in the order stated of (1) an optional supporting substrate, (2) a conductive layer, (3) a photogenerating layer comprised...
4423131 Photoresponsive devices containing polyvinylsilicate coatings  
This invention is directed to an improved photoresponsive device containing as a protectant overcoating a top layer of a crosslinked polyvinylsilicate resulting from the reaction of polysilicic...
4421838 Processes for preparing photoconductive elements and electrophotosensitive materials  
A photoconductive element comprising elemental selenium dispersed in an insulating polymer is prepared by reducing an inorganic selenium compound in the presence of the insulating polymer. The...
4415639 Multilayered photoresponsive device for electrophotography  
This invention is directed to an improved photoresponsive device comprised of a substrate, a hole blocking layer, an optional adhesive layer, an inorganic photogenerating layer, an organic...
4410616 Multi-layered ambipolar photoresponsive devices for electrophotography  
This invention is directed to an improved ambipolar photoresponsive device useful in imaging systems for the production of positive images, from either positive or negative originals, which device...
4407920 Silicone ammonium salts and photoresponsive devices containing same  
This invention is directed to a photoresponsive device comprised of a substrate, a photoconductive composition comprised of an inorganic photoconductive composition, or a layered organic...
4397931 Stabilized organic layered photoconductive device  
This invention is generally directed to an organic layered photoresponsive device containing a charge transport layer comprised of a composition of the following: ##STR1## dispersed in a highly...
4378415 Color imaging, layered organic photoresponsive device having hole injection and transport layers, red sensitive layer and short wavelength sensitive layer  
This invention is directed to a layered organic photoresponsive device, and a method of highlight color imaging, the device being comprised of (1) a supporting substrate, (2) a layer of material...
4378418 Hole injecting contact for overcoated photoreceptors  
Disclosed is a layered photosensitive device which can be used in an electrophotographic imaging system, this device comprising a substrate which can be conductive or nonconductive, a hole...
4371600 Release overcoat for photoresponsive device  
This invention relates to a release material and photoresponsive devices, especially layered devices, containing such material; the release material being comprised of a cross-linked siloxy...
4346158 Imaging system with a diamine charge transport material in a polycarbonate resin  
A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises an electrically conductive layer. The second layer comprises a charge transport...
4338222 Semiconductive organic compositions  
An electrically conducting composition comprising an organic hole transporting compound and the reaction product of an organic hole transporting compound and an oxidizing agent capable of accepting...
4299897 Aromatic amino charge transport layer in electrophotography  
A photosensitive member having at least two electrically operative layers is disclosed. The first layer comprises a photoconductive layer which is capable of photogenerating holes and injecting...
Matches 201 - 250 out of 260 < 1 2 3 4 5 6 >