摘要:
Disclosed is a polymer of the formula ##STR1## wherein A is ##STR2## or a mixture of ##STR3## wherein R is a hydrogen atom, an alkyl group, an aryl group, or mixtures thereof, B is one of specified groups, such as ##STR4## or mixtures thereof, and n is an integer representing the number of repeating monomer units.
摘要:
An electrophotographic imaging member including a charge generating layer and a charge transport layer, the charge transport layer including a charge transporting small molecule dissolved or molecularly dispersed in a film forming charge transporting polymer comprising charge transporting moieties in the backbone of the film forming charge transporting polymer, the charge transporting moieties having a structure substantially identical to the structure of the charge transporting small molecule, the charge transporting small molecule having an ionization potential substantially identical to the ionization potential of the polymer, and the charge transport layer being substantially free of electrically inactive film forming binder. This imaging member may be employed in an electrophotographic imaging process.
摘要:
A flexible electrostatographic imaging member including at least one photographic imaging layer, a support layer, and an anticurl back layer having an exposed surface including a cross linked phenoxy resin at the exposed surface, the phenoxy resin being formed from a solution including cross linkable solvent soluble phenoxy resin containing hydroxyl groups attached to carbon atoms, an acid having a pKa less than about 3, a cross linking agent selected from the group including a formaldehyde generating cross linking agent, an alkoxylated cross linking agent, a methylolamine cross linking agent and mixtures thereof, and a liquid selected from the group including solvents, diluent and mixtures thereof.
摘要:
An electrophotographic imaging member including a support member, a charge generating layer and a charge transport layer, the charge transport layer including a cross linked matrix derived from a cross linkable aromatic polymer with substituent groups containing unsaturated carbon to carbon double bond, the substituent groups being free of any urethane linkage and attached to phenylene.
摘要:
A flexible electrophotographic imaging member comprising a substrate and at least one imaging layer comprising a first charge transport material, free of long chain alkyl ester groups or long chain alkyl carboxyl groups, and a small amount of a different second charge transporting material containing only one long chain alkyl ester group dissolved or molecularly dispersed in a film forming binder, the at least one imaging layer having been formed by drying a coating comprising a solution of the first transporting material and second charge transporting material and the film forming polymer binder in a mixture of a low volatility solvent and a high volatility solvent. A method for fabricating this imaging member is also disclosed.
摘要:
An electrophotographic imaging member includinga supporting substrate coated withat least one photoconductive layer, andan overcoating layer, the overcoating layer including aa hydroxy functionalized aromatic diamine anda hydroxy functionalized triarylamine dissolved or molecularly dispersed ina crosslinked acrylated polyamide matrix, the hydroxy functionalized triarylamine being a compound different from the polyhydroxy functionalized aromatic diamine, the crosslinked polyamide prior to crosslinking being selected from the group consisting of materials represented by the following Formulae I and II: ##STR1## wherein: n is a positive integer sufficient to achieve a weight average molecular weight between about 5000 and about 100,000,R is an alkylene group containing from 1 to 10 carbon atoms,between 1 and 99 percent of the R.sub.2 sites are ##STR2## wherein X is selected from the group consisting of --H (acrylate), --CH.sub.3 (methacrylate), alkyl and aryl, andthe remainder of the R.sub.2 sites are selected from the group consisting of --H, --CH.sub.2 OCH.sub.3, and --CH.sub.2 OH, and ##STR3## wherein: m is a positive integer sufficient to achieve a weight average molecular weight between about 5000 and about 100000,R and R.sub.1 are independently selected from the group consisting of alkylene units containing from 1 to 10 carbon atoms;between 1 and 99 percent of R.sub.3 and R.sub.4 are independently selected from the group consisting of ##STR4## wherein X is selected from the group consisting of hydrogen, alkyl, aryl and alkylaryl, wherein the alkyl groups contain 1 to 10 carbon atoms and the aryl groups contain 1 to 3 alkyl groups, y is an integer between 1 and 10, andthe remainder of the R.sub.3 and R.sub.4 groups are selected from the group consisting of --H, --CH.sub.2 OH, --CH.sub.2 OCH.sub.3, and --CH.sub.2 OC(O)--C(X).dbd.CH.sub.2.The overcoating layer is formed by coating. The electrophotographic imaging member may be imaged in a process.
摘要:
A conductive polymer composition selected from the group consisting ofa first composition includinga polymer containing halomethylated aromatic groups, anda charge transporting material selected from the group consisting ofat least one charge transport monomer containing arylamine groups,at least one charge transport polymer containing arylamine units in the main polymer chain,and mixtures thereof, anda second composition includingat least one monomer containing a halomethylated aromatic group,at least one charge transport monomer containing arylamine groups anda polymer binder, anda third composition including:at least one monomer containing a halomethylated aromatic group, andat least one charge transport polymer with arylamine units in the main polymer chain.The aforementioned compositions may be applied as coatings and used in high speed laser printing and related printing processes. These conductive polymeric compositions and processes therefor provide improved stability and a broad range of conductivities, manufacturing and compositional latitude, and dielectric strength.
摘要:
Disclosed is a migration imaging member comprising a substrate, a first softenable layer comprising a first softenable material and a first migration marking material contained at or near the surface of the first softenable layer spaced from the substrate, and a second softenable layer comprising a second softenable material and a second migration marking material. Also disclosed is a migration imaging process employing the aforesaid imaging member.
摘要:
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 electron transport material such as a fluorenylidene malonitrile derivative and a hole transport material such as a dihydroxy tetraphenyl benzadine containing polymer. These may be complexed to provide photoresponsivity, and/or a photoresponsive pigment or dye may also be included.
摘要:
A polyarylamine polymer represented by the following formula: ##STR1## wherein: n is between about 5 and about 5,000p is between about 5 and about 5,000X' and X" are independently selected from a group having bifunctional linkages, andQ is a divalent group derived from certain hydroxy terminated arylamine reactants.