Xerox Corporation

James M Pearson

John F Yanus

William W Limburg

David J Williams

Milan Stolka

Damodar M Pai

Dale S Renfer

Nero R Lindblad

Franklin D Saeva

Stephen Strella

Moshe Levy

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 one electron from the hole transporting compound.

Semiconductive organic compositions

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 photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises a polycarbonate resin containing from about 25 to about 75 percent by weight of one or more of a compound having a general formula: ##STR1## wherein R is selected from the group consisting of an alkyl group having from 1 to about 4 carbon atoms and chlorine in the ortho, meta or para position. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.

Imaging system with a diamine charge transport material in a

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 photogenerated holes into a contiguous charge transport layer. The charge transport layer comprises an electrically inactive organic resinous material containing from about 10 to about 75 percent by weight of: ##STR1## R.sub.1 is selected from the group consisting of hydrogen (ortho) CH.sub.3, (meta) CH.sub.3, (para) CH.sub.3, and R.sub.2 is selected from the group consisting of hydrogen, (ortho) CH.sub.3, (meta) CH.sub.3, and (para) CH.sub.3. The charge transport layer while substantially non-absorbing in the spectral region of intended use is 'active' in that it allows injection of photogenerated holes from the photoconductive layer, and allows these holes to be transported through the charge transport layer. This structure may be imaged in the conventional xerographic mode which usually includes charging, exposure to light and development.

Aromatic amino charge transport layer in electrophotography

Photoconductive compositions comprising an insulating polymeric matrix and a compound of the formula ##STR1## wherein R is --H or --CN;

1-Tricyanoinylpyrene

Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: ##STR1## wherein X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl Is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 10.sup.4). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.

Process for preparation of 2-anthryl and substituted 2-anthryl

Photoconductive composition comprising an insulating polymeric matrix and a compound of the formula ##STR1## WHEREIN Ar is anthryl; naphthyl; pyrenyl; indolyl; N-alkyl 2-CARBAZYL; JULOLIDINYL; AND THE SUBSTITUTED ANALOGUES THEREOF, WHEREIN SAID SUBSTITUENTS ARE CAPABLE OF RELEASING ELECTRONS TO THE RELATIVELY ELECTRON DEFICIENT CENTERS WITHIN THE COMPOUND;

Photoconductive composition, and element

Photoconductive composition comprising an insulating polymeric matrix and a compound of the formula ##STR1## wherein R is --H or --CN;

Photoconductive composition containing a tricyanopyrene, article and

Electrostatographic imaging member and process using anthracene

Disclosed is a composition of matter characterized by the structural formula: ##STR1## wherein R.sub.1 is hydrogen or methyl and R.sub.2, R.sub.3 and R.sub.4 are hydrogen, halogen substituted or unsubstituted alkyl groups containing 1 to 4 carbon atoms. Also disclosed are vinyl polymers of the above compounds.

2-Vinyl-fluorenone and derivatives thereof

Disclosed is a composition of matter characterized by the structural formula: ##STR1## wherein R.sub.1 is hydrogen or methyl and R.sub.2, R.sub.3 and R.sub.4 are hydrogen, halogen or aliphatic groups containing 1 to 4 carbon atoms. Also disclosed are vinyl polymers of the above compounds.

Polymers of 2-vinyl-fluorenone and derivatives thereof

Photoconductive composition comprising an insulating polymeric matrix and a compound of the formula ##STR1## wherein R is hydrogen or nitrile; and R', R' and R'' are independently selected from an aliphatic hydrocarbon radical having from about 1 to about 10 carbon atoms; phenyl; or substituted phenyl, said phenyl substituents being capable of releasing electrons to relatively electron deficient centers within the compound; amino; diarylamino; dialkylamino or alkoxy; and n can range from 0 up to the potential number of positions of substitution on the aromatic ring system. These compositions have good spectral response in the visible region of the electromagnetic spectrum and are suitable for use in electrostatographic imaging members and methods.

Photoconductive composition, article and process

An electrophotographic developer composition is provided with a lubricating component comprising particulate, cross-linked polyvinylidene fluoride. The polyvinylidene fluoride is cross-linked by exposure to a small dosage of high energy radiation.

Electrophotographic developer with polyvinylidene fluoride additive

Ambipolar photoconductive composition comprising the product of the in situ polymerization of at least one cyclic compound of the formula: ##EQU1## wherein Ar is a polyaromatic nucleus selected from the group consisting of diradicals of naphthalene, anthracene, pyrene and carbazole;

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Webster, NY, United States of America

James M Pearson