Xerographic plate containing photoinjecting perylene pigments

Claim 2

AN ELECTROPHOTOGRAPHIC PLATE HAVING A PHOTOERCEPTOR BINDER LAYER CONSISTING ESSENTIALLY OF PHOTOSENSITIVE PARTICLES IN AN AMOUNT OF FROM ABOUT 0.1 TO 5% BY VOLUME OF SAID BINDER, SAID BINDER AND PARTICLES BEING COMPATIBLE SO AS TO SUPPORT EFFICIENT PHOTOGENERATED CHARGE INJECTION FROM SAID PHOTOSENSITICE PARTICLES, SAID PHOTOSENSITIVE PARTICLES COMPRISIN A PIGMENT SELECTED FROM THE CLASS OF PERYLENE PIGMENTS OF THE FROMULA

Claim 3

An electrophotographic plate having at least two adjacent layers, said layers consisting essentially of unoriented photosensitive layer overlaying a substrate member with a layer of an active transport material overlaying said photosensitive layer and in contact therewith, both of said layers being compatible so as to support efficient photogenerated charge injection from said photosensitive layer, said photosensitive layer being a photoinjecting pigment selected from the class of perylene pigments of the formula

Claim 4

An electrophotographic plate having at least two adjacent layers, said layers consisting essentially of unoriented photosensitive layer overlaying a substrate member with a layer of an active transport material overlaying said photosensitive layer and in contact therewith, both of said layers being compatible so as to support efficient photogenerated charge injection from said photosensitive layer, said photosensitive layer being a photoinjecting pigment selected from the class of perylene pigments of the formula

Claim 5

An electrophotographic plate having a photoreceptor binder layer consisting essentially of photosensitive particles dispersed in an unoriented fashion in an active transport binder in an amount of from about 0.1 to 5% by volume of of said binder, said binder and particles being compatible so as to support efficient photogenerated charge injection from said photosensitive particles, said photosensitive particles comprising a photoinjecting pigment selected from the class of perylene pigments prepared by reacting 3,4,9,10-perylene-tetracarboxylic acid with a material selected from the group consisting of amines, amides, and hydrazine compounds, and said active transport binder consisting essentially of a transport material selected from the group consisting of carbazole, N-ethyl carbazole, N-isopropyl carbazole, N-phenylcarbazole, tetraphenylpyrene, 1-methylpyrene, perylene, chrysene, fluorene, flourenone, anthracene, tetracene, tetraphene, 2-phenylnaphthalene, azapyrene, 1-ethylpyrene, acetyl pyrene, 2,3-benzochrysene, 3,4-benzopyrene, 1,4-bromopyrene, phenyl indole, polyvinyl carbazole, polyvinyl pyrene, polyvinyl tetracene, polyvinyl perylene, polyvinyl tetraphene, 2,4,7-trinitro-9-fluorenone, 2,4,5,7-tetranitrofluorenone, dinitroanthracene, dinitroacridene, tetracyanopyrene, and dinitroanthraquinone.

Claim 6

An electrophotographic plate having a photoreceptor binder layer consisting essentially of photosensitive particles dispersed in an unoriented fashion in an active transport binder in an amount of from about 0.1 to 5% by volume of of said binder, said binder and particles being compatible so as to support efficient photogenerated charge injection from said photosensitive particles, said photosensitive particles comprising a photoinjecting pigment selected from the class of perylene pigments prepared by reacting 3,4,9,10-perylene-tetracarboxylic acid with a material selected from the group consisting of amines, amides, and hydrazine compounds, and said active transport binder consisting essentially of a transport material selected from the group consisting of carbazole, N-ethyl carbazole, N-isopropyl carbazole, N-phenylcarbazole, tetraphenylpyrene, 1-methylpyrene, perylene, chrysene, fluorene, flourenone, anthracene, tetracene, tetraphene, 2-phenylnaphthalene, azapyrene, 1-ethylpyrene, acetyl pyrene, 2,3-benzochrysene, 3,4-benzopyrene, 1,4-bromopyrene, phenyl indole, polyvinyl carbazole, polyvinyl pyrene, polyvinyl tetracene, polyvinyl perylene, polyvinyl tetraphene, 2,4,7-trinitro-9-fluorenone, 2,4,5,7-tetranitrofluorenone, dinitroanthracene, dinitroacridene, tetracyanopyrene, and dinitroanthraquinone.

Claim 7

The electrophotographic plate of claim 3 in which the perylene pigment is that prepared by the reaction of the 3,4,9, 10-perylenetetracarboxylic acid with amines.

Claim 8

The electrophotographic plate of claim 4 in which the amine is p-chloroaniline.

Claim 9

The electrophotographic plate of claim 4 in which the amine is p-methoxyaniline.

Claim 10

An electrophotgraphic plate having at least two adjacent layers said layers consisting essentially of an unoriented photosensitive layer overlaying a substrate member, with a layer of an active transport material overlaying said photosensitive layer and in contact therewith both of said layers being compatible so as to support efficient photogenerated charge injection from said photosensitive layer, said photosensitive layer comprising a photoinjecting pigment selected from the class of perylene pigments prepared by reacting 3,4,9,10-perylenetetracarboxylic acid with a material selected from the group consisting of amines, amides and hydrazine compounds, and said active transport layer consisting essentially of a transport material selected from the group consisting of carbazole, N-ethyl carbazole, N-isopropyl carbazole, N-phenylcarbazole, tetraphenylpyrene, 1-methylpyrene, perylene, chrysene, fluorene, fluorenone, anthracene, tetracene, tetraphene, 2-phenylnaphthalene, azapyrene, 1-ethylpyrene, acetyl pyrene, 2,3-benzochrysene, 3,4-benzopyrene, 1,4-bromopyrene, phenyl indole, polyvinyl carbazole, polyvinyl pyrene, polyvinyl tetracene, polyvinyl perylene, pOlyvinyl tetraphene, 2,4,7-trinitro-9-fluorenone, 2,4,5,7-tetranitrofluorenone, dinitroanthracene, dinitroacridene, tetracyanopyrene, and dinitroanthraquinone.

Claim 11

An electrophotgraphic plate having at least two adjacent layers said layers consisting essentially of an unoriented photosensitive layer overlaying a substrate member, with a layer of an active transport material overlaying said photosensitive layer and in contact therewith both of said layers being compatible so as to support efficient photogenerated charge injection from said photosensitive layer, said photosensitive layer comprising a photoinjecting pigment selected from the class of perylene pigments prepared by reacting 3,4,9,10-perylenetetracarboxylic acid with a material selected from the group consisting of amines, amides and hydrazine compounds, and said active transport layer consisting essentially of a transport material selected from the group consisting of carbazole, N-ethyl carbazole, N-isopropyl carbazole, N-phenylcarbazole, tetraphenylpyrene, 1-methylpyrene, perylene, chrysene, fluorene, fluorenone, anthracene, tetracene, tetraphene, 2-phenylnaphthalene, azapyrene, 1-ethylpyrene, acetyl pyrene, 2,3-benzochrysene, 3,4-benzopyrene, 1,4-bromopyrene, phenyl indole, polyvinyl carbazole, polyvinyl pyrene, polyvinyl tetracene, polyvinyl perylene, pOlyvinyl tetraphene, 2,4,7-trinitro-9-fluorenone, 2,4,5,7-tetranitrofluorenone, dinitroanthracene, dinitroacridene, tetracyanopyrene, and dinitroanthraquinone.

Claim 12

The electrophotographic plate of claim 7 in which the perylene pigment is that prepared by the reaction of the 3,4,9, 10-perylene tetracarboxylic acid with amines.

Claim 13

The electrophotographic plate of claim 8 in which the amine is p-chloroaniline.

Claim 14

The electrophotographic plate of claim 8 in which the amine is p-methoxyaniline.

Claim 15

The electrophotgraphic plate of claim 7 in which the perylene single layer has a thickness of from about 0.05 to 20 microns and the active transport overlayer has a thickness of from about 5 to 100 microns.

Claim 16

The electrophotographic plate of claim 7 in which the ratio of the active transport material layer to the photoconductive layer is from about 2:1 to 200:1.

Claim 19

The method of claim 13 which further includes developing said latent image to make it visible.

Claim 20

The method of claim 13 in which the substrate is substantially transparent and exposure is carried out through said substrate.

Claim 23

The method of claim 16 which further includes developing said latent image to make it visible.

Claim 24

The method of claim 16 in which the substrate is substantially transparent and exposure is carried out through said substrate.

Claim 25

The electrophotographic plate of claim 9 in which the active transport material consists essentially of polyvinyl carbazole.

Claim 26

The electrophotographic plate of claim 10 in which the active transport material consists essentially of polyvinyl carbazole.