Ultraviolet holdback of nonsilver photosensitive systems by incorporating therein certain organic additives

Claim 2

IN A NON-SILVER PHOTOSENSITIVE COMPOSITION COMPRISING: (1) AT LEAST ONE COLOR FORMING COMPOUND REPRESENTED BY THE GENERAL FORMULA

Claim 3

The composition of claim 1 in which the relative proportions of said color forming ethylene compound and said compound producing imagery having improved U.V. holdback is between 50:1 and 1:2.

Claim 4

at least one activator for said color forming compound, said activator being selected from the group consisting of (a) organic halogen compounds represented by the general formula Q-C-Hal3 wherein Q is selected from the group consisting of H, Cl, Br, I, alkyl, substituted alkyl, aryl, substituted aryl, aroyl, and arylalkyl; and each Hal represents a halogen atom selected from the group consisting of Cl, Br or I; (b) sulfur containing compounds represented by either R-SH or R-S-S-R wherein each R represents an aryl or heterocyclic ring; and (c) compounds containing both halogen and sulfur selected from the group consisting of sulfonyl and sulfenyl halides; the improvement which consists in the incorporation in said composition of (3) at least one organic compound which produces imagery having improved ultraviolet holdback, said compound being selected from the group consisting of heterocyclic compounds selected from the group consisting of acridine, phenothiazine, acridan, carbazole, N-vinylcarbazole, and benzolflavine; quinone compounds selected from the group consisting of naphthoquinones and 9,10 anthraquinones; and multifunctional aromatic hydroxy compounds selected from the group consisting of 1,2,4-trihydroxybenzene and 1,4,9,10-tetrahydroxy-9,10-dihydroanthracene.

Claim 5

at least one activator for said color forming compound, said activator being selected from the group consisting of (a) organic halogen compounds represented by the general formula Q-C-Hal3 wherein Q is selected from the group consisting of H, Cl, Br, I, alkyl, substituted alkyl, aryl, substituted aryl, aroyl, and arylalkyl; and each Hal represents a halogen atom selected from the group consisting of Cl, Br or I; (b) sulfur containing compounds represented by either R-SH or R-S-S-R wherein each R represents an aryl or heterocyclic ring; and (c) compounds containing both halogen and sulfur selected from the group consisting of sulfonyl and sulfenyl halides; the improvement which consists in the incorporation in said composition of (3) at least one organic compound which produces imagery having improved ultraviolet holdback, said compound being selected from the group consisting of heterocyclic compounds selected from the group consisting of acridine, phenothiazine, acridan, carbazole, N-vinylcarbazole, and benzolflavine; quinone compounds selected from the group consisting of naphthoquinones and 9,10 anthraquinones; and multifunctional aromatic hydroxy compounds selected from the group consisting of 1,2,4-trihydroxybenzene and 1,4,9,10-tetrahydroxy-9,10-dihydroanthracene.

Claim 6

AT LEAST ONE ACTIVATOR FOR SAID COLOR FORMING COMPOUND SAID ACTIVATOR BEING SELECTED FROM THE GROUP CONSISTING OF (A) ORGANIC HALOGEN COMPOUNDS REPRESENTED BY THE GENERAL FORMULA Q-C-HAL3 WHEREIN Q IS SELECTED FROM THE GROUP CONSISTING OF H, CL, BR, L, ALKYL, SUBSTITUTED ALKYL, ARYL, SUBSTITUTED ARYL, AROYL, AND ARYLALKYL, AND EACH HAL REPRESENTS A HALOGEN ATOM SELECTED FROM THE GROUP CONSISTING OF CL, BR OR I, (B) SULFUR CONTAINING COMPOUNDS REPRESENTED BY EITHER R-SH OR R-S-S-R WHEREIN EACH R REPRESENTS AN ARYL OR HETEROCYCLIC RING, AND (C) COMPOUNDS CONTAINING BOTH HALOGEN AND SULFUR SELECTED FROM THE GROUP CONSISTING OF SULFONYL AND SULFENYL HALIDES THE IMPROVEMENT WHICH CONSISTS IN THE INCORPORTION IN SAID COMPOSITION OF (3) AT LEAST ONE ORGANIC COMPOUND WHICH PRODUCES IMAGERY HAVING IMPROVED ULTRAVIOLET HOLDBACK, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF HETEROCYCLIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ACRIDINE, PHENOTHIAZINE, ACRIDAN, CARBAZOLE, N-VINYLCARBAZOLE, AND BENZOLFLAVINE, QUINONE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF NAPHTHOQUINONES AND 9,10 ANTHRAQUINONES, AND MULTIFUNCTIONAL AROMATIC HYDROXY COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF 1,2,4-TRIHYDROXYBENZENE AND 1,4,9.10-TETRAHYDROXY-9,10-DIHYDROAANTHRACENE.

Claim 7

AT LEAST ONE ACTIVATOR FOR SAID COLOR FORMING COMPOUND SAID ACTIVATOR BEING SELECTED FROM THE GROUP CONSISTING OF (A) ORGANIC HALOGEN COMPOUNDS REPRESENTED BY THE GENERAL FORMULA Q-C-HAL3 WHEREIN Q IS SELECTED FROM THE GROUP CONSISTING OF H, CL, BR, L, ALKYL, SUBSTITUTED ALKYL, ARYL, SUBSTITUTED ARYL, AROYL, AND ARYLALKYL, AND EACH HAL REPRESENTS A HALOGEN ATOM SELECTED FROM THE GROUP CONSISTING OF CL, BR OR I, (B) SULFUR CONTAINING COMPOUNDS REPRESENTED BY EITHER R-SH OR R-S-S-R WHEREIN EACH R REPRESENTS AN ARYL OR HETEROCYCLIC RING, AND (C) COMPOUNDS CONTAINING BOTH HALOGEN AND SULFUR SELECTED FROM THE GROUP CONSISTING OF SULFONYL AND SULFENYL HALIDES THE IMPROVEMENT WHICH CONSISTS IN THE INCORPORTION IN SAID COMPOSITION OF (3) AT LEAST ONE ORGANIC COMPOUND WHICH PRODUCES IMAGERY HAVING IMPROVED ULTRAVIOLET HOLDBACK, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF HETEROCYCLIC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ACRIDINE, PHENOTHIAZINE, ACRIDAN, CARBAZOLE, N-VINYLCARBAZOLE, AND BENZOLFLAVINE, QUINONE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF NAPHTHOQUINONES AND 9,10 ANTHRAQUINONES, AND MULTIFUNCTIONAL AROMATIC HYDROXY COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF 1,2,4-TRIHYDROXYBENZENE AND 1,4,9.10-TETRAHYDROXY-9,10-DIHYDROAANTHRACENE.

Claim 8

The composition of claim 1 in which the color forming compound is 1,1-bis(4-dimethylaminophenyl)-ethylene and the ultraviolet holdback compound is a quinone.

Claim 9

The composition of claim 3 wherein the quinone is a naphthoquinone.

Claim 10

The composition of claim 4 in which the naphthoquinone is 1, 2-naphthoquinone.

Claim 11

A photosensitive member comprising a support and a coating therein comprising the composition of claim 1.

Claim 12

The composition of claim 1 wherein the U.V. hold-back compound is acridan.

Claim 13

The composition of claim 1 wherein the U.V. hold-back compound is an anthraquinone.

Claim 14

The composition of claim 1 wherein the U.V. hold-back compound is acridine.