Claims
- 1. A photographic element comprised of a substrate and a photosensitive coating on said substrate, said coating comprising
- (A) the polycondensation product of 3-methoxy-4-diazodiphenyl amine sulfate and 4,4'-bis-methoxy methyldiphenyl ether, precipitated as methane sulfonate; and,
- (B) the polycondensation product of 3-methoxy-4-diazodiphenyl amine sulfate and 4,4'-bis-methoxy methyldiphenyl ether, precipitated as mesitylene sulfonate, and
- (C) at least one colorant: and
- (D) at least one water soluble polymeric binding resin; and wherein
- the ratio of component A to component B is in the range of from about 1:3.5 to 3.5:1; and the amount of total diazo in the coating is in the range of from about 6% to about 60% by weight; and the amount of colorant is in the range of from about 3% to about 60% by weight; and the amount of resin is in the range of from about 33% to about 87% by weight; and wherein the photosensitive coating, after light exposure, is capable of being developed with water alone or with light rubbing.
- 2. The element of claim 1 wherein said binding resin comprises polyvinyl pyrrolidone.
- 3. The element of claim 1 wherein said colorant comprises one or more dyes selected from the group consisting of Victoria Pure Blue FGA, Rhodamine FB and Calconize Yellow.
- 4. The element of claim 2 wherein said colorant comprises one or more dyes selected from the group consisting of Victoria Pure Blue FGA, Rhodamine FB and Calcozine Yellow.
- 5. The element of claim 1 wherein the ratio of component A to component B ranges from about 1:1 to 1:3.5.
- 6. The element of claim 1 wherein the ratio of component B to component A ranges from about 1:1 to 1:3.5.
- 7. The element of claim 1 wherein the total amount of diazo ranges from about 6% to about 60% of the dry coating composition.
- 8. The element of claim 1 wherein the amount of colorant ranges from about 3% to 60% of the dry coating composition.
- 9. The element of claim 1 wherein the amount of resin ranges from about 33% to 87% of the dry coating composition.
- 10. The element of claim 2 wherein the average molecular weight of said polyvinyl pyrrolidone is in the range of from about 60,000 to about 300,000.
- 11. The element of claim 4 wherein the average molecular weight of said polyvinyl pyrrolidone is in the range of from about 60,000 to about 300,000.
- 12. The composition of claim 1 wherein said substrate is transparent.
- 13. The composition of claim 1 wherein said substrate comprises polyethylene terephthalate.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation in part of co-pending U.S. patent application Ser. No. 06/384,457 filed June 3, 1983, abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (2)
Number |
Date |
Country |
56-121031 |
Sep 1981 |
JPX |
1312926 |
Apr 1973 |
GBX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
384457 |
Jun 1983 |
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