Claims
- 1. A film adapted for the production of a positive azo dye image and transmitting no greater than about 20% of electromagnetic radiation in the ultraviolet range consisting essentially of a translucent or transparent base,
- a benzidine yellow dye coating one side of said base,
- said benzidine yellow dye being one which absorbs electromagnetic radiation in the range of 3,500 to 5,500 angstroms and a two component diazotype coating comprising a light-sensitive diazonium salt, an azo coupler and an acidic stabilizer, said diazotype coating being coated upon said dye or upon the side of said base opposite from the side coated with said dye.
- 2. A film according to claim 1 wherein said positive azo dye image is formed from a blue azo dye.
Parent Case Info
This is a division, of application Ser. No. 540,426 filed Jan. 13, 1975, now abandoned, which is a continuation-in-part of application Ser. No. 324,727, filed Jan. 18, 1973, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
469,194 |
Nov 1950 |
CA |
38-12084 |
Jul 1963 |
JA |
492,795 |
Sep 1938 |
UK |
645,825 |
Nov 1950 |
UK |
Non-Patent Literature Citations (2)
Entry |
Dinaburg, M. S., "Photosensitive Diazo Cpds", The Focal Press, 1964, pp. 145-147. |
Kosar, J., "Light-Sensitive Systems", J. Wiley & Sons, 1965, pp. 197-199. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
540426 |
Jan 1975 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
324727 |
Jan 1973 |
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