Claims
- 1. A photographic processing composition adapted for use with a silver diffusion transfer film unit which comprises an aqueous alkaline solution, a silver halide developing agent and surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 ethylene oxide units per hydrophobe wherein said hydrophobe is a fluorinated hydrocarbon or an organo silicone.
- 2. The composition of claim 1 wherein said film unit comprises an elongated strip adapted to be wound upon itself.
- 3. The composition of claim 1 wherein said surfactant is present at a level of about 0.25 to 5.0% by weight of active material based on the weight of the processing composition.
- 4. The composition of claim 3 wherein said surfactant is present at a level of about 0.5% by weight based on the weight of said composition.
- 5. The composition of claim 1 wherein said surfactant contains an average of about 11 units of ethylene oxide units per hydrophobe.
- 6. The composition of claim 1 wherein said silver halide developing agent is tetramethyl reductic acid.
- 7. The composition of claim 1 which includes a silver halide solvent.
- 8. The composition of claim 7 wherein said silver halide solvent is 2-methylthiomethyl-4,6-dihydroxypyrimidine.
- 9. The composition of claim 1 which includes a polymeric thickening agent.
- 10. The composition of claim 1 wherein said film unit is an additive color diffusion transfer film unit.
- 11. A photographic processing composition adapted for use with an additive color diffusion transfer film unit which comprises an aqueous sodium hydroxide solution, tetramethyl reductic acid, 2-methylthiomethyl-4,6-dihydroxy-pyrimidine, hydroxyethyl cellulose and a nonionic surfactant of the formula
- CF.sub.3 (CF.sub.2).sub.m (CH.sub.2).sub.2 ---O(CH.sub.2 CH.sub.2 O).sub.n H
- wherein said surfactant is a mixture and n averages about 11 and m is 5, 7 and 9.
- 12. The method which comprises contacting an exposed silver diffusion transfer film unit which comprises a support, carrying on one surface, a layer comprising silver-precipitating nuclei, and a photosensitive silver halide layer; with a photographic processing composition comprising an aqueous alkaline solution, a silver halide developing agent and a surfactant comprising a hydrophobe and a polyethylene oxide portion containing an average of about 5-25 units of ethylene oxide per hydrophobe wherein said hydrophobe is a fluorinated hydrocarbon or an organo silicone.
- 13. The method of claim 12 wherein said film unit comprises an elongated strip adapted to be wound upon itself and which includes the step of winding said film unit upon itself.
- 14. The method of claim 12 wherein said surfactant is present at a level of about 0.25 to 5.0% active material by weight based on the weight of said processing composition.
- 15. The method of claim 14 wherein said surfactant is present at a level of about 0.5% by weight.
- 16. The method of claim 12 wherein said surfactant contains an average of about 11 units of ethylene oxide per hydrophobe.
- 17. The method of claim 12 wherein said developing agent is tetramethyl reductic acid.
- 18. The method of claim 12 wherein said processing composition includes a silver halide solvent.
- 19. The method of claim 18 wherein said silver halide solvent is 2-methylthiomethyl-4,6-dihydroxypyrimidine.
- 20. The method of claim 12 wherein said film unit includes an additive color screen.
- 21. The method of claim 12 wherein said silver precipitating nuclei are noble metal nuclei.
- 22. The method of claim 21 wherein said noble metal nuclei are palladium nuclei.
- 23. The method of claim 12 wherein said processing composition includes a polymeric thickener.
- 24. The method of claim 23 wherein said polymeric thickener is hydroxyethyl cellulose.
CROSS REFERENCE TO OTHER APPLICATIONS
This application is a continuation-in-part of copending application Ser. No. 032,887, filed Apr. 24, 1979, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
577327 |
Jun 1959 |
CAX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
32887 |
Apr 1979 |
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