Method of producing photographic images by rapid processing
Abstract
Abstract Significant improvement in gradation, relative speed, and maximum density is obtained in a method of rapidly photographically developing an imagewise exposed light-sensitive photographic material comprising a hydrophobic film support and a rapidly developable silver halide emulsion layer wherein the silver halide consists of at least about 90 percent silver chloride, is developed with an aqueous processing solution in the presence of a photographic developing agent for a time of less than 15 seconds, provided at least one water permeable layer formed essentially of a hydrophilic colloid is interposed between the film support and the emulsion layer and in direct contact with the emulsion layer, the total weight of such water permeable layers being at least about 2 grams per square meter up to about 8 gm/sq. m. Preferably the colloid is proteinaceous and preferably the developed photographic material is passed in succession through stabilizing, fixing, and rinsing baths, remaining in contact with each less than about 15 seconds. An optimum time of contact for each processing step is about 2-8 seconds.
Inventors
- 👤 Emiel Alexander Hofman
Bibliographic Details
Claims Analysis
Total Claims: 11References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |