Photographic heat development process and auxiliary sheet suitable therein
US4770970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1986 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jun 18, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/402
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The heat development process using an integral color photographic recording material carrying, on a preferably transparent layer support, both an image receptor layer and light-sensitive layers of binder with silver halide and associated dye releasing compounds, optionally with a light-reflecting layer of pigment between the image receptor layer and the light-sensitive layers, may be carried out as a one-step development process in which silver halide development and color transfer take place at the same time if an auxiliary sheet containing a thermal development and diffusion promoting substance in a layer of binder is used. The thermal development and diffusion promoting agent is preferably liquid under normal conditions and dispersed in a microencapsulated form in the layer of binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.