Method for making improved imaging elements suitable for use in silver salt diffusion transfer process
US5597676A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Aug 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a method for obtaining an imaging element suitable for use in a silver salt diffusion transfer process by the steps of: PA1 preparing an image receiving element by coating the anodized surface of an aluminum foil with an image-receiving layer comprising physical development nuclei, PA1 preparing a photosensitive layer packet by coating a temporary base with at least one photosensitive silver halide emulsion layer, PA1 pressing the thus formed photosensitive layer packet with its photosensitive silver halide emulsion coated side against said image receiving layer, which has been wet with an aqueous moistening liquid, and PA1 optionally removing said temporary base, characterized in that between said temporary base and said at least one photosensitive silver halide emulsion layer a barrier layer is present which is substantially free of developing agents, is substantially unhardened, comprises one or more hydrophilic binders in an amount of at least 0.25 g/m.sup.2 and is in water permeable relationship with said image receiving layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.