Light-sensitive silver halide photographic element
US6534255B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1997 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jul 1, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light-sensitive silver halide photographic element comprising a support and at least one hydrophilic colloid layer comprising a binder and a vinylsulfonyl type hardener coated thereon, wherein at least one of said hydrophilic colloid layers is a silver halide emulsion layer containing tabular silver halide grains having an average diameter:thickness ratio of at least 3:1, characterized in that said tabular silver halide grains are chemically sensitized by at least one gold sensitizer and at least one thiosulfonate sensitizer in the presence of a palladium compound added during chemical sensitization.The silver halide photographic elements of the present invention can be advantageously developed in hardener free developer and used in high temperature rapid processing in automatic processors which include transporting rollers, have good photographic and physical characteristics and are free from surface defects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.