Direct positive silver halide light-sensitive material
US4255511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Apr 4, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/48561
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A direct positive light-sensitive silver halide photographic material comprising a support having thereon a layer containing a compound represented by the formula (I): ##STR1## wherein R.sub.1 represents an aliphatic residue or an aromatic residue; R.sub.2 represents a hydrogen atom, an aliphatic residue, or an aromatic residue; X.sub.1 and X.sub.2, which may be the same or different, each represents a divalent aromatic residue; and Y represents --R--, --O--R or --S--R-- wherein R represents a divalent aliphatic residue and the O or S is bonded to X.sub.1. The compound is particularly effective in combination with a diffusible dye releasing dye image providing compound having an o-hydroxyarylsulfamoyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.