EP 0295507 A3 19890607 - COLOR PHOTOGRAPHIC HEAT-DEVELOPMENT PROCESS
Title (en)
COLOR PHOTOGRAPHIC HEAT-DEVELOPMENT PROCESS
Publication
Application
Priority
DE 3719880 A 19870613
Abstract (en)
[origin: JPS644740A] PURPOSE: To obtain high storage stability by incorporating a combination of specified compds. into a photosensitive first sheet material. CONSTITUTION: When a color image is formed in a photographic material containing a salt of an org. strong base and a weak acid by a dye diffusing method, a photosensitive first sheet material contains a combination of compds. expressed by formulae I and II. In formula I, R<1> is hydrogen, 1-6C alkyl group, halogen, hydroxy group, alkoxy group or substituents to form a condensed benzene ring. In formula II, R<2> is a group which can be cleaved in the developing process of the photosensitive material, R<3> is hydrogen, halogen, 1-4C alkyl group, alkoxy, carboxyl, carblakoxy, carbon amide or sulfone amide. Thereby, the obtd. material shows good Dmin /Dmax and high stability after stored.
IPC 1-7
IPC 8 full level
G03C 1/498 (2006.01); G03C 8/40 (2006.01)
CPC (source: EP US)
G03C 1/49845 (2013.01 - EP US); G03C 8/408 (2013.01 - EP US)
Citation (search report)
- [YD] DE 3526315 A1 19860130 - FUJI PHOTO FILM CO LTD [JP]
- [YD] EP 0187343 A2 19860716 - FUJI PHOTO FILM CO LTD [JP]
- [Y] GB 2119945 A 19831123 - KONISHIROKU PHOTO IND
- [Y] GB 2156091 A 19851002 - KONISHIROKU PHOTO IND
- [Y] EP 0160996 A2 19851113 - FUJI PHOTO FILM CO LTD [JP]
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0295507 A2 19881221; EP 0295507 A3 19890607; DE 3719880 A1 19890105; JP S644740 A 19890109; US 4840871 A 19890620
DOCDB simple family (application)
EP 88108846 A 19880603; DE 3719880 A 19870613; JP 13858488 A 19880607; US 20184088 A 19880603