EP 0464682 A1 19920108 - Photographic element.
Title (en)
Photographic element.
Title (de)
Photographisches Element.
Title (fr)
Elément photographique.
Publication
Application
Priority
US 54517290 A 19900628
Abstract (en)
Photographic elements are described having a silver halide emulsion layer, a 2-equivalent 5-pyrazolone coupler in reactive association with said silver halide emulsion, and a competitor for oxidized developer in reactive association with said coupler having the formula: <CHEM> wherein R<1> represents an electron donating group, R<2> represents hydrogen, alkyl, alkoxy, aryl, aryloxy, aralkyl or amino of the formula -NHR<3>, where R<3> is phenyl or benzyl, with the proviso that at least one of the substituents R<1> and R<2> (a) represents (1) a ballast group of sufficient size as to render the hydrazide compound non-diffusible in the photographic element prior to development in alkaline processing solution and (b) comprises a polar group, and n is 0, 1 or 2. ed h
IPC 1-7
IPC 8 full level
G03C 1/06 (2006.01); G03C 5/50 (2006.01); G03C 7/30 (2006.01); G03C 7/38 (2006.01); G03C 7/392 (2006.01); G03C 7/407 (2006.01)
CPC (source: EP)
G03C 7/3012 (2013.01); G03C 7/39236 (2013.01)
Citation (search report)
- [Y] EP 0338785 A2 19891025 - EASTMAN KODAK CO [US]
- [A] EP 0118087 A2 19840912 - FUJI PHOTO FILM CO LTD [JP]
- [AD] US 4791051 A 19881213 - SAKANOUE KEI [JP], et al
- [A] DE 3516945 A1 19851114 - FUJI PHOTO FILM CO LTD [JP]
- [Y] PATENT ABSTRACTS OF JAPAN vol. 11, no. 297 (P-592)(2654), 04.07.1987; & JP - A - 6227731 (FUJI) 05.02.1987
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 91110677 A 19910627; JP 15810491 A 19910628