EP 0506876 A4 19940810 - SUPER-HIGH CONTRAST SILVER HALIDE MATERIAL
Title (en)
SUPER-HIGH CONTRAST SILVER HALIDE MATERIAL
Publication
Application
Priority
- US 45284789 A 19891218
- US 9007454 W 19901217
Abstract (en)
[origin: WO9109345A1] A silver halide photographic material and a method for processing the photographic material to form a super high contrast negative image are disclosed. The photographic material comprises a radiation-sensitive silver halide grains capable of forming a surface latent image, a binder, a dot quality-promoting amount of a hydrazine or hydrazide compound and a pepper-reducing effective amount of a compound of formula (II), wherein R'1 is selected from the group consisting of benzothiazole, quinoline, indolenine, nitrobenzothiazole, benzotriazole and rhodanine, each of which may be substituted or unsubstituted, and m is an integer between 0 and 6 inclusive.
IPC 1-7
IPC 8 full level
CPC (source: EP)
G03C 1/061 (2013.01); G03C 1/34 (2013.01)
Citation (search report)
- [Y] DE 376680 C 19230601 - WILHELM JACOB
- [Y] "High contrast development of photographic elements", RESEARCH DISCLOSURE, vol. 231, no. 30, 10 July 1983 (1983-07-10), HAVANT GB, pages 251
- See references of WO 9109345A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9109345 A1 19910627; CA 2071499 A1 19910619; EP 0506876 A1 19921007; EP 0506876 A4 19940810; JP H05502739 A 19930513
DOCDB simple family (application)
US 9007454 W 19901217; CA 2071499 A 19901217; EP 91902840 A 19901217; JP 50326790 A 19901217