EP 0226184 A2 19870624 - Nucleation development control agent for photographic silver halide materials and processes.
Title (en)
Nucleation development control agent for photographic silver halide materials and processes.
Title (de)
Keimentwicklungs-Steuermittel für photographische Silberhalogenidmaterialien und Verfahren.
Title (fr)
Agent de contrÔle pour le développement de germes dans des matériaux et procédés photographiques.
Publication
Application
Priority
US 81103385 A 19851219
Abstract (en)
A nucleation development control agent that is an isothiuronium compound or a free mercaptan aids nucleation development in a negative working photographic silver halide material comprising a nucleating agent. The nucleation development control agent helps increase image discrimination and helps reduce image development spread beyond unexposed grains in close proximity to exposed silver halide grains. The nucleation development control agent can be in this photographic material and or in an aqueous silver halide developer solution for use in nucleation development of the imagewise exposed photographic material.
IPC 1-7
IPC 8 full level
CPC (source: EP)
G03C 1/09 (2013.01); G03C 1/061 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0226184 A2 19870624; EP 0226184 A3 19881109; JP S62157025 A 19870713
DOCDB simple family (application)
EP 86117268 A 19861211; JP 30183986 A 19861219