Global Patent Index - EP 0660175 B1

EP 0660175 B1 20000322 - Control of replenishment during photographic development

Title (en)

Control of replenishment during photographic development

Title (de)

Steuerung der Nachfüllung und Regenerierung während der photographischen Entwicklung

Title (fr)

Contrôle du remplissage pendant le développement photographique


EP 0660175 B1 20000322 (EN)


EP 94119119 A 19941205


US 16842293 A 19931222

Abstract (en)

[origin: EP0660175A2] An improved developer and associated replenisher is provided which can be analyzed in a single non-invasive measurement. One advantage of the improved developer is the ability to indirectly measure the activity of the developer and replenisher and to determine if the solutions are properly prepared. These and other advantages are provided in a system for converting an image-wise exposed silver halide photographic film to a viewable image comprising: a development means wherein said image-wise exposed silver halide is reduced to elemental silver with subsequent depletion of said development means; a fixing means wherein unexposed silver halide is removed from said photographic film; a replenishing means for said development means wherein said replenishing means comprises at least two titratably distinct components.

IPC 1-7

G03C 5/31; G03C 5/30

IPC 8 full level

G03C 5/29 (2006.01); G03C 5/30 (2006.01); G03C 5/305 (2006.01); G03C 5/31 (2006.01)

CPC (source: EP)

G03C 5/30 (2013.01); G03C 5/31 (2013.01)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0660175 A2 19950628; EP 0660175 A3 19951206; EP 0660175 B1 20000322; DE 69423587 D1 20000427; DE 69423587 T2 20010222; JP H07199418 A 19950804

DOCDB simple family (application)

EP 94119119 A 19941205; DE 69423587 T 19941205; JP 31784394 A 19941221