EP 0856771 A1 19980805 - Photographic image-forming process
Title (en)
Photographic image-forming process
Title (de)
Photographische Bildherstellungsverfahren
Title (fr)
Procédé de formation d'image photographique
Publication
Application
Priority
EP 97200273 A 19970131
Abstract (en)
A process for the development of an imagewise exposed photographic material having at least one silver halide layer which comprises forming an image therein in a solution which contains a developing agent, which solution is replenished wherein: the process is carried out in an apparatus comprising at least one processing tank in which the ratio of the tank volume to maximum area of material which can be accommodated in the tank (i.e. maximum path length times width of material) is less than 25 dm<3>/m<2>, substantially all the replenishers are added as solids direct to said developer solution together with additional water which may contain a minor amount of replenisher chemicals, and wherein the average residence time of the processing solution in the developing tank defined by the formula: <MATH> where V is the volume of the processing tank (litres), R is the replenishment rate (litres/m<2>), T is the transport speed (m<2>/min) and U is the percent utilisation as the percentage of a working day (8 hours) that the processor is running, is less than the useful lifetime of the solution, said useful lifetime being the time at 35 DEG C for which the Dmax values for red, green and blue (or the silver image Dmax of a black-and-white material) remain at or above 80% of the value(s) produced by a freshly prepared solution. <IMAGE>
IPC 1-7
IPC 8 full level
G03C 5/29 (2006.01); G03C 5/31 (2006.01); G03D 3/06 (2006.01); G03D 13/00 (2006.01); G03C 5/305 (2006.01); G03C 7/407 (2006.01); G03C 7/413 (2006.01)
CPC (source: EP)
G03C 5/29 (2013.01); G03C 5/31 (2013.01); G03D 3/065 (2013.01); G03D 13/007 (2013.01); G03C 5/265 (2013.01); G03C 5/305 (2013.01); G03C 7/407 (2013.01); G03C 7/413 (2013.01); G03C 2200/21 (2013.01)
Citation (applicant)
- US 5436118 A 19950725 - CARLI JEREL R [US], et al
- US 5294956 A 19940315 - EARLE ANTHONY [GB]
- US 5179404 A 19930112 - BARTELL ROGER E [US], et al
- US 5270762 A 19931214 - ROSENBURGH JOHN H [US], et al
- EP 0559025 A1 19930908 - EASTMAN KODAK CO [US]
- EP 0559026 A1 19930908 - EASTMAN KODAK CO [US]
- EP 0559027 A1 19930908 - EASTMAN KODAK CO [US]
- WO 9210790 A1 19920625 - KODAK LTD [GB], et al
- WO 9217819 A1 19921015 - KODAK LTD [GB], et al
- WO 9304404 A1 19930304 - KODAK LTD [GB], et al
- WO 9217370 A1 19921015 - KODAK LTD [GB], et al
- WO 9119226 A1 19911212 - KODAK LTD [GB], et al
- WO 9112567 A1 19910822 - KODAK LTD [GB], et al
- WO 9207302 A1 19920430 - KODAK LTD [GB], et al
- WO 9300612 A1 19930107 - KODAK LTD [GB], et al
- WO 9207301 A1 19920430 - KODAK LTD [GB], et al
Citation (search report)
- [DY] US 5436118 A 19950725 - CARLI JEREL R [US], et al
- [Y] GB 2302596 A 19970122 - KODAK LTD [GB]
- [Y] US 4311574 A 19820119 - ISHIKAWA TAKATOSHI
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97200273 A 19970131