US 7,351,522 B2Granted

Concentrated processing composition for silver halide color paper and method of processing

AssigneeFUJIFILM Corporation

InventorKazuaki Yoshida

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Abstract

An object of the present invention is to provide a method of processing silver halide color paper that ensures (a) promptness such that finished prints can be handed at shop to customers, (b) small installation area for mini-labs, (c) processing solution stability capable of withstanding slack seasons, (d) normal image quality, (e) small replenishment solution amount and (f) inhibition of tar generation and sulfuration phenomenon occurrence. This object can be attained by a concentrated processing composition for color paper which has a concentrated processing composition for bleach replenishment of 3.0 or less in pH containing 0.3 mol/L or more of EDTA.Fe(III) ammonium, 0.3 mol/L or more of a sulfinic acid compound of specified structure and 0.5 mol/L or more of ammonium bromide and a concentrated processing composition for fixative replenishment of 4.0 or more in pH containing 0.7 mol/L of ammonium thiosulfate and 0.4 mol/L or more of ammonium sulfite, and which is used in a processing involving the steps of treatment in a color developer, bleaching treatment and fixing treatment, and a processing method using the concentrated processing composition for color paper.

Claims6

Dependent claims

A concentrated processing solution for silver halide color paper, which comprises as constituting parts:

a concentrated processing composition for bleach replenishment;
and
a concentrated processing composition for a replenisher having fixing ability,
wherein the concentrated processing composition for bleach replenishment and the concentrated processing composition for a replenisher having fixing ability comprise at least the following constituents respectively, and
the concentrated processing solution is for use in a processing comprising steps of treatment in a color developer, subsequent treatment in a bleaching solution and subsequent treatment in a solution having fixing ability:
Concentrated processing composition for bleach replenishment
EDTA•Fe(III)•ammonium
0.3
mol/L or more
Sulfinic acid compound
0.01
mol/L or more
represented by formula (I)
Ammonium bromide
0.5
mol/L or more
pH
3.0
or less
RSO2M Formula (I)
wherein R represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group or a hetero ring group;
and
M represents a hydrogen atom, an alkali metal atom, an ammonio group or a quaternary amino group;
and
Concentrated processing composition for a replenisher having fixing ability
Ammonium thiosulfate
0.7
mol/L or more
Ammonium sulfite
0.4
mol/L or more
pH
4.0
or more.

31 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/660,336Filed 15 Aug 2005
Priority: JP 2004-24055420 Aug 2004
Published: US 2007/0269753 A122 Nov 2007
Granted: 1 Apr 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G03C 7/42
Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials: bleach-fixing or agents therefor ;…
G03C 7/407
Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials: development processes or agents…
G03C 7/421
Bleach-fixing or agents therefor ; Desilvering processes: additives other than bleaching or fixing agents
G03C 5/266
Supplying of photographic processing chemicals; Preparation or packaging thereof: of solutions or concentrates