Title:
【発明の名称】アスコルビン酸誘導体を含有する写真現像溶液
Document Type and Number:
Japanese Patent JP3061472
Kind Code:
B2
Abstract:
A photographic developing solution for immersion development is disclosed showing a pH of at least 12.0 and containing more than 0.4 moles/liter of a sugar derivative, or an alkali metal salt thereof, corresponding to general formula (I) : wherein X represents an oxygen atom or an imino group, and n represents a positive integer from 1 to 4, and R represents a hydroxy group when n is 1, and R represents a hydroxy group or a hydrogen atom when n is 2 to 4. Preferred sugar derivatives according to the present invention are 1-ascorbic acid and iso-ascorbic acid. In a most preferred embodiment there are substantially no other developing agents and no sulphite ions present. When developing a graphic arts photographic material lith quality is obtained. The disposal of depleted solutions can be performed in an ecologically safe way.
Inventors:
Pascal Franc Meuille
Peter Marcel Villan
Gino Luc de Rick
Peter Marcel Villan
Gino Luc de Rick
Application Number:
JP5972992A
Publication Date:
July 10, 2000
Filing Date:
February 13, 1992
Export Citation:
Assignee:
AGFA-GEVAERT NAAMLOZE VENNOOTSCHAP
International Classes:
G03C5/29; G03C5/30; G03C5/305; (IPC1-7): G03C5/30; G03C5/305
Domestic Patent References:
| JP4270343A | ||||
| JP59191035A | ||||
| JP5051731A |
Other References:
【文献】米国特許3386824(US,A)
Attorney, Agent or Firm:
Mitsuo Adachi (1 outside)