Method for preparing a ready-to-use photographic bleaching solut

Details Method for preparing a ready-to-use photographic bleaching solut Method for preparing a ready-to-use photographic bleaching solut

1996-04-29

1998-05-19

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Bleach or intensification

430393, 430460, G03C 742

Patent

active

057534233

ABSTRACT:
A ready-to-use bleaching or bleach-fixing solution can be prepared by mixing an aqueous solution of succinic acid, maleic acid or malic acid, and an aminopolycarboxylic acid ligand, adding a ferric salt to form a ferric ligand chelate, and adding a chemical base, such as ammonia, to provide a final pH of from 2.5 to 5.5. optionally, a portion of the chemical base can be added before the addition of the ferric salt.

REFERENCES:
patent: 4328306 (1982-05-01), Idota et al.
patent: 5061608 (1991-10-01), Foster et al.
patent: 5236814 (1993-08-01), Kuse et al.
patent: 5352568 (1994-10-01), Kuse et al.
patent: 5384233 (1995-01-01), Kuse et al.

Affiliated with

Also associated with

Rating

Method for preparing a ready-to-use photographic bleaching solut does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing a ready-to-use photographic bleaching solut, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing a ready-to-use photographic bleaching solut will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1851630