Method of storing photographic processing solution

Details Method of storing photographic processing solution Method of storing photographic processing solution

G - Physics

03

C

96/60

G03C 5/26 (2006.01)

Patent

CA 1311644

ABSTRACT The disclosure discloses the storing of a photographic processing solution which is selected from the group consisting of a liquid color developer containing ingredients given below and a liquid bleach-fixer containing ingredients given below in a container made of plastic material whose oxygen permeation coefficient is 0 to 50 m?/(m2 atm day) under a temperature at 20°C and a relative humidity at 60 %. The developer com- prises an aromatic primary amine color developing agent; an alkyl-substituted hydroxylamine compound represented by the general formula [1]; [1] Image (wherein R1 and R2 are independently selected from the group consisting of a hydrogen atom and a substituted or unsubsti- tuted alkyl group having 1 to 3 carbon atoms, provided that at least one of R1 and R2 is an unsubstituted alkyl group having 1 to 3 carbon atoms and that R1 and R2 may be combined with each other to form a ring) and an alkaline ingredient for making pH of said liquid color developer not less 9.5. The bleach fixer comprises a ferric aminopolycarboxylate, an aminopolycarboxylic acid in an amount of 0 to 1 x 10-3 mol per liter of liquid bleach fixer, a thiosulfate and a sulfite in an amount of 1 x 10-3 to 2 x 10-1 mol per liter of said liquid bleach fixer. With this method there is no need for a procedure to blend the necessary ingredients. The mixture has only a weak toxicity and can be safely handled and stored for a long period of time without loosing its photographic properties.

540118

Affiliated with

Also associated with

Rating

Method of storing photographic processing solution 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 of storing photographic processing solution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of storing photographic processing solution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1313051