Photographic reversal process prebleach concentrate container
AssigneeEastman Kodak Company
InventorsJean Marie Buongiorne, Michael John Haight
Life of this patent
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Abstract
A conditioning or bleach accelerating solution is prepared by diluting a concentrate up to 25 times. The concentrate contains a formaldehyde bisulfite precursor salt at from 200 to 600 g/l, sulfite ions at 0 to 200 g/l, a bleach accelerating agent at from 1.5 to 25 g/l, and a metal ion chelating agent present at up to 60 g/l. The concentrate is free of sodium ions.
Claims12
A container containing a conditioning solution concentrate, said container composed of a water-impermeable synthetic polymer,
- said conditioning solution concentrate being free of sodium ions, and comprising:
- a formaldehyde bisulfite salt other than the sodium salt, said salt being present in an amount of from about 200 to about 600 g/l,
- sulfite ions present in an amount of from 0 to about 200 g/l,
- a bleach accelerating agent present in an amount of from about 1.5 to about 25 g/l, and
- a metal ion chelating agent present in an amount of less than or equal to 60 g/l.
The container of claiml 1 wherein said formaldehyde bisulfite salt is present in an amount of from about 500 to about 600 g/l, said sulfite is present in an amount of from about 100 to about 200 g/l, said bleach accelerator agent is present in an amount of from about 1.5 to about 12 g/l, and said metal ion chelating agent is present in an amount of from about 10 to about 60 g/l.
Dependencies are inferred from the claim text.