Activator solution with cold image tone-providing agent
AssigneeEastman Kodak Company
InventorDonald F. McLaen
Life of this patent
Estimating the term…
Abstract
Potassium iodide (or a related iodide) when incorporated in an alkaline activator for use in a rapid access processor using developer-incorporated, resin-coated paper, (i) produces a cold image tone in black-and-white photographic prints, and (ii) maintains the image tone of a large number of prints within a narrow image tone range over a (one week or one thousand 8.times.10 inch print) design life of the activator solution.
Claims3
A process for improving the image tone of a large number of black-and-white photographic prints made by an automated processor employing (a) the activation process to prepare said prints from activator incorporated, resin-coated photographic paper and (b) a batch of processing chemicals;
- said process comprising activating said paper at the activate section of said processor with an alkaline activator containing from about 1.0 to about 8.0 grams per liter of an alkali metal iodide.
Dependencies are inferred from the claim text.