Rapid access, air stable, regenerable iron chelate developer solutions
AssigneeMinnesota Mining and Manufacturing Company
InventorsRichard S. Fisch, Norman Newman
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Abstract
Rapid access, air stable, regenerable iron chelate developers comprising at least three developer materials, at least one selected from each of the groups comprising: 1. iron chelate developers 2. an ascorbic acid and 3. phenidone, glycin, cysteine hydrochloride, hydroxylamine sulfate, hydroquinone monosulfonate and 4-amino-N-ethyl-N-(.beta.-methanesulfoneamidoethyl)-m-toludine.
Claims5
A superadditive non-fixing developer solution comprising at least three developer materials, the solution comprising an iron chelating developer, a second developer selected from the group consisting of ascorbic acid, sugartype derivatives of ascorbic acid, and stereoisomers and diastereoisomers of ascorbic acid and its sugar-type derivatives, and a third developer selected from the group consisting of 1-phenyl-3-pyrazolidone, glycin, cysteine hydrochloride, hydroxylamine sulfate, 4-amino-N-ethyl-N-(.beta.-methanesulfoneamidoethyl)-m-toluidine, and hydroquinone monosulfonate.
Dependencies are inferred from the claim text.