Positive developer containing non-ionic surfactants
AssigneeAmerican Hoechst Corporation
InventorsStanley F. Wanat, Shane Hsieh
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Abstract
A developer composition for positive working lithographic printing plates and photoresists comprising an aqueous alkaline solution with a non-ionic surfactant.
Claims8
A developer for positive working photographic elements which comprises an aqueous solution of hydroxide ions having a pH above about 7.0 provided from an alkali having a concentration in the developer which ranges from about 0.2 to about 10 percent by weight;
- and a compatible non-ionic surfactant selected from the group consisting of one or more of tetramethyl decynediol and ethoxylated tetramethyl decynediol.
A developer for positive working photographic elements which comprises an aqueous solution of hydroxide ions having a pH above about 7.0 from an alkali selected from the group consisting of one or more of trisodium phosphate, sodium hydroxide, monosodium phosphate, sodium silicate, and sodium metasilicate;
- and a compatible non-ionic surfactant selected from the group consisting of one or more of tetramethyl decynediol and ethoxylated tetramethyl decynediol.
Dependencies are inferred from the claim text.