Positiv arbeitende lichtempfindliche Zusammensetzung, lichtempfindliche Druckplatte und Verfahren zur Herstellung eines positiven Bildes

摘要

A positive photosensitive composition comprising an alkali-soluble resin having phenolic hydroxyl groups (a) and a photo-thermal conversion material (b), and not containing a quinonediazide compound, which contains an alkali-soluble resin having phenolic hydroxyl groups, of which at least some are esterified (a-1).