The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1994
Filed:
Jul. 07, 1993
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Abstract
A PS plate comprises a surface-grained and anodized aluminum plate provided thereon with a light-sensitive layer of a composition comprising a light-sensitive substance and an alkali-soluble resin wherein the light-sensitive substance is a 1,2-naphthoquinonediazide-5- (or -4-) sulfonic acid ester of a polyhydroxy compound of formula (I): ##STR1## wherein substituents R.sub.1 to R.sub.4 may be same or different and each represents a hydrogen atom, a hydroxyl group, a halogen atom, an alkyl group, an alkoxy group or an alkenyl group; R.sub.5 and R.sub.6 each represents a hydrogen atom, an alkyl group or a group: ##STR2## a and c each represents 0-1 and b represents 0-4. The PS plate permits the complete removal of any pasting mark and has a high development latitude.