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:
Feb. 12, 1980
Filed:
Apr. 24, 1978
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A photosensitive printing plate with high sensitivity comprising a support having a hydrophilic surface and formed in succession thereon (1) a layer of an oleophilic photosensitive resin composition whose solubility in a solvent is changed by exposure to light to which the resin composition layer is sensitive and (2) directly on the layer (1) a layer containing a dispersion of particles of photosensitive silver halide grains coated with a water-soluble polymer in an oleophilic polymer capable of being dissolved in a developer for the photosensitive resin composition. The photosensitive printing plate is first image-wise exposed to light to which only the layer containing the silver halide is sensitive followed by silver halide development with an aqueous developer solution to form a silver image, subjected then to overall exposure using light to which the layer of the photosensitive resin composition is sensitive, and developed with a developer which dissolves the oleophilic polymer in the layer containing the silver halide and only one of either the exposed portions or the unexposed portions of the layer of the photosensitive resin composition.