Patent Number: 7,045,266

Title: Lithographic printing plate

Abstract: A lithographic printing original plate, a lithographic printing plate using the lithographic printing original plate and a process for producing the lithographic printing plate are disclosed. The lithographic printing original plate has, on a substrate, a photosensitive layer made of a crosslinked polymer comprising a hydrophilic polymer, a crosslinking agent and a light absorbing compound or comprising a hydrophilic polymer, a crosslinking agent, a light absorbing compound and a hydrophobic polymer, and has properties that the photosensitive layer is changed from ink-repellent to ink-receptive by irradiation with a light.

Inventors: Mase; Hiroshi (Sodegaura, JP), Hirose; Sumio (Sodegaura, JP), Suzuki; Yuko (Sodegaura, JP), Matsumoto; Katsuru (Kyoto, JP), Sanada; Takayuki (Sodegaura, JP)

Assignee: Mitsui Chemicals, Inc.

International Classification: G03F 7/04 (20060101)

Expiration Date: 5/16/02018