Patent · US Expired

Lithographic printing plate having dual photosensitive layering

US4233390A · kind A · utility

15Cited by
11References
7Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 20, 1979
Grant dateNov 11, 1980
Priority date
Expiry dateJul 20, 1999

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03F7/0955
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A method for preparing aluminum based lithographic printing plates which comprises treating at least one surface of an aluminum base sheet with lithographically suitable, photosensitive, preferably water-soluble, diazo composition and then applying to said surface a lithographically suitable photopolymerizable composition to yield the desired photosensitive lithographic printing plate of improved characteristics.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.