Patent · US Expired

Process for heat treating lithographic printing plates

US4191570A · kind A · utility

28Cited by

4References

10Claims

0Family size

Assignee

Polychrome Corporation · US

Inventors

Hans-Peter Herting · Osterode, DE
Wolfgang J. Rebner · Herzberg, DE

Key dates

Filing date	Oct 10, 1978
Grant date	Mar 4, 1980
Priority date	—
Expiry date	Oct 10, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24917
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A process for producing a planographic printing plate comprising subjecting a light sensitive planographic printing plate member to a burning in wherein the light sensitive planographic printing plate member is treated with an aqueous solution of the reaction product of naphthalene, formaldehyde, and sulfuric acid prior to such burning in treatment.

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