Patent · US Expired

Method and apparatus for making a lithographic offset plate by the silver salt diffusion transfer process

US5561027A · kind A · utility

5Cited by

5References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Bartholomeus Verlinden · Tongeren, BE
Bert Vackier · 's-Gravenwezel, BE
Jan Claes · Mortsel, BE
Bart Verhoest · Niel, BE

Key dates

Filing date	May 11, 1995
Grant date	Oct 1, 1996
Priority date	—
Expiry date	May 11, 2015

Classification

Technology area (CPC G)Physics
CPC primaryG03D5/04
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method and apparatus for making an offset printing plate according to the silver salt diffusion transfer process comprises the step of washing the imaging element by applying a curtain of an aqueous medium onto the surface of the element at its silver halide emulsion layer side, across the width of the element, substantially transverse to its processing direction, and in countercurrent to the processing direction of the element.

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