A Modified Casein Coating for 300 Line Screen Reproduction on Smooth Grained Litho Plates.

Details

Document ID: 
560109
Author(s): 
William H. Martin
Year: 
1956
Pages: 
7

Pricing

Digital, Member: 
$10.00
Digital, Non-Member: 
$20.00
Photo, Member: 
$15.00
Photo, Non-Member: 
$30.00

Abstract

A commercial brand of lithographic casein is modified by reacting it with glyoxal and by the addition of a solubilizing agent - guanidine carbonate. This coating is mixed with water and ammonium chromate is added as a sensitizing material. The coating is diluted with water to 2 - 3 Baume'' and is coated on pumice grained metal plates. To meet the specifications of the sponsor* the ingredients of the coating must withstand a temperature of 70 C. for five days and print a 300 line screen for a minimum of 10,000 impressions. *This research was performed under: Research and Development Contract No. DA-44-0O9, ENG-2612, Dated June 6, 1955, Government Project No. 8-35-09-110, Corps of Engineers, U.S. Army Engineer Research and Development Laboratories, Fort Belvoir, Virginia

Return To Search Results

Search Again

TAGA Papers Order Form