Title: Offset Al plate graining mixed electrolytic solution and graining technique
Application Number: 93115571 Application Date: 1993.11.10
Publication Number: 1102614 Publication Date: 1995.05.17
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B41N3/03,C25F3/04
Applicant(s) Name: Inst. of Printing Science and Tech., Hunan Prov. Address: 410009
Inventor(s) Name:
Attorney & Agent: ZHOU CHUNZHAO
Abstract:
     The electrolyte for making graining on aluminium plate for offset print is an aqueous solution containing at least one alkali metal chloride and HCl _HNO3, and is used in the conditions of symmetric or non-cymmetric sine ac, 10-60 deg.C and 80-250 seconds. Obtained aluminium plate features uniform and dense grains with hierarchial structure and long service life (more than 100 thousands times).
Time: 6