Title:
MANUFACTURE OF SHEET, FILM OR RIBON FORM MATERIAL FOR OBTAINING OFFSET PRINTING SHEET
Document Type and Number:
Japanese Patent JPS6052596
Kind Code:
A
Abstract:
A process is disclosed for the production of bases for offset printing plates in the form of sheets, foils or webs made of roughened aluminum or one of its alloys, which is carried out in an anodic oxidation stage, i.e. in an aqueous electrolyte which contains phosphorus-containing anions. In the procedure, an electrolyte containing dissolved phosphoroxo anions, with the exception of aqueous H3PO4, is employed, and the treatment is carried out for a period of about 1 to 90 seconds, at a voltage between about 10 and 100 volts and at a temperature of about 10 DEG to 80 DEG C. The electrolyte is, in particular, a salt of an oxyacid of phosphorus, such as Na3PO4 or K3PO4. Hydrophilization of the base can be carried out additionally after the anodic oxidation. Also disclosed is a base material produced according to the process and an offset printing plate which includes the base material.
Inventors:
DEIITAA MOORU
Application Number:
JP16301884A
Publication Date:
March 25, 1985
Filing Date:
August 03, 1984
Export Citation:
Assignee:
HOECHST AG
International Classes:
B41N1/08; B41N3/00; B41N3/03; C25D11/06; C25D11/08; (IPC1-7): B41N3/00; C25D11/06
Domestic Patent References:
| JPS586639A | 1983-01-14 | |||
| JPS5746436A | 1982-03-16 | |||
| JPS58177493A | 1983-10-18 |
Attorney, Agent or Firm:
Toshio Yano
Previous Patent: A manufacturing method of a scintillator array
Next Patent: ELECTROLYTIC METHOD FOR COLORING ALUMINUM AND ALUMINUM ALLOY
Next Patent: ELECTROLYTIC METHOD FOR COLORING ALUMINUM AND ALUMINUM ALLOY