Process for the surface treatment of lithographic printing...

Details Process for the surface treatment of lithographic printing... Process for the surface treatment of lithographic printing...

B - Operations, Transporting

41

N

B41N 3/03 (2006.01) C23C 22/66 (2006.01) C23F 1/36 (2006.01) C25F 3/04 (2006.01)

Patent

CA 2173653

A process is disclosed to produce a fine honeycomb grain with matte finishing on an aluminum surface in alkaline solution with or without electrical treatment. To achieve the fine honeycomb, a passivation enhancement step is used prior to alkaline etching with or without electricity. The matte appearance with fine honeycomb topography on the aluminum surface is produced by silicating raw aluminum prior to alkaline etching.

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