Process for producing a surface structure for a cylinder of a pr

Details Process for producing a surface structure for a cylinder of a pr Process for producing a surface structure for a cylinder of a pr

1996-04-26

1998-07-28

Valentine, Donald R.

Electrolysis: processes, compositions used therein, and methods

Electrolytic erosion of a workpiece for shape or surface...

205666, 205674, 2989532, 21912173, 216 11, 216 52, 2504923, 427271, 427272, 427274, C25F 302, H01R 4300, B05D 300, B23K 2606

Patent

active

057858403

ABSTRACT:
The present invention relates to a process for producing a surface structure, preferably on a cylinder, cylinder dressing, or roller of a printing machine, with a hard chromium coating which is galvanically produced and preferably ground to dimensional accuracy. The object of the invention is to develop a process which permits a surface structure to be produced on the hard chromium coating, which surface structure permits relatively high frictional forces between the contact points of the printing material and the coating of the cylinder of the printing machine. This is achieved in that the surface structure is produced in two process steps in sequence, a surface part structure being produced as a dot screen in an approximately even random distribution by means of a first material erosion process in a first process step, and the final surface structure being produced in a second process step by means of a second material erosion including the dot screen.

REFERENCES:
patent: 4073710 (1978-02-01), Visser
patent: 5102744 (1992-04-01), Wirz et al.

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