Device for controlling wetting behavior of metal surfaces by app

Details Device for controlling wetting behavior of metal surfaces by app Device for controlling wetting behavior of metal surfaces by app

1991-03-01

1993-02-09

Crowder, Clifford D.

Printing

Planographic

Rotary machines

101148, 1014501, 1014161, 204218, 204224R, 205117, 205127, 205151, B41F 720, B41F 724

Patent

active

051845504

ABSTRACT:
Apparatus for controlling the wetting behavior of the surface of a cylinder formed of passivatable metal. A wetting device is used to apply an electrolyte to the surface of the metal cylinder. A direct current source is connected between the wetting device and the cylinder and a control device is used to control the voltage necessary for passivating the surface of the cylinder as a function of the pH value of the electrolyte and the type of metal forming the surface of the cylinder. The oleophilic or oleophobic characteristics of the cylinder are thus controlled.

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patent: 2961395 (1960-11-01), Icxi
patent: 3563862 (1971-02-01), Joly et al.
patent: 4327133 (1982-04-01), Wirz et al.
patent: 4605480 (1986-08-01), Stroszynski et al.
patent: 4610772 (1986-09-01), Palnik
patent: 4872962 (1989-10-01), Scheer et al.
patent: 5009161 (1991-04-01), Wirz

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