Printing machine with an electrochemically changeable printing f

Details Printing machine with an electrochemically changeable printing f Printing machine with an electrochemically changeable printing f

1991-07-08

1993-05-18

Burr, Edgar S.

Printing

Planographic

Lithographic plate making, and processes of making or using...

101465, 101146, B41M 520

Patent

active

052111130

ABSTRACT:
A printing machine for performing flat-bed printing having a printing form with hydrophobic and hydrophilic area thereon corresponding to an image to be printed, and a device for electrochemically converting, respective areas thereof for producing a printing copy from the hydrophobic into the hydrophilic state by means of a current-conduction arrangement, including a fluid applicator for applying a hydrophobic fluid full-surface to a surface of the printing form, and a control device for controlling the current-conduction arrangement for forming appropriate current paths and for electrochemically removing the hydrophobic fluid area-by-area in accordance with the hydrophilic areas required for the image to be printed; and a method of operation thereof.

REFERENCES:
patent: 4729310 (1988-03-01), Love, III
patent: 4872962 (1989-10-01), Scheer et a.
patent: 4873924 (1989-10-01), Nonomura et al.
patent: 4959668 (1990-09-01), Hirt

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