Etching processing apparatus

Details Etching processing apparatus Etching processing apparatus

1976-08-02

1978-02-14

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Wiping

B41F 3500

Patent

active

040730280

ABSTRACT:
This invention discloses an etching processing apparatus wherein a member in the form of a sponge is soaked in an etching processing liquid vessel, for rubbing a surface of a lithographic master, which is conveyed by an endless belt, which rotates in a predetermined direction, through the etching processing liquid, so that the non-imaged part of the lithographic master may be made hydrophilic by keeping an adequate pressure between the sponge-form member and the endless belt.

REFERENCES:
patent: 3237231 (1966-03-01), Zink
patent: 3505701 (1970-04-01), Keil
patent: 3562834 (1971-02-01), Stievanent et al.
patent: 3630776 (1971-12-01), Barr
patent: 3694071 (1972-09-01), Touchette
patent: 3792503 (1974-02-01), Brock

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