Liquid applicator for lithographic systems

Details Liquid applicator for lithographic systems Liquid applicator for lithographic systems

1972-08-14

1976-10-19

Fisher, J. Reed

Printing

Planographic

Dampeners

B41F 724

Patent

active

039864529

ABSTRACT:
A method and apparatus for applying a controlled quantity of dampening fluid to a lithographic printing system comprising a smoothly finished hydrophilic transfer roller mounted in pressure indented relation with a metering roller having a smooth resilient surface. Pressure between the metering roller and transfer roller is adjustable and the respective rollers are driven by independent variable speed drive means such that surface speeds of the rollers relative to each other and relative to surfaces of the lithographic printing system are precisely controllable.

REFERENCES:
patent: 3026795 (1962-03-01), Dietrich
patent: 3168037 (1965-02-01), Dahlgren
patent: 3259062 (1966-07-01), Dahlgren
patent: 3283707 (1966-11-01), Greuber et al.
patent: 3283712 (1966-11-01), Chambon
patent: 3343484 (1967-09-01), Dahlgren
patent: 3433155 (1969-03-01), Norton
patent: 3504626 (1970-04-01), Worthington
patent: 3508489 (1970-04-01), Norton
patent: 3587460 (1971-06-01), Chambon
patent: 3647525 (1972-03-01), Dahlgren
patent: 3688694 (1972-09-01), Preuss

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