Lithographic moisture system and method

Details Lithographic moisture system and method Lithographic moisture system and method

1977-08-01

1978-12-19

Coughenour, Clyde I.

Printing

Planographic

Rotary machines

101147, 101350, 101451, B41F 724, B41L 2500

Patent

active

041300564

ABSTRACT:
A moisture control feed system of the bare-back type in which there is in nip-contact with a moisture transfer roll and the moisture transfer roll is driven solely by the shear resistance offered by the intervening layers at the nip of the ink and the moisture. The system includes an ink reservoir that simulates an oleophilic image in the form of a narrow strip extending transverse the direction of rotation of the master cylinder and is located outside the master retention area to supply ink to the oleophilic moisture form roll. The simulated image maintains the proper ink layer thickness on the oleophilic moisture form roll and the ink quality to assure proper rotational speed control of the transfer roll.

REFERENCES:
patent: 738821 (1903-09-01), Linder
patent: 2981180 (1961-04-01), Crissy
patent: 3048098 (1962-08-01), Siebke
patent: 3368483 (1968-02-01), Storms
patent: 4029008 (1977-06-01), Mabrouk

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