Method and device for removing spots from a printing plate

Details Method and device for removing spots from a printing plate Method and device for removing spots from a printing plate

1986-10-06

1987-08-18

Coughenour, Clyde I.

Printing

Planographic

Dampeners

101425, B41L 2516

Patent

active

046869018

ABSTRACT:
A method and device for removing spots from a printing plate of a printing machine having a moistening mechanism with an application roller and an immersion roller immersed in a container with a moistening agent and operated in contact with the application roller for application of a moistening agent to the printing plate, wherein the application roller is driven by a plate cylinder connected to the application roller in a form-locking manner, with an interposition of a switching coupling, so that a peripheral speed of the application roller in a coupled position is lower than that of the plate cylinder. The drive also includes a hydraulic cylinder connected by a scanner and a switch to an electric motor for driving the immersion roller.

REFERENCES:
patent: 3508489 (1970-04-01), Norton
patent: 3673959 (1972-07-01), Jesuit
patent: 3842735 (1974-10-01), Southam
patent: 3911815 (1975-10-01), Banfer
patent: 4066017 (1978-01-01), Garcowiski

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