Method and arrangement for cleaning guide rollers

Details Method and arrangement for cleaning guide rollers Method and arrangement for cleaning guide rollers

1990-03-30

1992-01-14

Burr, Edgar S.

Printing

Processes

101425, 101424, B41F 3500

Patent

active

050800159

ABSTRACT:
The invention relates to a method for removing printing ink from guide rollers in a printing press. As a paper web moves along its normal path through the printing press while printing is suspended, a printing ink solvent is sprayed onto the paper web, either upstream or downstream of a printing machine. The printing ink deposits on the rollers are dissolved by the solvent as the sprayed paper web passes over the rollers, and the dissolved printing ink is then wiped from the rollers with a nonsprayed part of the paper web. In accordance with one preferred embodiment, the solvent is sprayed onto the paper web in one or more sinusoidal paths and the guide rollers are subsequently braked, preferably to a complete stop and preferably pulse-wise when the sprayed part of the web and the wiping part of the web passes over the rollers. The duration of the pulses is adapted to the desired cleaning effect.

REFERENCES:
patent: 2408449 (1946-10-01), Russell
patent: 4651644 (1987-03-01), Kaempfe et al.
patent: 4781116 (1988-11-01), Harada
patent: 4930415 (1990-06-01), Hara et al.
patent: 4981078 (1991-01-01), Dettinger et al.

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