(57) The invention relates to an arrangement and a method for removing printing ink from guide rollers (11) in a printing press.
As a paper web (2) moves along its normal path through the printing press while printing is suspended, a prin­ting-ink solvent (6), preferably a mineral-oil frac­tion, is sprayed onto the paper web, either upstream or downstream of a printing machine (1). The printing-ink deposits on the rollers (11) are dissolved by the sol­vent as the sprayed paper-web (2) passes over the roll­ers (11), and the dissolved printing ink is then wiped from the rollers with a non-sprayed part of the paper web (2).
In accordance with one preferred embodiment, the sol­vent (6) is sprayed onto the paper web (2) in one or more sinusoidal paths and the guide rollers (11) 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 (2) passes over the rollers. The duration of the pulses is preferably vari­able and adapted to the cleaning effect desired.