Importance

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Abstract

An ink supplying device which supplies ink to a plate cylinder and thus to a blanket cylinder of a rotary printing press includes a plurality of rollers which are in contact with one another and with the plate cylinder, respectively. The device further includes an ink supply fountain, an ink supply roll and a ductor roll which is displaceable between two positions in one of which it contacts the ink supply roll and is replenished with ink and in the other of which it contacts one of the rollers and delivers the ink thereto. A drive for the ink supply device includes a main drive shaft and a transmission which directly drives the above-mentioned one roller while circumventing the other rollers so that a jolt which occurs upon the contact of the ductor roll with the one roller is not transmitted to the other rollers. This transmission may also drive the ink supply roll, as well as the arrangement for displacing the ductor roll, while another transmission is interposed between the main drive shaft and the remaining rollers which may also drive the above-mentioned cylinders. Another of the rollers is interposed between the one roller and a still further roller and is driven in rotation solely by friction between itself and the one or further roller.

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First Claim