| 摘要 |
To permit, selectively, either continuous application of printing ink to axially oscillating inking distribution rollers of an offset printing machine, or intermittent ink supply by means of a ductor roller, an ink supply roller 6 is driven at a speed matched to the speed of a printing cylinder 13, the ink roller 6 being in continuous contact with a next adjacent roller 8 of the ink train forming the inking system. Ink is supplied to the inking roller 6, selectively, either by continuous contact with an ink ductor roller 3, which is then driven at a speed corresponding to the speed of the printing or plate cylinder; or, by changing the relative positions of some of the rollers of the ink train, for example by locating the bearing of an additional transport roller in a pivotal link, the additional transport roller can be moved intermittently by means of a cam or the like between the ductor roller 3 and the ink supply roller to intermittently transport ink from the ductor roller, engaged in an ink trough or well, to the ink supply roller. In the second position, with intermittent drive, the speed of the ductor roller can be less than the speed matched to that of the printing cylinder.
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