| 摘要 |
In an office machine, for example a printer, with a printing unit, with individual paper transport via pairs of rollers and with endless paper transport via a tractor, a release of the pressure rollers, which is necessary for the tractor to operate in the pulling mode, is carried out by means of two stops attached to the tractor, the pressure roller of a first pair of roller being released via the first stop, during the pivoting of the tractor up into the pulling position, and the pressure roller of a second pair of roller being released, in the pulling position of the tractor, during the inward pivoting of a pivoting housing part, on which the pressure roller of the second pair of rollers are arranged resiliently.
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