| 摘要 |
A printing press unit for a printing press system which has a main frame with an impression roller mounted for rotation on a first axis characterized by a sub-frame being mounted for pivotal movement around a second axis and supporting a printing cylinder which will be moved into contact with the web passing between the impression roll and the cylinder. The sub-frame can be laterally adjusted along the second axis and the second axis can be skewed as necessary for purposes of registration of the web during a printing process. For a rotogravure printing, the ink applicator and doctor blade holder are both releasably mounted on positoning assemblies which are provided on the sub-frame. In addition, an ink pad is held beneath the printing cylinder by an arm, which can is pivotably connected to the main frame and can be vertically raised and lowered so that the pan receives the cylinder as it is released from the sub-frame, then lowers the cylinder to a level to clear the portions of the press and is then pivoted out of the press for exchange. During this exchange, the ink applicator and doctor blade holder can also be quickly removed. The press can also be modified to receive an inking and transfer roller for a flexo printing process as the printing roller is mounted in the first sub-frame.
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