| 摘要 |
A printing press comprises a pair of left- and right-frames, a safety cover movably supported between a closing position for closing at least one part of a space formed between the frames and a releasing position for releasing the space and a printing plate holding device movably supported at an exterior side with respect to the safety cover between a shelter position for holding a new printing plate supplied to a lower plate cylinder and a discharged printing plate discharged from the lower plate cylinder and an operation position for storing the new printing plate supplied to the lower plate cylinder or the discharged printing plate discharged from the lower plate cylinder. While the safety cover at the closing portion, the printing plate holding device can be moved between the shelter position and the operation position in order to set a new printing plate and remove a discharged printing plate easily while a peripheral are of a lower side of a printing unit can be protected in the case of exchanging the printing plate.
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