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Machine for mounting flexible printing plates on plate-holder cylinders of flexographic printing machines and for printing proofs
Machine for mounting flexible printing plates on plate-holder cylinders of flexographic printing machines and for printing proofs
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机译:用于在柔性版印刷机的印版滚筒上安装柔性印刷版的机器以及用于打印样张的机器
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摘要
Machine for mounting flexible printing plates on plate-holder cylinders and for printing proofs with the cylinders thus prepared, the machine being frontally provided with a counterpressure drum and with a beam which are horizontally parallel and move with respect to each other between a mounting position and a printing position. The counterpressure drum can rotate and is covered with a sheet of paper having registration markings. The beam is provided with supports that rotatably support a plate-holder cylinder. The machine comprises: an optical device with a semitransparent mirror, adapted to align directly-viewed points of the plate-holder cylinder in mounting position with reflected points of the sheet of paper; at least two video cameras, positionable along a bar that lies parallel to the drum and the cylinder and directed towards the plate- holder cylinder, which is in the mounting position, along respective axes that intersect the optical device and are substantially at right angles to the axis of the plate-holder cylinder; and front monitors connected to the respective video cameras.
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