Printing machine roller

The present invention relates to a printing machine roller (1). The roller comprises an upper cylinder packing (2), a lower cylinder packing (3) and a maintenance device (4) for maintaining the upper cylinder packing (2). The lower cylinder packing (3) includes a plurality of liner page papers (3.1, 3.2, 3.3) mutually overlapped. A first clamping device (7.1) is internally provided with one part of or all the liner page papers (3.1, 3.2, 3.3), and the second clamping device (7.2) is internally provided with one part of the liner page papers (3.1, 3.2, 3.3). The mode is that: the uppermost liner page paper (3.1) or few of the upper liner page papers in the liner page papers (3.1, 3.2, 3.3) are clamped in the second clamping device (7.2). 本发明涉及种印刷机的滚筒(1)，该滚筒包括上包衬(2)、下包衬(3)、保持所述上包衬(2)的保持装置(4)。下包衬(3)包括相互叠置的多个衬垫页张(3.1，3.2，3.3)。在第夹紧装置(7.1)中仅夹紧所述衬垫页张(3.1，3.2，3.3)中的部分量或者全部，在第二夹紧装置(7.2)中仅夹紧所述衬垫页张(3.1，3.2，3.3)中的部分量，其方式是，在第二夹紧装置(7.2)中仅夹紧所述衬垫页张(3.1，3.2，3.3)中的最上面的衬垫页张(3.1)或者仅夹紧所述衬垫页张(3.1，3.2，3.3)中的少量的上面的衬垫页张。