公开(公告)号：US4504843A

公开(公告)日：1985-03-12

申请号：US399238

申请日：1982-07-19

申请人： Hans-Rudiger Prohl ,  Bernd Schmidt ,  Hans-Peter Spannehl

发明人： Hans-Rudiger Prohl ,  Bernd Schmidt ,  Hans-Peter Spannehl

IPC分类号： B41J11/04 ,  B65H5/22 ,  G01D15/34

CPC分类号： B65H5/226 ,  B41J11/04

摘要： A recorder contains a rotatably mounted drum which is structured as a vacuum or negative pressure-hollow cylinder. At the cylindrical circumferential surface of the drum body there is arranged at least one clamping or supporting region for the retention of a sheet-shaped record carrier or medium, each clamping or supporting region containing a closed channel system. Each individual channel system comprises a number of channels of a first group of channels which are arranged in the lengthwise axial direction of the drum and essentially parallel to a clamping portion and a number of channels of a second group of channels arranged essentially transversely with respect to the first group of channels. In order to obtain a stable smooth contact or support of the record carrier or medium at the drum there is provided in the last channel of the related clamping or supporting region, which is arranged parallel to the clamping portion, an opening which penetrates through the drum body. For the smooth contact of the marginal zone of the record carrier there is provided parallel to the last channel a further channel containing branch channels arranged transversely thereto as well as openings.

摘要翻译： 记录器包括可旋转地安装的鼓，其被构造为真空或负压中空圆柱体。 在滚筒主体的圆柱形圆周表面处设置有至少一个夹紧或支撑区域，用于保持片状记录载体或介质，每个夹持或支撑区域包含封闭的通道系统。 每个单独的通道系统包括多个通道，第一组通道布置在滚筒的纵向轴向方向上，并且基本上平行于夹紧部分和相对于第一组通道基本上横向布置的第二组通道的多个通道 第一组渠道。 为了获得滚筒上的记录载体或介质的稳定的平滑接触或支撑，设置在平行于夹紧部分的相关夹持或支撑区域的最后通道中，该开口穿过滚筒 身体。 为了记录载体的边缘区域的平滑接触，平行于最后一个通道设置另外的通道，其包含横向布置的分支通道以及开口。