发明名称 |
ELECTRIC OR ELECTRONIC SHEET CONTROL DEVICE FOR SHEET-TRANSFERRING CYLINDERS OF PRINTING MACHINES |
摘要 |
An electric or electronic sheet control device is provided at a sheet-transferring cylinder of a printing machine. According to the state of the art, in order to detect a leading edge of a sheet, two detecting elements respectively detect the presence of a sheet and a misaligned sheet. According to the invention, two detecting elements are disposed in such a way that they detect at least the outer areas of a leading edge of a sheet and at least one further detecting element is provided between the two detecting elements, which makes it possible to detect whether or not the leading edge of the sheet is straight.
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申请公布号 |
US5231927(A) |
申请公布日期 |
1993.08.03 |
申请号 |
US19920874535 |
申请日期 |
1992.04.27 |
申请人 |
HEIDELBERGER DRUCKMASCHINEN AG |
发明人 |
PFISTERER, ALEXANDER;SCHULZ, ANDREAS |
分类号 |
B41F21/00;B41F21/10;B41F33/14 |
主分类号 |
B41F21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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