发明授权
- 专利标题: Sheet-fed printing press
- 专利标题(中): 单张纸印刷机
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申请号: US11112914申请日: 2005-04-22
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公开(公告)号: US07107903B2公开(公告)日: 2006-09-19
- 发明人: Minoru Tokinaga , Masamichi Sasaki , Kiyomi Utsumi
- 申请人: Minoru Tokinaga , Masamichi Sasaki , Kiyomi Utsumi
- 申请人地址: JP Hiroshima-Ken
- 专利权人: Ryobi Ltd.
- 当前专利权人: Ryobi Ltd.
- 当前专利权人地址: JP Hiroshima-Ken
- 代理机构: Osha Liang LLP
- 优先权: JP2004-127587 20040423
- 主分类号: B41F13/24
- IPC分类号: B41F13/24
摘要:
There is provided a sheet-fed printing press that is capable of rapidly performing printing preparatory work for more secured double sheet detection. A double-sheet-detector control part judges whether an ultrasonic double sheet detector outputs double sheet detected signal during test printing or during feeding a first printing sheet of successively fed printing sheets in large quantity or successive printing. Where double sheet detected signal was output, it is judged that the detection made by the ultrasonic double sheet detector is erroneous so that the double-sheet-detector control part switches to a photoelectric double sheet detector to be employed as a double sheet detector for use in large quantity or successive printing. On the other hand, where no double sheet detected signal was output, it is judged that the detection made by the ultrasonic double sheet detector is correct so that the double-sheet-detector control part keeps the ultrasonic double sheet detector in operation to employ the same as a double sheet detector for use in large quantity or successive printing.
公开/授权文献
- US20050235847A1 Sheet-fed printing press 公开/授权日:2005-10-27