发明申请
- 专利标题: Lead edge sheet curl sensor
- 专利标题(中): 引线边缘卷曲传感器
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申请号: US11490692申请日: 2006-07-20
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公开(公告)号: US20080018913A1公开(公告)日: 2008-01-24
- 发明人: Kenneth R. Ossman , Stanley J. Wallace , Michael D. Borton
- 申请人: Kenneth R. Ossman , Stanley J. Wallace , Michael D. Borton
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 主分类号: G01B11/14
- IPC分类号: G01B11/14
摘要:
A lead edge sheet curl sensor apparatus and method are disclosed. In general, a first and a second light emitter are aligned wherein the light beams from the first light emitter and second light emitter cross. The first and second light emitter beams cross at the transport media sheet substrate path wherein the transport media sheet substrate path is the path of a media sheet substrate with zero curl. First and second light detectors are aligned to receive the light beams from the first and second light emitters.A media sheet substrate with either positive or negative curl on the lead edge of the sheet substrate interrupts light beams from first and second light emitters, as detected at first and second light detectors. The time delay between the light beam interruptions is proportional to the sheet substrate curl, and the order of interruptions indicates whether the sheet substrate curl is positive or negative.
公开/授权文献
- US07545519B2 Lead edge sheet curl sensor 公开/授权日:2009-06-09