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51. 发明授权

US07249819B2 Apparatus and methods of detecting relative position of RF signature on print media 有权
标题翻译：检测打印介质上RF签名的相对位置的装置和方法
公开(公告)号：US07249819B2
公开(公告)日：2007-07-31
申请号：US10939634
申请日：2004-09-13
申请人： Chris Anthony Burdette , Keith Bryan Hardin , Mark Stephen Underwood , Terry Lee Wells
发明人： Chris Anthony Burdette , Keith Bryan Hardin , Mark Stephen Underwood , Terry Lee Wells
IPC分类号： B41J29/393
CPC分类号： B41J29/393
摘要： The presence of a radio frequency signature (88) on a cut sheet of print media (28) is detected by a radio frequency interrogating device (94) to determine it's relative left/right position on the print media (28). Either the leading edge (124) or trailing edge (126) of the print media (28) is detected by one or more print media sensors (86, 90). A print controller (24) can note the time (t1) when print media is detected and cause the radio frequency interrogating device (94) to detect the radio frequency signature (88) at a time (t2) when the print media has reached a predetermined point along the print media pathway (110). The position of the radio frequency signature (88) on the print media (28) can be calculated using the time differential (t2-t1) and the known angular displacement of the radio frequency interrogating device (94).
摘要翻译：通过射频询问装置（94）检测在打印介质（28）的切片上的射频签名（88）的存在，以确定其在打印介质（28）上的相对左/右位置。打印介质（28）的前缘（124）或后缘（126）都被一个或多个打印介质传感器（86,90）检测到。当检测到打印介质时，打印控制器（24）可以记录时间（t 1> 1），并且使得射频询问装置（94）一次检测射频签名（88）当打印介质已经到达沿着打印介质路径（110）的预定点时。射频签名（88）在打印介质（28）上的位置可以使用时间差（t 2 -T 1 -T 1）和已知的角位移的射频询问装置（94）。

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