专利名称：Method and device for the detection of a
substrate edge in a printing machine
发明人：Thomas Jacobsen,Wolfgang Kuphaldt,Joerg
Zessin
申请号：US13320808申请日：20100415公开号：US08760667B2公开日：20140624
专利附图：
摘要：The present invention relates to a method and a device for the detection of asubstrate edge in a printing machine comprising a substrate transport unit that defines a
substrate transport path (). In this method, at least one light value of a first section of asensor line () and a dark value of a second section of the sensor line are determined, anda threshold value is calculated based thereon. When the threshold value on one pixel isexceeded and the threshold value on another pixel is not reached, it is possible tocalculate a position of the substrate edge. The device comprises a light source
arrangement () for generating diffuse light, and comprises a sensor line for the detectionof light from the light source arrangement. Furthermore, a gradient lens arrangement ()is provided, said gradient lens arrangement being arranged between the light source andthe sensor line in such a manner that, on the one hand, a focus is located on a centralposition of the substrate transport path between the light source and the gradient lensarrangement, and, on the other hand, on the sensor line.
申请人：Thomas Jacobsen,Wolfgang Kuphaldt,Joerg Zessin
地址：Kiel DE,Flintbeck DE,Ascheberg DE
国籍：DE,DE,DE
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