公开(公告)号：US4745288A

公开(公告)日：1988-05-17

申请号：US897257

申请日：1986-08-18

申请人： John Hurley ,  Paul W. Bergland ,  James D. Parker ,  Mark G. Blonigen

发明人： John Hurley ,  Paul W. Bergland ,  James D. Parker ,  Mark G. Blonigen

IPC分类号： B65H23/04 ,  G06K7/10 ,  G01N21/86 ,  G01V9/04

CPC分类号： G06K7/10851 ,  B65H23/046

摘要： A registration controller for sensing the presence and location of registration marks on a web as the web passes a scanner, and for generating a signal for use in controlling downstream operations such as cutting and/or printing operations. The controller includes a light source located remotely from the scanner. Light from the source is directed to the scanner and onto the web. The web reflects the light, the amount and intensity of the reflection depending upon the color and reflectivity of the particular area of the web on which the light is being currently directed. The reflected light is directed to a photo receptor which converts the reflected light to an analog electric signal, the level of the signal being determined by the amount and intensity of reflected light, within a particular predetermined range. This analog electric signal is then amplified, processed and converted to a digital signal for use in controlling the aforementioned downstream operations. If the electric signal is greater than a predetermined level, as would be the case if the web surface is a reflective one, such as a foil surface, the processing circuitry clamps the signal and prevents it from exceeding that predetermined level. The preferred means for directing the source light to the scanner and for directing the reflected light to the receptor is fiber optics.

摘要翻译： 一种登记控制器，用于在网络通过扫描仪时感测网络上的对准标记的存在和位置，并且用于生成用于控制诸如剪切和/或打印操作的下游操作的信号。 控制器包括远离扫描仪的光源。 来自光源的光被引导到扫描仪和网页上。 卷筒纸反射光线，反射的量和强度取决于光线当前被引导的纤维网的特定区域的颜色和反射率。 反射光被引导到光接收器，其将反射光转换为模拟电信号，信号的电平由反射光的量和强度确定在特定预定范围内。 然后将该模拟电信号放大，处理并转换为数字信号，以用于控制上述下行操作。 如果电信号大于预定水平，则如同腹板表面为箔表面的情况一样，处理电路夹紧信号并防止其超过预定水平。 用于将源光引导到扫描器并将反射光引导到受体的优选方式是光纤。