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1. 发明授权

US4609815A Paper hole detecting apparatus with slidable reflector 失效
标题翻译：带有可滑动反射镜的纸孔检测装置
公开(公告)号：US4609815A
公开(公告)日：1986-09-02
申请号：US471610
申请日：1983-03-03
申请人： Hiroshi Hishinuma , Masao Miyasaka , Kenji Okada , Shuichi Morio
发明人： Hiroshi Hishinuma , Masao Miyasaka , Kenji Okada , Shuichi Morio
IPC分类号： B41J11/42 , B65H7/14 , G01V9/04
CPC分类号： B65H7/14 , B41J11/42
摘要： An apparatus for detecting a feeding of paper has a reflector which is mounted on a bottom of a switch lever. The switch lever, in turn, is slidably mounted on black paper retainer plate which has poor reflecting properties, and a light emitting element emits light which is reflected by the paper towards a light receiving element. When paper which has good reflecting properties is being fed, the reflector is slid so that it is no longer located opposite the light emitting element, and any light passing through holes in the paper is thus poorly reflected by the black paper retainer plate, thereby enabling the light receiving element to readily detect the presence or absence of a hole in the paper. However, when the paper being fed has poor reflecting properties, the reflector is slid so that it is located opposite the light emitting element, and any light passing through one of the holes in the paper is strongly reflected by the reflector. Therefore, again, the light receiving element can readily detect the presence or absence of the holes.
摘要翻译：用于检测纸张进给的装置具有安装在开关杆的底部上的反射器。开关杆又可滑动地安装在具有差的反射特性的黑纸保持板上，并且发光元件发射被纸张朝向光接收元件反射的光。当馈送具有良好反射特性的纸张时，反射器被滑动，使其不再位于与发光元件相对的位置，并且通过纸中的孔的任何光因此被黑纸固定板很弱地反射，从而使得光接收元件容易地检测纸中孔的存在或不存在。然而，当被送入的纸具有差的反射特性时，反射器被滑动以使其位于与发光元件相对的位置，并且通过纸中的一个孔的任何光被反射器强烈地反射。因此，再次，光接收元件可以容易地检测孔的存在或不存在。

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