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1. 发明授权

US4204180A End of paper roll detection assembly 失效
标题翻译：纸卷检测组件末端
公开(公告)号：US4204180A
公开(公告)日：1980-05-20
申请号：US889673
申请日：1978-03-24
申请人： Kiyofumi Usui , Chihiro Otsuki , Sadaharu Inukai
发明人： Kiyofumi Usui , Chihiro Otsuki , Sadaharu Inukai
IPC分类号： G03B27/14 , B41J29/48 , B65H23/00 , B65H26/08 , G03G15/00 , H01H9/00 , B65H25/00 , G08B21/00
CPC分类号： B65H23/005
摘要： An end of paper roll detection assembly for detecting the end or near-end of a paper roll on a hollow core is provided. The end of paper roll detection assembly includes a detecting bar pivotally mounted on a retaining bar biased towards the side face of the paper roll which is supported on an adjustable paper roll retaining member. When paper is consumed the core is lowered towards the retaining member until the core is aligned with the detecting bar which passes into the hollow core thereby actuating a switch for generating a signal indicating that a predetermined amount of paper remains on the roll. The switch may be a reed switch closed by a permanent magnet secured to the retaining bar or a microswitch operated by the retaining bar. The retaining bar pivots towards the paper roll by action of a pulsating electro-magnet or a spring biasing the retaining bar towards the paper roll.
摘要翻译：提供了用于检测中空芯上纸卷的端部或近端的纸卷检测组件的一端。纸卷检测组件的端部包括可枢转地安装在保持杆上的检测杆，该保持杆朝向纸张的侧面偏压，该纸张支撑在可调节的纸卷保持构件上。当纸被消耗时，芯朝向保持构件下降，直到芯与检测棒对准，该检测杆进入中空芯，从而致动开关以产生指示预定量的纸留在卷上的信号。开关可以是由固定到保持杆的永磁体或由保持杆操作的微动开关闭合的簧片开关。保持杆通过脉动电磁体或弹簧将保持杆朝向纸卷偏压的方式朝向纸卷枢转。

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