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公开(公告)号：US4397460A
公开(公告)日：1983-08-09
申请号：US280756
申请日：1981-07-06
IPC分类号： B65H7/12 , B65H7/14 , G06K13/067
CPC分类号： B65H7/125 , G06K13/067 , B65H2553/412 , B65H2701/1912
摘要： An overlapped document detector for a document handling apparatus comprises an air knife in the primary document path to separate overlapped documents and forward them along separate ones of two secondary paths. Optical detectors focused on each secondary path, detects documents to detect an overlapped condition. A vacuum is created to maintain the documents in their respective secondary paths for detection purposes.
摘要翻译： 用于文件处理装置的重叠文件检测器包括主文件路径中的气刀以分离重叠的文档并沿着两个次要路径中的独立路径转发它们。 聚焦在每个次级路径上的光学探测器检测文件以检测重叠状态。 创建真空以将文件维持在它们各自的次要路径中用于检测目的。
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公开(公告)号：US4905110A
公开(公告)日：1990-02-27
申请号：US173619
申请日：1988-03-25
CPC分类号： G11B25/043 , G11B19/2009 , G11B33/14 , H02K21/22 , H02K29/08
摘要： An improved spindle motor is provided for rotatably driving one or more memory storage disks in a computer disk drive or the like. The spindle motor comprises a stator shaft having opposite ends anchored to a disk drive housing, and a cylindrical rotor hub supported by bearings from the stator shaft for relatively high speed rotation. The stator shaft carries an armature in magnetically coupled relation with a high strength unitary permanent magnet sleeve carried by the rotor hub, with the number of armature poles and permanent magnet poles being mismatched to achieve low cogging motor operation. The memory disks have central openings therein and are mounted about the rotor hub for rotation during motor operation. Axially elongated resilient shim strips disposed about the rotor hub insure initial disk alignment with their inner diameter edges spaced from direct contact with the rotor hub, thereby permitting the hub and/or disks to accommodate normal thermal gradients during operation without positional shifting of the disks with respect to each other.
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公开(公告)号：US4220084A
公开(公告)日：1980-09-02
申请号：US958478
申请日：1978-11-07
CPC分类号： G07B17/00508 , B41L21/02 , B41L35/06
摘要： As documents are moved serially past a servo motor-driven endorser, it endorses a stamp upon each. A transport signal dependent on document speed, and an endorser signal generated by an optical tachometer mounted to the servo motor, provide input to a frequency comparator. The output of the comparator is a control signal which controls the servo motor speed to adjust the endorser rotational surface velocity to equalization with the document speed. Logic circuitry sets the endorser at a zero angular position. Responsive to an endorse command, the endorser is accelerated to document speed, receives ink from a supply roller, then endorses the passing document. A counter and a digital comparator in cooperation with the tachometer signal completion of the endorsement whereupon the endorser is decelerated and placed in the zero position. Should a succeeding endorse command occur prior to complete deceleration, acceleration is resumed after a delay count given by a PROM and based upon the pulse count when the succeeding endorse command is received.
摘要翻译： 随着文件连续移动通过伺服电机驱动的支持者，它会在每一个上签署一个印章。 取决于文档速度的传输信号和由安装到伺服电动机的光学转速计产生的支持者信号向频率比较器提供输入。 比较器的输出是一个控制信号，控制伺服电机的转速，以便将记号转盘旋转速度调节到文档速度均衡。 逻辑电路将支持者置于零角位置。 响应一个认可的指令，代理人加速记录速度，从供应辊接收墨水，然后批准经过的文件。 一个计数器和一个数字比较器与转速表信号协调完成后，代言人减速并放置在零位置。 如果在完全减速之前发生后续的认可命令，则在由PROM给出的延迟计数之后并且当接收到后续认可命令时基于脉冲计数恢复加速度。
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