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1. 发明授权

US5746133A Postage meter with rotor movement and die cover sensor 失效
标题翻译：具有转子运动和模具盖传感器的邮资计
公开(公告)号：US5746133A
公开(公告)日：1998-05-05
申请号：US446218
申请日：1995-05-22
申请人： Benedikt Widmer , Martin Muller , Daniel Fluckiger , Christian Moy , Philippe Chollet
发明人： Benedikt Widmer , Martin Muller , Daniel Fluckiger , Christian Moy , Philippe Chollet
IPC分类号： B41K3/12 , G07B17/00 , B41F1/66
CPC分类号： G07B17/00193 , B41K3/121 , G07B2017/00233
摘要： A postage meter has an improved means of monitoring the position of the cover providing access to the print rotor. A mechanical latch and associated mechanism is provided responsive to a cam on the print rotor and responsive to the movement of the cover, and the mechanism has an electrical sensor output to the processor of the postage meter. In the event that the cover is opened at a time when the rotor is away from its home position, for example at a time when the power to the meter has failed, the latch enters a latched state. Upon the restoration of power the meter determines if the rotor is away from its home position, and if it is, the meter inspects the sensor output to determine if the latch has been caused to enter its latched state. This condition is annunciated, for example by rendering the meter incapable of printing postage. The meter has a hardware circuit external to the processor which receives as an input at least one signal indicative of rotation of the print rotor, and which counts the rotations. The circuit also receives a reset signal from the processor which, it is assumed, will be provided if the processor is functioning normally but will not be provided in the event of processor malfunction. If the counter reaches a predetermined threshold the circuit halts the print motor.
摘要翻译：邮资计具有改进的方式来监视盖子的位置，提供对打印转子的访问。响应于打印转子上的凸轮并且响应于盖的移动而提供机械闩锁和相关联的机构，并且机构具有输出到邮资计费器的处理器的电传感器。如果盖子在转子远离其原始位置时被打开，例如在仪表的电源发生故障的时候，闩锁进入锁定状态。在电源恢复时，仪表确定转子是否远离其原始位置，如果是，仪表检查传感器输出，以确定闩锁是否已经进入其锁定状态。这个条件被通知，例如通过使仪表不能打印邮资。仪表具有处理器外部的硬件电路，其接收指示打印转子旋转的至少一个信号作为输入，并计数转动。该电路还从处理器接收复位信号，如果处理器正常工作，但是在处理器故障的情况下将不会提供复位信号。如果计数器达到预定阈值，则电路停止打印电机。

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