Recorders – Record receivers and/or driving means therefor
Patent
1991-06-05
1994-03-01
Grimley, A. T.
Recorders
Record receivers and/or driving means therefor
250560, 355311, 355316, G01D 1524, G01D 1526, G01D 1534
Patent
active
052912256
ABSTRACT:
A paper size determination device comprises a paper sensor for detecting paper passing a preset position on a feeding path and generating a detection signal, and a processing circuit for measuring the generation period of the detection signal supplied from the paper sensor and determining the paper size according to the generation period measured. The processing circuit of the determination device includes a step counter for measuring and holding time data on the generation period of the detection signal, in response to the detection signal generated from the paper sensor, a mode counter circuit for detecting that the step counter has completed the measurement and generating a measurement completed mode, and a data processor for detecting that the measurement completed mode has been set and determining the paper size according to the time data held by said step counter.
REFERENCES:
patent: 4060907 (1977-12-01), Van Hook
patent: 4552065 (1985-11-01), Billington et al.
patent: 4707111 (1987-11-01), Inuzuka et al.
patent: 4763164 (1988-08-01), Ariga et al.
patent: 4937622 (1990-06-01), Makiura
IBM Technical Disclosure Bulletin, vol. 18, No. 2, Jul. 1975, pp. 330-331 Church et al, "Dynamic Sheet Length Sensing".
Grimley A. T.
Royer William J.
Tokyo Electric Co. Ltd.
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