Transport item detecting arrangement

Details Transport item detecting arrangement Transport item detecting arrangement

1984-12-13

1986-02-18

Prescott, A. C.

Photocopying

Including fiber optics

355 14R, 355 14SH, 356229, 271258, G03G 1500

Patent

active

045710554

ABSTRACT:
The disclosure is directed to a detecting arrangement for detecting presence or absence of an item to be transported, for example, a paper sheet or the like, which includes a light emitting element and a light receiving element disposed to confront a transport passage as a sensor for detection of the item to be transported along the passage. The detecting arrangement is characterized in that there are further provided a comparing circuit for comparing a signal responding to an output of the sensor with an integrated signal from an integrating circuit of an output of the sensor, thereby to employ a signal based on the result of the comparison as a signal indicating presence or absence of the item to be transported.

REFERENCES:
patent: 3654893 (1972-04-01), Piper et al.
patent: 3922380 (1975-11-01), Rowell et al.
patent: 3969114 (1976-07-01), Prats
patent: 4235550 (1980-11-01), Case
patent: 4304486 (1981-12-01), Cormier et al.
patent: 4341460 (1982-07-01), Kohyama
patent: 4372672 (1983-02-01), Pries
patent: 4417804 (1983-11-01), Werner, Jr.

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