Input paper sensor for single sheet paper processing equipment

Details Input paper sensor for single sheet paper processing equipment Input paper sensor for single sheet paper processing equipment

1995-01-31

1996-10-08

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

27125803, 355316, G03G 2100

Patent

active

055636861

ABSTRACT:
Paper processing equipment such as a laser printer uses a plurality of sensors to detect the presence of paper in the paper path of the equipment. In order to determine the nature of malfunctions indicated by presence or absence of paper at the sensors, data from the sensors is coordinated with information concerning the timing of the data. In one embodiment, a single data signal is used to provide information that a paper supply hopper is empty and that paper is present at an output of a paper sheet pick mechanism. Advantages include simpler operation and the provision of discrete display indicia for different types of malfunctions and paper out conditions.

REFERENCES:
patent: 3970384 (1976-07-01), Yamamoto et al.
patent: 4937622 (1990-06-01), Makiura
patent: 5262637 (1993-11-01), Cumberledge et al.
patent: 5262823 (1993-11-01), Nakajima et al.
patent: 5365322 (1994-11-01), Hamada et al.

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