Reflective sheet detector

Details Reflective sheet detector Reflective sheet detector

2007-07-30

2010-02-02

Joerger, Kaitlin S (Department: 3653)

Sheet feeding or delivering

Feeding

By means to convey sheet

C356S445000, C356S446000, C250S239000

Reexamination Certificate

active

07654525

ABSTRACT:
A reflective sheet detector includes first and second guide plates constituting a sheet travelling path, an emitter, a receiver and a reflecting portion. The emitter is disposed on a first side of the sheet travelling path and close to a first input opening of the first guide plate. The receiver is disposed on the first side and close to a first output opening of the first guide plate. The reflecting portion is disposed on a second side of the sheet travelling path opposite the first side and is close to the second guide plate. The emitter outputs a signal to the reflecting portion through the first input opening and a second input opening of the second guide plate, and the reflecting portion reflects the signal to the receiver through a second output opening of the second guide plate and the first output opening.

REFERENCES:
patent: 3461302 (1969-08-01), Benson et al.
patent: 5139339 (1992-08-01), Courtney et al.
patent: 5262637 (1993-11-01), Cumberledge et al.
patent: 7018121 (2006-03-01), Barry et al.
patent: 2005/0201808 (2005-09-01), Barry et al.

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