Document size detecting device

Details Document size detecting device Document size detecting device

1991-04-11

1992-06-02

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355311, 355 75, G03G 1500

Patent

active

051191300

ABSTRACT:
A document size detecting device according to the invention is adapted to be mounted in an image forming device for a copying machine or the like, comprising an arm adapted to be folded and unfolded in operative association with the forward and backward movements, respectively, of the optical section of the image forming device, and a plurality of optical sensors attached to the arm at predetermined positions thereon corresponding to various format sizes of documents. When the arm moves to a document detecting position, a downwardly extending projection thereon moves onto a support member, thus supporting the arm at a predetermined position to keep the optical sensors at a predetermined distance from the document-supporting contact glass.

REFERENCES:
patent: 4456372 (1984-06-01), Yamauchi
patent: 4692019 (1987-09-01), Morimoto et al.
patent: 4814833 (1989-03-01), Matsushita et al.

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