Electrophotographic copier including means for sensing the size

Details Electrophotographic copier including means for sensing the size Electrophotographic copier including means for sensing the size

1988-03-15

1989-10-10

Grimley, Arthur T.

Photocopying

Contact printing

Light boxes

355311, G03G 1504

Patent

active

048735507

ABSTRACT:
An electrophotographic copier of the type moving an original document and optics relative to each other to expose a photoconductive element imagewise via the optics to thereby form a latent image on the photoconductive element, developing the latent image to produce a visible image, and transferring the visible image to a paper sheet. The size of an original document which is positioned on a glass platen with one corner portion of the glass platen as a reference is sensed, and a lens included in the optics is displaced in response to the document size sensed. A paper sheet is transported with its center with respect to the widthwise direction registered aligned with the center of an image which is provided on the photoconductive element.

REFERENCES:
patent: 4209248 (1980-06-01), Gibson et al.
patent: 4585332 (1986-04-01), Shenoy
patent: 4696564 (1987-09-01), Watanaba
patent: 4782361 (1988-11-01), Spinelli et al.

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