Image forming apparatus and document size determination...

Details Image forming apparatus and document size determination... Image forming apparatus and document size determination...

2006-09-12

2006-09-12

Yan, Ren (Department: 2854)

Electrophotography

Document handling

Original

C399S376000, C358S449000

Reexamination Certificate

active

07107003

ABSTRACT:
A image-forming apparatus has a light projection unit for projecting light onto a document. A reflection plate having a predetermined pattern corresponding to a size of the document reflects the light projected onto the document. The light reception unit receives the reflected light and forms an image. A control unit determines the size of the document based on the width of the document according to the pattern appearing on the image. When photocopying documents of several sizes using an automatic document feeder, documents are sorted based the document sizes and therefore, the documents can be read out at once without requiring re-setting of the image forming apparatus for different document sizes.

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