Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1987-03-06
1989-01-03
Grimley, A. T.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 14R, 355 55, 355 56, G03G 1500
Patent
active
047960566
ABSTRACT:
A main body 1 of an electrophotographic copying machine has feed openings to which a plurality of cassettes 20 and 21 for containing paper of different sizes are attached. The sizes of paper and setting directions of paper are detected by microswitches 410 to 413 and 414 to 417. A document feeding unit 300 is placed on the main body 1 and while a document is fed to an exposure position by means of the document feeding unit 300, the size of the document is detected by a sensor 310. In an automatic paper selection mode, even if paper does not exist in a selected feed opening, it is determined whether paper suited to be used, taking into account the size of the document and the magnification, exists in any other feed openings. If it exists in any one of the feed openings, this opening is selected. If it does not exist in any of the feed openings, copy operation is forbidden and a microprocessor 201 of the main body 1 is programmed to display the forbidden state. This forbidden state can be cancelled by changing the magnification or by supplying paper.
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IBM Technical Disclosure Bulletin, vol. 17, No. 9, Feb. 1975, "Copy Sheet Size Selection," by J. L. Bacon.
Grimley A. T.
Minolta Camera Kabushiki Kaisha
Smith John G.
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