| 摘要 |
A copying apparatus has a paper size automatic selection function for automatically selecting papers of any desired size in a plurality of available sizes. The copying apparatus is provided with a plurality of paper supply cassettes each accommodating a plurality of copy papers, an original size detector sensor for detecting the size of an original document to be copied, a plurality of copy paper size detector switches for detecting the size of the copy papers accommodated in the paper supply cassettes, a plurality of magnification setting keys for setting a desired magnification ratio, a plurality of reference tables, a plurality of selector switches for selecting a desired reference table in accordance with the detected size of the original document and a control system. Each of the reference tables indicates the relationship among sizes of original documents, magnification ratios and sizes of copy papers. The control system includes a plurality of microprocessors for determining the size of copy papers appropriate to the detected size of the original document to be copied and the selected magnification ratio on the basis of the selected reference table so that the copy papers of the desired size may be supplied from the selected paper supply cassette.
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