| 摘要 |
PURPOSE:To improve operability in a copying device in which an additional device or an additional function is incorporated by providing a means for detecting that image information exists on the 2nd surface of a document and a means for inverting the document. CONSTITUTION:The document D led in by a pickup roller 10b is guided to a timing roller 10c. At this time, the presence or absence of information included on the back surface of the copying surface of the document D is discriminated by an information detecting sensor 14 arranged between both rollers 10b and 10c. In the case of detecting that the information exists on the back surface, the document D is inverted by passing an inverting guide 10e and guided to the timing roller 10c again. |
