| 摘要 |
PURPOSE:To utilize memory capacity by providing a photoelectric converter which receives light transmitted through the loading surface for a document and by using the output of said photoelectric converter as a document size detection signal. CONSTITUTION:Laser beam light l0 emitted from laser oscillator 1 is made into scanning beam light l3. Reflected light from document P is received by light guide 20 and guided to photoelectric converter 22. The output of converter 22 is supplied to mask circuit 24. Photoelectric converter 25 outputs an electric signal which shows the width of document P. This signal is supplied to mask circuit 24 in order to mask the video signal of converter 22. Therefore, circuit 24 outputs the video signal that corresponds to document P. Thus, only picture information on document P is stored on a rocording medium, such as an optical disk memory, so that the memory capacity can be utilized effectively. |
