| 摘要 |
There is provided an electronic copying apparatus which scans an original with a scanning laser beam, modulates an exposure laser beam with an electric signal corresponding to the light reflected from the original, applies the modulated laser beam onto a sensitive member of an electronic photograph processing unit, thereby providing a copy of the original. External data are superposed on the data corresponding to the electric signal, and the exposure laser beam is modulated according to the superposed data, thereby making a copy containing the external data in addition to the information on the original.
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