| 摘要 |
PURPOSE:To write various data with a high density without generating a read error at the time of read by flickering other light source in accordance with write information which has been inputted, by synchronizing with flickering a timing use light source. CONSTITUTION:The title device is provided with at least two or more light sources 130-132 which can emit a light beam independently for exposing a part of a film so as not to be superposed to each other, and a control means 150 for flickering continuously at least one light source of each light source 130-132, as a timing use light source 132, at the time of feeding the film, and also, flickering other light sources 130, 131 in accordance with write information which has been inputted, by synchronizing with flickering of the timing use light source 132. Even of an uneven feed, etc., are generated at the time of feeding the film and a physical length of a data of 1 bit which is written in the film actually is varied, its correction can be executed by a write part which has been written by the timing use light source 132 at the time of read. In this way, a written data can be reproduced without being influenced by an uneven feed of the film.
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