| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sensor chip from being broken, even if only one sensor chip is used. SOLUTION: A sensor chip is provided with a group of photoelectric transfer elements for converting light signals from a medium to be read to electrical signals and reads out the electrical signals, which are converted by the photoelectric transfer elements or signals according to these signals. The sensor chip is placed on a support board, which is provided with a driver for controlling the drive of the sensor chip.
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