| 摘要 |
An endless belt drive controlling apparatus includes an endless belt and its drive unit, a first detector that detects a belt mark, a second detector that detects a detected angular displacement error of an encoder generated due to a variation in a thickness of the endless belt, a first calculating unit that calculates a phase and a maximum amplitude of the endless belt at the belt mark based on the detected angular displacement error of the encoder thus obtained, and a second calculating unit that calculates a position of the endless belt at which the detected angular displacement error is a minimum from the phase stored in a nonvolatile memory. The drive unit controls the endless belt so that the portion thereof at which the detected angular displacement error is the minimum is stopped at one of the rollers at which a highest tension is applied to the endless belt when the driver issues a belt stop command.
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