| http://www.w3.org/ns/prov#value | - However, there is a problem that, even if both the conveyance rollers are driven by one and the same driving motor, owing to a variety of factors such as the deviation of the diameter of the conveyance rollers and the transmission loss of the driving force, a minute difference is produced in the conveyance length between the conveyance rollers, which produces a slack of the recording medium, or ca
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