Patent ID: 7597322
Filing Date: 2009-10-06
Classification: B65H

Abstract:
1. A conveyance apparatus which has a first conveyance roller and a second conveyance roller on a downstream side of the first conveyance roller in a conveyance direction, and conveys a sheet, comprising: a DC motor serving as a driving source for the first conveyance roller and the second conveyance roller; a first encoder which outputs a first pulse signal in accordance with rotation of the first conveyance roller; a second encoder which outputs a second pulse signal in accordance with rotation of the second conveyance roller; and a control unit having a first mode in which said DC motor is controlled on the basis of first information about the first pulse signal when executing a conveyance operation to convey the sheet by using the first conveyance roller and the second conveyance roller, and a second mode in which said DC motor is controlled on the basis of second information about the second pulse signal when executing a conveyance operation to convey the sheet by using the second conveyance roller, said control unit adjusting the second information on the basis of a relationship between a phase difference the first pulse signal between the second pulse signal before executing the second mode.