Image processing apparatus, rotation control method for motor, and computer-readable recording medium

摘要

An image processing apparatus includes: a transport roller for transporting a sheet subjected to image processing; a motor that drives the transport roller to rotate; and a speed reduction unit that performs a speed reduction control on the motor to temporarily stop the sheet, the speed reduction control being performed in a manner that a stopping time and a stopping distance each satisfy a corresponding target range, wherein the speed reduction control includes: a first control that is a control of reducing a rotation speed of the motor to a reference speed through at least two operations from among a braking operation, a powering operation, and a free running operation; and a second control that is a control of, after a rotation amount of the motor from the start of the speed reduction control reaches a reference value, continuously performing the braking operation until the stop of the motor.

主权项

1. An image processing apparatus including a transport roller for transporting a sheet subjected to image processing, the image processing apparatus comprising:
a motor configured to drive the transport roller to rotate; and a speed reduction unit configured to perform a speed reduction control on the motor to temporarily stop the sheet that is being transported, the speed reduction control being performed in a manner that a stopping time and a stopping distance each satisfy a corresponding target range, the stopping time being a time period from a start of the speed reduction control to a stop of the sheet, and the stopping distance being a distance traveled by the sheet from the start of the speed reduction control to the stop of the sheet, wherein the speed reduction control includes a first control and a second control following the first control, the first control is a control of reducing a rotation speed of the motor to a reference speed through at least two operations from among a braking operation, a powering operation, and a free running operation, the at least two operations including the braking operation, and the reference speed being a speed lower than a rotation speed Vct that is a speed of the motor at the start of the speed reduction control, and the second control is a control of, after a rotation amount of the motor from the start of the speed reduction control reaches a reference value, continuously performing the braking operation until the stop of the motor.