IMAGE FORMING APPARATUS, METHOD OF CONTROLLING TENSION OF RECORDING MEDIUM

摘要

An image forming apparatus includes a control unit that applies a tension to a recording medium in a first region between a rotational shaft and a driving roller using a torque applied to the rotational shaft and the driving roller, and applies a tension to the recording medium in a second region where a support member supports the recording medium using a torque applied to the driving roller and a holding unit. The control unit selectively executes an image forming mode where the head is caused to execute image forming by applying a tension to the recording medium in the second region while applying a tension to the recording medium in the first region, and a medium detaching mode where the tension in the first region is released when the recording medium is stopped, while applying a tension for detaching a medium to the recording medium in the second region.

主权项

1. An image forming apparatus comprising:
a rotational shaft which detachably holds a recording medium which is wound in a roll shape; a support member which supports the recording medium which comes out from a portion wound in the roll shape; a head which faces the support member, and performs image forming on the recording medium which is supported by the support member; a driving roller which winds up the recording medium between the rotational shaft and the support member; a holding unit which holds the recording medium by winding up the recording medium on a side opposite to the driving roller with respect to the support member; and a control unit which applies a tension to the recording medium in a first region between the rotational shaft and the driving roller using a torque which is applied to the rotational shaft and the driving roller, and applies a tension to the recording medium in a second region in which the support member supports the recording medium using a torque which is applied to the driving roller and the holding unit, wherein the control unit selectively executes an image forming mode in which the head is caused to execute image forming by applying a tension for image forming to the recording medium in the second region while applying a tension to the recording medium in the first region, and a medium detaching mode in which the tension of the recording medium in the first region is released in a state in which the recording medium is stopped, while applying a tension for detaching a medium which is smaller than the tension for image forming to the recording medium in the second region.