Regulation device, image forming apparatus using the same, and a method thereof

摘要

An image forming apparatus is provided. The image forming apparatus, in a case in which a toner on a transfer belt is checked through a sensing unit, is capable of preventing a rotation of a guide roller, which is configured to guide the transfer belt, by use of a regulation device, so that a check error occurring due to vibration of the guide roller is reduced. Thus, the toner on the transfer belt is checked with increased accuracy and precision.

主权项

1. An image forming apparatus comprising:
a transfer belt configured to transfer a visible image developed by a developing unit on a printing medium; a guide roller configured to guide the transfer belt by supporting one side of an inner surface of the transfer belt; and a regulation device configured to regulate a rotation of the guide roller, wherein at least a part of the regulation device being movable to regulate the rotation of the guide roller, and wherein at least a part of a regulation member is coupled to the guide roller by moving in a first longitudinal direction, and is separated from the guide roller by moving in a second longitudinal direction opposite to the first longitudinal direction.