Patent ID: 8306456
Filing Date: 2012-11-06
Classification: G03G

Abstract:
1. A belt device, comprising: an endless belt; a plurality of rollers on which the belt is mounted and including a drive roller connected to a specified drive source and rotating the belt and a belt meandering correction roller correcting the meandering of the belt in a width direction of the belt; a sensor detecting the position of an end surface of the belt in a sensor detection area divided into a plurality of zones adjacent in the belt width direction; a roller position adjusting mechanism adjusting the position of the belt meandering correction roller to correct the meandering of the belt; and a controller controlling the roller position adjusting mechanism based on the position detection of the belt end surface by the sensor, wherein the roller position adjusting mechanism moves the position of the belt end surface in a first direction or a second direction opposite to the first direction along the belt width direction through the belt meandering correction roller; the controller controls the roller position adjusting mechanism in such a manner that the roller position adjusting mechanism moves the belt end surface in the second direction after the belt end surface moves in the first direction to keep the belt end surface in a specific one of the plurality of zones.