Patent ID: 8208842
Filing Date: 2012-06-26
Classification: G03G

Abstract:
1. A belt driving control device comprising: an endless belt looped over a plurality of supporting rollers; a driving source configured to supply rotational driving force to one of the plurality of supporting rollers; a detecting section configured to detect a periodical thickness deviation of the endless belt in a circumferential direction of the endless belt, and carry out data sampling for detection of the thickness deviation simultaneously with rotation of the endless belt; a memory configured to store data on the thickness deviation of the endless belt obtained based on the data sampling; and a control section configured to control drive of the driving source such that the detected thickness deviation of the endless belt by the detecting section is canceled out based on the data on the thickness deviation stored in the memory, and such that the endless belt is driven to travel one rotation upon detecting a time when the belt driving control device reverts from power saving mode even if the travel of the endless belt for one rotation is not needed for a printing purpose so as to carry out the data sampling for one rotation and update the data stored in the memory with new data obtained based on the data sampling.