BELT DRIVING MECHANISM, IMAGE FORMING APPARATUS INCLUDING THE SAME, AND BELT DRIVING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a belt driving mechanism to perform a reciprocating motion, capable of preventing the occurrence of an impact sound using a very simple configuration without decreasing a belt moving speed.;SOLUTION: The belt driving mechanism includes: a toothed drive pulley to rotate actively; a toothed driven pulley to rotate passively; a toothed belt to engage with the toothed drive pulley and the toothed driven pulley by tooth on an inner circumference thereof; and an elastic member to move the toothed belt in a returning direction by an elastic force accumulated while the toothed belt is moved in a going direction, wherein at least one of the toothed belt, the toothed drive pulley, and the toothed driven pulley is formed such that at least one of tooth bottoms is shallower than at least other one of the tooth bottoms.;COPYRIGHT: (C)2009,JPO&INPIT