Patent ID: 9164473
Filing Date: 2015-10-20
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a dustproof shutter openably and closably supported in a case so as to protect an exposure device from dust; a lock lever configured to lock a cover openably and closably provided in the case, and provided to be movable in an opening direction of the cover; a shutter lever provided at a position coming into contact with the lock lever and the dustproof shutter in a state where the cover is closed; an elastic member configured to bias the shutter lever toward the lock lever, a dustproof side elastic member configured to bias the dustproof shutter in a closing direction; and a turning shaft configured to turnably support the shutter lever, wherein the shutter lever has an inclined cam face coming into contact with the lock lever and a pressing face coming into contact with the dustproof shutter, the shutter lever is provided to be movable between a first position to open the dustproof shutter when the cover is locked and a second position to close the dustproof shutter when the cover is unlocked by moving the lock lever in the opening direction of the cover with assistance from a biasing force of the elastic member that is configured to bias the shutter lever toward the lock lever, the lock lever relatively slides on the inclined cam face, and the dustproof shutter is moved in a closing direction by a biasing force of the dustproof side elastic member with a pressing force from the pressing face being released as the shutter lever moves from the first position to the second position.