Patent ID: 8907999
Filing Date: 2014-12-09
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a laser light source configured to emit a laser beam according to a driving signal to expose a photosensitive member; a voltage detection unit configured to detect terminal voltage of the laser light source; a driving current supplying unit configured to supply a driving current to the laser light source; a current detection unit configured to detect a driving current value of the driving current supplied to the laser light source; and a control unit configured to specify an emission characteristic representing a correspondence relationship between the driving current value detected by the current detection unit and an amount of the laser beam emitted from the laser light source due to supply of the driving current, based on a correspondence relationship between the driving current value detected by the current detection unit and the terminal voltage detected by the voltage detection unit, and to control the driving current supplying unit based on the specified emission characteristic such that a current value exhibited at the start of the driving current being supplied is current overshot above a target current value and then the driving current being converged to the target current value with a predetermined time constant from the overshot current value is supplied to the laser light source.