Patent ID: 8750777
Filing Date: 2014-06-10
Classification: G03G

Abstract:
1. A fixing device comprising: an irradiation unit disposed opposite a recording medium having an unfixed image of an image-forming material capable of being thermally fixed, the irradiation unit including a plurality of laser light sources arranged in a direction crossing a movement direction of the recording medium and capable of emitting laser light with variable emission intensity, the irradiation unit irradiating a surface of the recording medium with the laser light emitted from the plurality of laser light sources in a substantially elongated irradiation region extending at a corresponding position in the arrangement direction of the plurality of laser light sources; an irradiation-width changing unit that changes the irradiation width of the irradiation region in a longitudinal direction thereof, with all the plurality of laser light sources of the irradiation unit turned on; and an irradiation-intensity adjusting unit that adjusts the irradiation intensity in the irradiation region having the irradiation width thereof changed by the irradiation-width changing unit to maintain a predetermined required irradiation intensity.