Patent ID: 6831674
Filing Date: 2004-12-14
Classification: B41J

Abstract:
An image recording apparatus for recording an image on a recording medium by exposure, comprising:a light modulator having a plurality of light modulator elements of diffraction grating type, in each of said plurality of light modulator elements strip-like fixed reflection surfaces and strip-like moving reflection surfaces being alternately arranged; a light source for emitting a light with which said light modulator is irradiated; a holding part for holding a recording medium on which an image is recorded with signal beams from said light modulator; a transfer mechanism for transferring said holding part relatively to said light modulator; a detection circuit for detecting whether or not there is a transition of each of said plurality of light modulator elements from a state where the amount of sag of said moving reflection surfaces is large with respect to a change in driving voltage to a state where said amount is small; and a control circuit for temporarily supplying each of light modulator elements on which said transition is detected with an auxiliary driving voltage between a driving voltage on non-emission of a signal beam and a driving voltage on emission of a signal beam.