Patent ID: 7023462
Filing Date: 2006-04-04
Classification: B41J

Abstract:
1. A multibeam exposure device carrying out exposure processing by irradiating, onto an exposure surface of a photosensitive material, an exposure beam obtained by modulating, by a spatial light modulator and in accordance with an image to be exposed and formed, a light beam which is emitted from a light source, the multibeam exposure device comprising: an opening plate disposed on the exposure surface and blocking light which is other than an object of measurement of light quantity data at the spatial light modulator, an opening being formed in the opening plate, the opening allowing passage of the exposure beam which corresponds to a pixel which is an object of measurement of light quantity data at the spatial light modulator; a feeding operation mechanism moving the opening plate such that the opening is moved in a direction intersecting a scanning direction at a time of scan-exposure; and a light-receiving element measuring a light quantity of the exposure beam which passes through the opening.