Patent ID: 7079169
Filing Date: 2006-07-18
Classification: B23K,B29C,B33Y,B41J,D06L,D06M,G02B,G03F,H04N

Abstract:
1. A method of exposing according to an input image data using an exposure head including a laser device, a spatial light modulator in which plural pixel portions are two-dimensionally arranged on a substrate, a control mechanism, and an optical system, and in which the exposure head is relatively moved in a direction that is orthogonal to a predetermined direction with respect to an exposure surface, the exposure method comprising: irradiating a laser beam by the laser device; controlling each of a number of the plural pixel portions that is fewer than a total number of the pixel portions arranged on the substrate using control signals generated according to exposure information; modulating the irradiated laser beam with the spatial light modulator by changing a light modulation state of the plural pixel portions according to respective control signals; and focusing the laser beam modulated at each pixel portion with the optical system onto the exposure surface.