Patent ID: 7336391

Claim:
A multi-exposure drawing method for drawing a pattern on a drawing surface, using an exposure unit including a plurality of optical modulation elements arranged in a matrix, the drawing method comprising: providing continuous constant relative movement between the exposure unit and the drawing surface in a predetermined direction defined by the matrix; and successively and selectively driving the optical modulation elements so as to repeat an exposure by successively modulating aligned optical modulation elements on the basis of a same bit datum whenever the exposure unit is moved by a distance corresponding to a uniform interval, whereby a pixel dot is produced on the drawing surface in a multi-exposure manner by successively-modulated light beams, the pixel dot comprising an area having at least a predetermined exposure level, wherein an exposure time for producing the pixel dot by each of the successively-modulated light beams is shorter than a time that is required to move the exposure unit by a distance corresponding to a size of an exposure zone.