| 摘要 |
<p>PROBLEM TO BE SOLVED: To accurately reproduce concentration of a pixel on an image carrier with respect a pixel having an isolated pulse with a short pulse width of a PWM signal.SOLUTION: An image formation device comprises: an image formation part which forms a two-dimensional image by repeatedly scanning a plurality of laser beams on an image carrier; an image processing part which generates a pulse width modulation signal for controlling on/off of the plurality of laser beams on the basis of image data; a line buffer function part which has a plurality of line buffers for holding pieces of input data of a plurality of lines corresponding to the plurality of laser beams; and a pulse width modulation part which generates pulse width modulation signals of the plurality of lines from the pieces of input data of the plurality of lines. The line buffer function part cumulatively adds the value of concentration of a specific pixel to a corresponding pixel after the next line when the specific pixel whose concentration is equal to or less than a prescribed value exists in input data of a prescribed line.</p> |
