| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus that performs a processing of supplying a colorant for each color, and an image forming apparatus that can readily perform a correction processing with respect to the so-called registration shift occurring due to the processing of supplying a colorant, without degrading the image quality. SOLUTION: The image forming apparatus that uses a plurality of colorants for image formation and performs the image formation on the basis of bitmap data in which each pixel has a gradation value of each color of the colorants, includes a correction means which executes a correction processing of correcting gradation values with respect to at least some pixels in which a gradation value of the colorants other than that of black color is 0 and a gradation value of the colorant of black color is not 0 in the bitmap data, wherein the correction means executes different processing between a case in which the gradation value of black color of the bitmap data of the pixel that is a processing object is a maximum value and a case in which this gradation value is less than the maximum value. COPYRIGHT: (C)2009,JPO&INPIT
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