| 摘要 |
An image forming apparatus includes an image reading unit for reading a color image of original document and an image forming unit for forming a color reproduced image on an image forming medium based on the color image read by the image reading unit. In the image forming apparatus, the image reading unit firstly reads a first original document, which is regarded as a standard, to obtain a first color image. The first color image is converted into a plurality of first separate color signals corresponding to each of the color components of the first color image. The image reading unit also reads a second original document to obtain a second color image. The second color image is converted into a plurality of second separate color signals corresponding to each of the color components of the second color image. This image forming apparatus has a parameter calculation unit and a density conversion unit. The parameter calculation unit calculates density conversion parameters based on each of the first separate color signals and the density conversion unit converts each of the second color signals based on the density conversion parameters calculated by the parameter calculation unit into optimum color signals such that the reproduced image is formed on the image forming medium by the image forming unit with optimum density.
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