| 摘要 |
An image forming apparatus and method outputs an image in a pure monochromatic color as opposed to forming the monochromatic color from a combination of colors. The image forming apparatus includes a controller to receive image data represented by a combination of red, green and blue data, among others, to determine whether the received image data are image data corresponding to a monochromatic color, such as black, a converter to convert the image data into cyan, magenta, yellow, and black data, among other color schemes, when the image data are image data corresponding to the monochromatic color, a halftoning processor to compare color information items of the converted cyan, magenta, yellow, and black data with color information items in previously established halftone tables to output and store resultant values of cyan, magenta, yellow, and black, and an extractor to extract a resultant value of black, when the monochromatic color is black, from among the stored resultant values of cyan, magenta, yellow, and black.
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