| 摘要 |
Disclosed is an image forming apparatus which makes it possible to achieve an increase in printing speed and a reduction in power consumption in an image forming apparatus using multi-value printing data. The image forming apparatus has an analysis device (CPU 1) for analyzing multi-value printing data and detecting the density distribution, and a switching device (CPU 1) for switching between a multi-value printing mode in which multi-value printing is performed and a black-and-white printing mode in which printing is performed by reducing the number of levels of gray as compared with the multi-value printing mode, wherein the analysis device analyzes multi-value data, and wherein it is determined that the apparatus is in the black-and-white mode when the density distribution is such that there are only low density and high density, printing being performed after switching from the multi-value printing mode to the black-and-white printing mode by the switching means.
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