COLOR IMAGE FORMING APPARATUS

摘要

PURPOSE:To form a color image with more reduced memory capacity, by converting the color data of an image to a color number and forming an output color component image in accordance with the color number value developed by an image developing means. CONSTITUTION:A full page memory 4 is a bit map memory and can set a pallet data value at every image. A CPU clears a memory and subsequently analyzes the PDL data held to a PDL data memory 3 to develop the image indicated by said data on a full page image memory. At this time, the writing to a memory is performed on the basis of the pallet data corresponding to the color nearest to the color data indicated by the PDL data. RGB component data is inputted to an image processing circuit 33 to calculate one output color component data and this data becomes an image forming signal VOUT 27. The output of the image processing circuit 33 is applied to a gradation control circuit 34 and the data corrected in gradation by an LUT so as to correspond to the color reproducing density of a printer in the gradation control circuit 34 is inputted to a laser driver 10 and laser 11 is driven to form an image.