| 摘要 |
PROBLEM TO BE SOLVED: To simplify the circuitry by providing means for altering allocation of an image data to drive elements depending on the fixing direction of a recording head thereby supplying the image data to each drive element regardless of the fixing direction of the recording head. SOLUTION: A DMAC 9 reading/writing various data including an image data to an RAM independently from the CPU in an image forming apparatus is provided with a counter 61 for counting clock signals and delivering the count, as a 6-bit count data, to a selector 64. The DMAC 9 is further provided with latch circuits 62, 63 outputting a 32 bit image data for ejecting ink selectively from respective nozzles in first and second groups while latching in synchronism with the clock signal. An image data of total 64 bit from the latch circuits 62, 63 is outputted serially bit by bit from the selector 64 based on the count data and a head direction flag from a register 65.
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