| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost of a printer while increasing the printing speed thereof. SOLUTION: A part requiring real time processing and high speed processing in the processing executed in a printer 3, that is, the processing receiving image data from a host 1 to accumulate the same in a receiving buffer 21 and reading the image data from the receiving buffer 21 to perform expansion, edge smoothing or the correction of gradation to send the same to a printing engine 27 in matching relation to the printing speed of the printing engine is executed by exclusive hardware circuits 11, 13, 15, 17, 19 but not by a CPU 23. The CPU 23 performs a part not requiring high speed processing but requiring flexible processing, for example, the state monitor of the printing engine 27, the control of printing start, the number of printing sheets or the calculation of toner consumption quantity.
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