| 摘要 |
<P>PROBLEM TO BE SOLVED: To print with constant density characteristics at all times regardless of an apparatus durability. <P>SOLUTION: When the present total printing number of sheets is acquired, the acquired present total printing number of sheets is stored in a RAM 216, and a printing density corresponding to the total printing number of sheets is taken out from a printing number of sheets to a printing density table of a data ROM 219 and is stored in the RAM 216. Then, a dither table corresponding to the taken out printing density is searched from the data ROM 219 and stored in the RAM 216. A binarization process is carried out with the use of the obtained dither table. <P>COPYRIGHT: (C)2004,JPO |
