| 摘要 |
The CPU counts the number of printings made with use of a photosensitive member so as to monitor the usage of the photosensitive member. When executing printing, the CPU determines a modulating rate, which is based on the reducing rate and some correction of the rate in accordance with the usage of the photosensitive member, with reference to a table. The CPU sets the determined modulating rate to the pulse modulating section. The pulse modulating section executes pulse modulation at the set modulating rate, and thus generates video data used for the printing operation of the print processing section.
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