发明名称 |
PRINT APPARATUS AND METHOD OF CONTROLLING THE SAME, AND STORAGE MEDIUM AND CARTRIDGE |
摘要 |
A print apparatus having a photosensitive drum used for color printing. In the apparatus, the number of sheets on which color printing has been performed and the number of sheets on which monochrome printing has been performed are obtained. It is determined whether or not the lifetime of the photosensitive drum used for color printing has expired based on a threshold value determined based on the ratio between the number of sheets on which color printing has been performed and the number of sheets on which monochrome printing has been performed and the sum of the number of sheets on which the color printing has been performed and the number of sheets on which the monochrome printing has been performed.
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申请公布号 |
US2012195604(A1) |
申请公布日期 |
2012.08.02 |
申请号 |
US201213344856 |
申请日期 |
2012.01.06 |
申请人 |
KAKIGI NOBUYOSHI;CANON KABUSHIKI KAISHA |
发明人 |
KAKIGI NOBUYOSHI |
分类号 |
G03G15/00 |
主分类号 |
G03G15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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