Print apparatus and method of controlling the same, and storage medium and cartridge
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United States of America Patent
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Nov 11, 2014
Issued Date -
N/A
app pub date -
Jan 6, 2012
filing date -
Jan 28, 2011
priority date (Note) -
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Abstract
In a print apparatus having a photosensitive drum used for color printing, 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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