Image forming apparatus that judges lifetime of photosensitive unit
The residual potential and charging potential of the surface of a photosensitive drum , or the charging potential and exposure potential of the surface of the photosensitive drum are detected by an exposure sensor . The lifetime of the photosensitive drum is judged in accordance with the difference...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
07.10.2008
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| Online Access | Get full text |
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| Summary: | The residual potential and charging potential of the surface of a photosensitive drum , or the charging potential and exposure potential of the surface of the photosensitive drum are detected by an exposure sensor . The lifetime of the photosensitive drum is judged in accordance with the difference between the detected charging potential and residual potential, or the difference between the detected charging potential and exposure potential. |
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