| 摘要 |
When the head driving voltage V is of the first level V1 and when the detected temperature exceeds the second threshold T2, the driving pulse voltage V is switched to the second level V2. Afterward, the driving pulse voltage V will be maintained at the second level V2 even though the ambient temperature slightly changes. When the temperature becomes lower than the threshold T1, the driving pulse voltage V is switched into the first level V1. The driving pulse voltage V will be maintained at the first level V1 even though the ambient temperature slightly changes.
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