| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately determine a command wherein a processing period of time during vibration generation is shortest. Ž<P>SOLUTION: Vibration correspondence information wherein a vibration amount is associated with the number of retrying times, for each head is stored. An unexecuted command wherein processing completion prediction time calculated from the number of retrying times and arrival time of vibration correspondence information corresponding to the vibration amount of an execution-scheduled head, is minimum, is determined as a next process execution command. An increase/decrease in vibration amount of the head before and after a change is stored as difference information and, when the execution-scheduled head is changed from an execution head immediately before, a vibration amount of the execution-scheduled head is derived from the increase/decrease in vibration amount between the heads obtained from the difference information and the vibration amount of the execution head immediately before, and process completion prediction time is calculated from the number of retrying times and arrival time corresponding to the derived vibration amount. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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