| 摘要 |
PROBLEM TO BE SOLVED: To provide a heating-discharge type printing head which can prevent the occurrence of scumming. SOLUTION: A high-voltage substrate 9a concerning the heating-discharge type printing head 1 which irradiates a negative ion meets with the control requirement shown below. Namely, it is the requirement such that a negative effective minimum application time (b) must not become longer than a negative effective maximum voltage application time a concerning a negative effective maximum voltage v2 applied just before while starting the dispatch of a drive signal so as to start the application from the negative effective maximum voltage v2. COPYRIGHT: (C)2008,JPO&INPIT
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