| 摘要 |
PROBLEM TO BE SOLVED: To enable a recording-head temperature control to be performed using a sub heater for both cases of a before-starting of writing and an under-writing in an inkjet recording device. SOLUTION: The pulse width of a sub-heater driving signal 12 is made to be changed following the change of a recording duty 75. In a before-writing PWM drive area 73, the sub heater is actuated by the predetermined sub-heater driving signal 12. On the other hand, an under-writing PWM drive area 74 is partitioned into the area of a predetermined width expressed by a period 72. Then, the sub-heater driving signal 12 of the partitioned area corresponding to a dot counted value for every partitioned area is defined. That is, an under-writing sub-heat change trigger 76 is output for every under-writing sub-heat change period 72, and then the sub-heater driving signal 12 is established according to the trigger. COPYRIGHT: (C)2009,JPO&INPIT
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