| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology for carrying out power correction at suitable timing by reducing a shift between timing for carrying out the power correction before recording material enters a heat nip and timing of a revising cycle of a power supply ratio in a configuration for suppressing an increase in harmonic wave. <P>SOLUTION: In a heater which basically carrying out power control by wave number control, when the power is supplied according to pin pointed timing of prescribed power supply, it is allowed to carry out a pin pointed detailed control by switching to phase control which has the cycles for updating set in detail only for that timing and suppressing an increase in the harmonic wave current by wave number control and carrying out power supply at desired timing by the phase control. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
