| 摘要 |
PURPOSE:To render processing safer and easier, by cutting off conduction for charging a support during the pause time after the end of image formation as well as retaining conduction for a controlling unit. CONSTITUTION:The circuit comprises AC power source AC, door switch DSW for turning off source AC on opening a side plate, power switch MSW of a copier operation unit, motor DRM for rotating a drum, starter ST for lighting a lamp, fan motor FM1 for cooling the optical system of the copier, blower motor FM2 for drawing outside air to a fixing heater, rectifier REC for rectifying an AC voltage dropped with transformer TR1 to a voltage of +V, central processing unit CPU for controlling the copier, converter HVT including a DC-AC converter and a transformer for raising its output, etc. In a standby mode AC loads excluding a compensation unit are almost turned off, so noises due to the fan, etc. and power consumption for preheating heaters, etc. are eliminated. |
