HEATER DRIVING DEVICE, FIXING DEVICE AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To solve the problem that temperature ripple gets large. SOLUTION: A heater driving device is provided with a means for changing the conduction ratio of a switching element 14 by supplying power from an AC power source 1 to a heater 10 through a rectifier circuit 3 and the elem...

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Bibliographische Detailangaben
1. Verfasser:	SUGAI KEIICHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CINEMATOGRAPHY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY GENERATION HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To solve the problem that temperature ripple gets large. SOLUTION: A heater driving device is provided with a means for changing the conduction ratio of a switching element 14 by supplying power from an AC power source 1 to a heater 10 through a rectifier circuit 3 and the element 14 and detecting the temperature of a heating body by the use of a temperature detection means 12, and voltage detection means 8 and 9 detecting the voltage of the power source 1. The conduction ratio of the element 14 is widened in accordance with the voltage of the power source 1 detected by the detection means 8 and 9, the temperature of the heating body detected by the detection means 12 and the image forming circumstances of the image forming apparatus before the temperature of the heating body falls.