DRIVING METHOD FOR FIXING ROLLER

PURPOSE:To raise the temperature of the entire surface of a pressure roller uniformly in a relatively short time by equalizing the time of low-speed rotation to the sum of the remaining time based upon a set time and the time when the temperature is lower than set temperature. CONSTITUTION:The tempe...

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Bibliographic Details
Main Authors WATASHI MASAHIRO, AISAKA SEIYA, WAKIKAIDOU TAKAHIRO
Format Patent
LanguageEnglish
Published 23.10.1986
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PURPOSE:To raise the temperature of the entire surface of a pressure roller uniformly in a relatively short time by equalizing the time of low-speed rotation to the sum of the remaining time based upon a set time and the time when the temperature is lower than set temperature. CONSTITUTION:The temperature detection signal and copying operation continuation state indication signal of the fixing roller are applied to a microcomputer 61 which has a counter 64 and a control signal from the computer 61 is applied to a main motor 62 for carrying on the copying operation of a copying machine and a fixing motor 63 for driving the fixing roller. When a device is in operation, the fixing roller is rotated fast by the motor 62 and when the device is not in operation and the temperature of the fixing roller is higher than the specific set temperature, the fixing roller is rotated slow by the motor 63; the time of the low-speed rotation is set to the shorter time between the sum of the remaining time based upon the specific set time and the time when the temperature is lower than the set temperature and the set time. Thus, the entire surface of the pressure roller is raised in temperature in a relatively short time to fix images stably.
Bibliography:Application Number: JP19850079893