HEAT ROLL DRIVE CONTROL DEVICE FOR ELECTROPHOTOGRAPHIC PRINTER

• Main Author: AIDA MITSUNOBU
• Format: Patent
• Language: English
• Published: 08.07.2010
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide a heat roll drive control device that stably drives a motor with the target number of revolutions regardless of accuracy variation due to the eccentricity of an encoder. SOLUTION: The heat roll drive control device has a means for turning on/off the drive motor 15 according to the phase difference between an encoder pulse signal 17 output from the encoder 23 according to an amount of rotation of a drive motor 15 for a heat roll and a reference pulse signal 18 output as a reference for a feed position of the drive motor 15, and includes: a means for creating phase difference data 28 by measuring the time that is a phase difference from the generation of the reference pulse signal 18 to the generation of the encoder pulse signal 17; a means for storing the phase difference data 28 in a memory 29; a means for reading, from the phase difference data 28 stored in the memory 29, present phase difference data 30 and phase difference data 31 that is 180° opposite the present position in terms of the rotation angle of the motor, and calculating the average phase difference data 33 of them; and a means for generating an average phase difference drive signal 38 for turning on the heat roller drive motor 15 by the time corresponding to the average phase difference data 33. COPYRIGHT: (C)2010,JPO&INPIT