Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2020038313
Kind Code:
A
Abstract:
To acquire a more accurate torque value than a prior art without using a torque sensor.MEANS FOR SOLVING THE PROBLEM: An image forming apparatus comprises: a motor 3 that drives to rotate a rotating body for forming an image; a current measuring unit 21 that measures a motor current Im flowing in an energization path including a coil of the motor 3 at a measurement timing that is a timing after the motor is activated; a torque acquisition unit 202 that acquires a torque value DT of the motor 3 on the basis of a measured value DIm of the motor current Im; and a correction unit 203 that, in acquiring the torque value DT with the torque acquisition unit 202, performs correction for cancelling an error based on one or both of a change in characteristics according to a motor speed V of the motor 3 at the measurement timing and a change in characteristics according to the motor current.SELECTED DRAWING: Figure 3
Inventors:
SAKAI KATSUHIDE
KOIDE YASUHIRO
TANAKA TOSHIAKI
HAYASHI AKIHIRO
KOIDE YASUHIRO
TANAKA TOSHIAKI
HAYASHI AKIHIRO
Application Number:
JP2018165745A
Publication Date:
March 12, 2020
Filing Date:
September 05, 2018
Export Citation:
Assignee:
KONICA MINOLTA INC
International Classes:
G03G21/14; G03G15/20; G03G21/00; H02P29/00
Domestic Patent References:
| JP2018031836A | 2018-03-01 | |||
| JPH09197027A | 1997-07-31 | |||
| JP2018058699A | 2018-04-12 | |||
| JP2018084744A | 2018-05-31 | |||
| JP2011147236A | 2011-07-28 | |||
| JP2017123720A | 2017-07-13 |
Attorney, Agent or Firm:
Yukio Kubo
Yasuhiro Sakata
Yasuhiro Sakata