Title:
IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2020064125
Kind Code:
A
Abstract:
To provide an image forming apparatus that controls a transfer voltage based on a result of detection of a current when a recording material passes through a transfer unit, and can change a change width in changing the transfer voltage according to a variation in electric resistance of a transfer member.SOLUTION: An image forming apparatus 100 comprises: an image carrier 7; a transfer member 8; a power supply 20 that applies a voltage to the transfer member 8; a detection unit 21 that detects a current flowing in the transfer member 8; and a control unit 50 that performs constant voltage control of the voltage applied to the transfer member 8, wherein the control unit 50 can change a transfer voltage applied to the transfer member 8 such that the current flowing in the transfer member 8 during transfer falls within a predetermined range. When the control unit 50 changes the transfer voltage applied to the transfer member 8 such that the current flowing in the transfer member 8 during transfer falls within the predetermined range, the control unit changes the transfer voltage for every predetermined change width of the transfer voltage, and changes the change width based on a result of detection of the current detected by the detection unit 21 when the voltage is applied to the transfer member 8 when a recording material P is not in a transfer unit N2.SELECTED DRAWING: Figure 4
Inventors:
KAKEHI YUTAKA
MINATO YUSUKE
MINATO YUSUKE
Application Number:
JP2018194692A
Publication Date:
April 23, 2020
Filing Date:
October 15, 2018
Export Citation:
Assignee:
CANON KK
International Classes:
G03G15/16; G03G15/00
Domestic Patent References:
| JP2017116591A | 2017-06-29 | |||
| JP2001282012A | 2001-10-12 |
Attorney, Agent or Firm:
Kentaro Kurahashi
Akira Kurahashi
Akira Kurahashi