Title:
IMAGE FORMING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/184595
Kind Code:
A2
Abstract:
An image forming apparatus at least includes: an image bearing member; a developer container; a developer carrying member; and a controller that controls a power source that applies a voltage to the developer carrying member, wherein the developer carrying member has at least a base and a surface layer, the surface layer has an electron donating portion that mainly donates charge to the developer when the developer and the surface layer makes frictional contact to exchange charge and an electron accepting portion that mainly accepts charge from the developer, and the controller applies an AC voltage to the developer carrying member during a period in which an image forming operation is not performed and the developer carrying member is driven, the AC voltage being different from that applied during an image forming period.
Inventors:
ISOBE YUTA (JP)
TAMAGAKI KUNIAKI (JP)
KOYANAGI TAKASHI (JP)
MATSUKAWA AKIHISA (JP)
KANAI RYOSUKE (JP)
TANAKA HIROKI (JP)
ITO MOTONARI (JP)
SHIDA KAZUHISA (JP)
FUKATSU MAKOTO (JP)
TAMAGAKI KUNIAKI (JP)
KOYANAGI TAKASHI (JP)
MATSUKAWA AKIHISA (JP)
KANAI RYOSUKE (JP)
TANAKA HIROKI (JP)
ITO MOTONARI (JP)
SHIDA KAZUHISA (JP)
FUKATSU MAKOTO (JP)
Application Number:
PCT/JP2020/010425
Publication Date:
September 17, 2020
Filing Date:
March 11, 2020
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G03G15/06; G03G15/00; G03G15/08; G03G21/20
Foreign References:
| JP2013050715A | 2013-03-14 | |||
| JP2014029496A | 2014-02-13 | |||
| JP2019044320A | 2019-03-22 | |||
| JP2019044321A | 2019-03-22 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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