for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms

Industry

CPC
G03G21/1857

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Parent Industries

GPHYSICS G03Photography G03GELECTROGRAPHY ELECTROPHOTOGRAPHY MAGNETOGRAPHY G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00

Current Industry

G03G21/1857for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Developing cartridge with housing having a driving side and an oppo...
- Patent number 12,181,828
- Issue date Dec 31, 2024
- JIANGXI YIBO E-TECH CO.LTD.
- Xiaobing Liu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 12,174,582
- Issue date Dec 24, 2024
- Canon Kabushiki Kaisha
- Hideki Maeshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cartridge, member constituting cartridge, and image forming apparatus
- Patent number 12,140,903
- Issue date Nov 12, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cartridge, member constituting cartridge, and image forming apparatus
- Patent number 12,140,904
- Issue date Nov 12, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit, cartridge, process cartridge and electrophotographic ima...
- Patent number 12,130,582
- Issue date Oct 29, 2024
- Canon Kabushiki Kaisha
- Daisuke Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 12,130,581
- Issue date Oct 29, 2024
- Canon Kabushiki Kaisha
- Hideki Maeshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit, cartridge and coupling member
- Patent number 12,124,211
- Issue date Oct 22, 2024
- Canon Kabushiki Kaisha
- Tetsuo Uesugi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming apparatus
- Patent number 12,124,209
- Issue date Oct 22, 2024
- Brother Kogyo Kabushiki Kaisha
- Shougo Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process unit
- Patent number 12,117,766
- Issue date Oct 15, 2024
- Brother Kogyo Kabushiki Kaisha
- Masatoshi Shiraki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with movable joint cam, and rotator
- Patent number 12,111,605
- Issue date Oct 8, 2024
- Brother Kogyo Kabushiki Kaisha
- Wataru Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge
- Patent number 12,105,443
- Issue date Oct 1, 2024
- JIANGXI YIBO E-TECH CO.LTD.
- Shiping Ao
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge including developing roller and coupling
- Patent number 12,092,992
- Issue date Sep 17, 2024
- Brother Kogyo Kabushiki Kaisha
- Nao Itabashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Connection structure for coupling with toner cartridge
- Patent number 12,085,885
- Issue date Sep 10, 2024
- Hewlett-Packard Development Company, L.P.
- Jaeil Yu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit, cartridge and coupling member
- Patent number 12,072,668
- Issue date Aug 27, 2024
- Canon Kabushiki Kaisha
- Tetsuo Uesugi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming apparatus
- Patent number 12,066,787
- Issue date Aug 20, 2024
- Brother Kogyo Kabushiki Kaisha
- Hiroshi Nakano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cartridge, process cartridge and electrophotographic image forming...
- Patent number 12,050,432
- Issue date Jul 30, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge and electronic imaging apparatus
- Patent number 12,038,714
- Issue date Jul 16, 2024
- NINESTAR CORPORATION
- Geming Ding
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 11,966,193
- Issue date Apr 23, 2024
- Canon Kabushiki Kaisha
- Goshi Ozaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cartridge, process cartridge and electrophotographic image forming...
- Patent number 11,960,237
- Issue date Apr 16, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Power transmission member with teeth and grooves, transfer device,...
- Patent number 11,960,227
- Issue date Apr 16, 2024
- FUJIFILM Business Innovation Corp.
- Kohei Tachibana
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including locking member configured to lock...
- Patent number 11,953,855
- Issue date Apr 9, 2024
- Brother Kogyo Kabushiki Kaisha
- Shougo Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cartridge, process cartridge and electrophotographic image forming...
- Patent number 11,874,627
- Issue date Jan 16, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit having electrical contact surface positioned at outer sur...
- Patent number 11,853,002
- Issue date Dec 26, 2023
- Brother Kogyo Kabushiki Kaisha
- Isao Kishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 11,835,918
- Issue date Dec 5, 2023
- Canon Kabushiki Kaisha
- Ayumu Iwanaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge providing layout of electrodes and detection gear
- Patent number 11,803,154
- Issue date Oct 31, 2023
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rotation transmission structure and image forming apparatus
- Patent number 11,796,956
- Issue date Oct 24, 2023
- FUJIFILM Business Innovation Corp.
- Yuya Shiokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit, cartridge, process cartridge and electrophotographic ima...
- Patent number 11,774,906
- Issue date Oct 3, 2023
- Canon Kabushiki Kaisha
- Daisuke Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit having electrical contact surface positioned at outer sur...
- Patent number 11,774,902
- Issue date Oct 3, 2023
- Brother Kogyo Kabushiki Kaisha
- Isao Kishi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image forming apparatus
- Patent number 11,774,905
- Issue date Oct 3, 2023
- Canon Kabushiki Kaisha
- Yuichiro Inaba
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Drum unit, cartridge and coupling member
- Patent number 11,762,330
- Issue date Sep 19, 2023
- Canon Kabushiki Kaisha
- Tetsuo Uesugi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING CARTRIDGE
- Publication number 20250013189
- Publication date Jan 9, 2025
- E-Z INK TECHNOLOGY CO., LTD
- Yu ZHU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE
- Publication number 20250013194
- Publication date Jan 9, 2025
- Zhuhai Ninestar Information Technology Co., Ltd
- Baosheng ZHONG
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240427285
- Publication date Dec 26, 2024
- Canon Kabushiki Kaisha
- Ryuji Hamasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND...
- Publication number 20240419122
- Publication date Dec 19, 2024
- Canon Kabushiki Kaisha
- Takahito Ueno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240419121
- Publication date Dec 19, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Wataru YAMAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE INCLUDING DEVELOPING ROLLER AND COUPLING
- Publication number 20240419123
- Publication date Dec 19, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Nao Itabashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE AND ELECTRONIC IMAGING APPARATUS
- Publication number 20240402644
- Publication date Dec 5, 2024
- Zhuhai Ninestar Information Technology Co., Ltd
- Geming DING
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20240369968
- Publication date Nov 7, 2024
- Canon Kabushiki Kaisha
- Hideki Maeshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20240369967
- Publication date Nov 7, 2024
- Canon Kabushiki Kaisha
- Hideki Maeshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
- Publication number 20240361725
- Publication date Oct 31, 2024
- Canon Kabushiki Kaisha
- KANAME WATARIGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
- Publication number 20240361709
- Publication date Oct 31, 2024
- Canon Kabushiki Kaisha
- CHIHARU AKIYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
- Publication number 20240361724
- Publication date Oct 31, 2024
- Canon Kabushiki Kaisha
- CHIHARU AKIYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DRUM UNIT, CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMA...
- Publication number 20240329595
- Publication date Oct 3, 2024
- Canon Kabushiki Kaisha
- Daisuke Abe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING...
- Publication number 20240319663
- Publication date Sep 26, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DRUM UNIT, CARTRIDGE AND COUPLING MEMBER
- Publication number 20240310779
- Publication date Sep 19, 2024
- Canon Kabushiki Kaisha
- Tetsuo Uesugi
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240302789
- Publication date Sep 12, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240302788
- Publication date Sep 12, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLUTCH ACTUATION BETWEEN POSITIONS
- Publication number 20240288818
- Publication date Aug 29, 2024
- Hewlett-Packard Development Company, L.P.
- Jeffrey Harold Luke
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240280937
- Publication date Aug 22, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240255894
- Publication date Aug 1, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Shuji OTA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
- Publication number 20240231271
- Publication date Jul 11, 2024
- Canon Kabushiki Kaisha
- Goshi Ozaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20240210875
- Publication date Jun 27, 2024
- Canon Kabushiki Kaisha
- Hideki Maeshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS INCLUDING LOCKING MEMBER CONFIGURED TO LOCK...
- Publication number 20240192636
- Publication date Jun 13, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Shougo SATO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240142913
- Publication date May 2, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, CARTRIDGE AND DRUM UNIT
- Publication number 20240118657
- Publication date Apr 11, 2024
- Canon Kabushiki Kaisha
- Masanari Morioka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240085824
- Publication date Mar 14, 2024
- Canon Kabushiki Kaisha
- CHIKARA IMAIZUMI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING...
- Publication number 20240069489
- Publication date Feb 29, 2024
- Canon Kabushiki Kaisha
- Masaaki Sato
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DRUM UNIT HAVING ELECTRICAL CONTACT SURFACE POSITIONED AT OUTER SUR...
- Publication number 20240061372
- Publication date Feb 22, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Isao KISHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240053704
- Publication date Feb 15, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Shougo SATO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR
- Publication number 20240045371
- Publication date Feb 8, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Developing cartridge with housing having a driving side and an oppo...

Process cartridge and image forming apparatus

Cartridge, member constituting cartridge, and image forming apparatus

Cartridge, member constituting cartridge, and image forming apparatus

Drum unit, cartridge, process cartridge and electrophotographic ima...

Process cartridge and image forming apparatus

Drum unit, cartridge and coupling member

Image forming apparatus

Process unit

Image forming apparatus with movable joint cam, and rotator

Developing cartridge

Developing cartridge including developing roller and coupling

Connection structure for coupling with toner cartridge

Drum unit, cartridge and coupling member

Image forming apparatus

Cartridge, process cartridge and electrophotographic image forming...

Developing cartridge and electronic imaging apparatus

Image forming apparatus and process cartridge

Cartridge, process cartridge and electrophotographic image forming...

Power transmission member with teeth and grooves, transfer device,...

Image forming apparatus including locking member configured to lock...

Cartridge, process cartridge and electrophotographic image forming...

Drum unit having electrical contact surface positioned at outer sur...

Image forming apparatus

Developing cartridge providing layout of electrodes and detection gear

Rotation transmission structure and image forming apparatus

Drum unit, cartridge, process cartridge and electrophotographic ima...

Drum unit having electrical contact surface positioned at outer sur...

Electrophotographic image forming apparatus

Drum unit, cartridge and coupling member

Patents Applicationslast 30 patents

DEVELOPING CARTRIDGE

PROCESS CARTRIDGE

IMAGE FORMING APPARATUS

PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND...

IMAGE FORMING APPARATUS

DEVELOPING CARTRIDGE INCLUDING DEVELOPING ROLLER AND COUPLING

DEVELOPING CARTRIDGE AND ELECTRONIC IMAGING APPARATUS

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS

DRUM UNIT, CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMA...

CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING...

DRUM UNIT, CARTRIDGE AND COUPLING MEMBER

CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS

CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS

CLUTCH ACTUATION BETWEEN POSITIONS

CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS INCLUDING LOCKING MEMBER CONFIGURED TO LOCK...

CARTRIDGE, MEMBER CONSTITUTING CARTRIDGE, AND IMAGE FORMING APPARATUS

ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, CARTRIDGE AND DRUM UNIT

IMAGE FORMING APPARATUS

CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING...

DRUM UNIT HAVING ELECTRICAL CONTACT SURFACE POSITIONED AT OUTER SUR...

IMAGE FORMING APPARATUS

DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR