Structure, details of the charging member

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CPC
G03G15/0233

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Parent Industries

GPHYSICS G03Photography G03GELECTROGRAPHY ELECTROPHOTOGRAPHY MAGNETOGRAPHY G03G15/00Apparatus for electrographic processes using a charge pattern

Current Industry

G03G15/0233Structure, details of the charging member

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus
- Patent number 12,265,354
- Issue date Apr 1, 2025
- Canon Kabushiki Kaisha
- Kazuhiro Funatani
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging member, method for producing charging member, charging dev...
- Patent number 12,248,256
- Issue date Mar 11, 2025
- FUJIFILM Business Innovation Corp.
- Fuyuki Kano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device, cartridge, and image forming apparatus
- Patent number 12,228,864
- Issue date Feb 18, 2025
- FUJIFILM Business Innovation Corp.
- Yuki Tagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing roller, process cartridge, and electrophotographic image...
- Patent number 12,164,242
- Issue date Dec 10, 2024
- Canon Kabushiki Kaisha
- Toru Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 12,153,360
- Issue date Nov 26, 2024
- Toshiba Tec Kabushiki Kaisha
- Masayuki Kasukawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic member and electrophotographic image forming ap...
- Patent number 12,135,507
- Issue date Nov 5, 2024
- Canon Kabushiki Kaisha
- Noriaki Egawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging roller and image forming apparatus
- Patent number 12,117,740
- Issue date Oct 15, 2024
- Archem Inc.
- Kaori Okumoto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Electrophotographic photoreceptor, process cartridge, and image for...
- Patent number 12,117,741
- Issue date Oct 15, 2024
- FUJIFILM Business Innovation Corp.
- Hiroko Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with charge eliminating needle protection c...
- Patent number 12,111,584
- Issue date Oct 8, 2024
- Kyocera Document Solutions Inc.
- Yasuhiro Michishita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive roller
- Patent number 12,105,435
- Issue date Oct 1, 2024
- NOK Corporation
- Shogo Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device and image formation apparatus
- Patent number 12,105,437
- Issue date Oct 1, 2024
- Oki Electric Industry Co., Ltd.
- Daiki Morimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive member, charging device, process cartridge, and image fo...
- Patent number 12,105,438
- Issue date Oct 1, 2024
- FUJIFILM Business Innovation Corp.
- Toshiyasu Yukawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 12,105,462
- Issue date Oct 1, 2024
- Canon Kabushiki Kaisha
- Shunsuke Matsushita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging roll for electrophotographic equipment
- Patent number 12,105,436
- Issue date Oct 1, 2024
- Sumitomo Riko Company Limited
- Yoshihiro Saito
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive member, charging device, process cartridge, and image fo...
- Patent number 12,055,868
- Issue date Aug 6, 2024
- FUJIFILM Business Innovation Corp.
- Kenta Yamakoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 12,032,322
- Issue date Jul 9, 2024
- Canon Kabushiki Kaisha
- Toshihiko Takayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 12,032,323
- Issue date Jul 9, 2024
- FUJIFILM Business Innovation Corp.
- Keisuke Kusano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electroconductive member, process cartridge, and electrophotographi...
- Patent number 12,032,331
- Issue date Jul 9, 2024
- Canon Kabushiki Kaisha
- Atsushi Uematsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging roll for electrophotographic apparatus
- Patent number 12,013,650
- Issue date Jun 18, 2024
- Sumitomo Riko Company Limited
- Yoshihiro Saito
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electroconductive member, process cartridge, and electrophotographi...
- Patent number 12,001,166
- Issue date Jun 4, 2024
- Canon Kabushiki Kaisha
- Atsushi Uematsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging member having a surface layer comprising urethane foam
- Patent number 11,982,949
- Issue date May 14, 2024
- Hewlett-Packard Development Company, L.P.
- Taehyun Kim
- B32 - LAYERED PRODUCTS
Information Patent Grant
Charging member having two surface layers
- Patent number 11,977,340
- Issue date May 7, 2024
- Hewlett-Packard Development Company, L.P.
- Youngphil Ji
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic electro-conductive member, process cartridge, a...
- Patent number 11,971,683
- Issue date Apr 30, 2024
- Canon Kabushiki Kaisha
- Satoru Nishioka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging member, charging device, process cartridge, and image form...
- Patent number 11,966,172
- Issue date Apr 23, 2024
- FUJIFILM Business Innovation Corp.
- Takuya Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Home port and substrate processing apparatus using same
- Patent number 11,960,236
- Issue date Apr 16, 2024
- Semes Co., Ltd.
- Young Jun Son
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive roller, image forming apparatus, and inspection method f...
- Patent number 11,947,272
- Issue date Apr 2, 2024
- NOK Corporation
- Shogo Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Roll member, charging member, charging device, process cartridge, a...
- Patent number 11,947,274
- Issue date Apr 2, 2024
- FUJIFILM Business Innovation Corp.
- Yuki Tagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conductive roller, image forming apparatus, and inspection method f...
- Patent number 11,947,273
- Issue date Apr 2, 2024
- NOK Corporation
- Shogo Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging member and electrophotographic imaging apparatuses employi...
- Patent number 11,921,437
- Issue date Mar 5, 2024
- Hewlett-Packard Development Company, L.P.
- Norihiro Harada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and process cartridge
- Patent number 11,892,780
- Issue date Feb 6, 2024
- FUJIFILM Business Innovation Corp.
- Yoshiteru Yamada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
ELECTROPHOTOGRAPHIC CONDUCTIVE MEMBER, PROCESS CARTRIDGE, AND ELECT...
- Publication number 20250102945
- Publication date Mar 27, 2025
- Canon Kabushiki Kaisha
- SATORU NISHIOKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAP...
- Publication number 20250102946
- Publication date Mar 27, 2025
- Canon Kabushiki Kaisha
- ATSUSHI UEMATSU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20250068092
- Publication date Feb 27, 2025
- Canon Kabushiki Kaisha
- SHUNSUKE MIZUKOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC EQUIPMENT
- Publication number 20250060687
- Publication date Feb 20, 2025
- SUMITOMO RIKO COMPANY LIMITED
- Shinkichi Kashihara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS
- Publication number 20250021031
- Publication date Jan 16, 2025
- FUJIFILM Business Innovation Corp.
- Haruno NAGUMO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
- Publication number 20240427260
- Publication date Dec 26, 2024
- Canon Kabushiki Kaisha
- HIROKAZU FUJINO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240419120
- Publication date Dec 19, 2024
- Canon Kabushiki Kaisha
- Shunsuke Matsushita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240385549
- Publication date Nov 21, 2024
- Canon Kabushiki Kaisha
- HIROKI SASAME
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE-FORMING ROLLER, CHARGE ROLLER, METHOD FOR INSPECTING IMAGE-FO...
- Publication number 20240337963
- Publication date Oct 10, 2024
- SYNZTEC CO., LTD.
- Atsushi IKEDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FOR...
- Publication number 20240329558
- Publication date Oct 3, 2024
- FUJIFILM Business Innovation Corp.
- Hiroko Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...
- Publication number 20240319632
- Publication date Sep 26, 2024
- FUJIFILM Business Innovation Corp.
- Toshiyasu YUKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...
- Publication number 20240319622
- Publication date Sep 26, 2024
- FUJIFILM Business Innovation Corp.
- Kenta YAMAKOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240302785
- Publication date Sep 12, 2024
- Canon Kabushiki Kaisha
- TOSHIHIKO TAKAYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240288812
- Publication date Aug 29, 2024
- Canon Kabushiki Kaisha
- TOSHIHIKO TAKAYAMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240288813
- Publication date Aug 29, 2024
- Canon Kabushiki Kaisha
- SHINSUKE KOBAYASHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC DEVICES AND METHOD FOR PRODUC...
- Publication number 20240272563
- Publication date Aug 15, 2024
- SUMITOMO RIKO COMPANY LIMITED
- Manami MURAI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE, CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20240264548
- Publication date Aug 8, 2024
- FUJIFILM Business Innovation Corp.
- Yuki TAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTROSTATIC COLLECTING APPARATUS, IMAGE FORMING APPARATUS, AND CL...
- Publication number 20240241462
- Publication date Jul 18, 2024
- Canon Kabushiki Kaisha
- YUKI NISHIZAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240241464
- Publication date Jul 18, 2024
- Canon Kabushiki Kaisha
- HIROKI TANAKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
- Publication number 20240118653
- Publication date Apr 11, 2024
- FUJIFILM Business Innovation Corp.
- Keisuke Kusano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...
- Publication number 20240103393
- Publication date Mar 28, 2024
- FUJIFILM Business Innovation Corp.
- Kenta YAMAKOSHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL
- Publication number 20240094656
- Publication date Mar 21, 2024
- NOK Corporation
- Shogo SUZUKI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE
- Publication number 20240085818
- Publication date Mar 14, 2024
- FUJIFILM Business Innovation Corp.
- Yoshiteru YAMADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE...
- Publication number 20240085821
- Publication date Mar 14, 2024
- Canon Kabushiki Kaisha
- Toru Ishii
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORM...
- Publication number 20240085817
- Publication date Mar 14, 2024
- FUJIFILM Business Innovation Corp.
- Takuya YAMAMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240077808
- Publication date Mar 7, 2024
- FUJIFILM Business Innovation Corp.
- Yukimi KAWABATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING ROLL FOR ELECTROPHOTOGRAPHIC DEVICE AND METHOD FOR MANUFAC...
- Publication number 20240059875
- Publication date Feb 22, 2024
- SUMITOMO RIKO COMPANY LIMITED
- Yoshihiro SAITO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ROLL MEMBER, CHARGING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, A...
- Publication number 20240061357
- Publication date Feb 22, 2024
- FUJIFILM Business Innovation Corp.
- Yuki TAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE AND IMAGE FORMATION APPARATUS
- Publication number 20240045352
- Publication date Feb 8, 2024
- Oki Electric Industry Co., Ltd.
- Daiki MORIMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20230408948
- Publication date Dec 21, 2023
- KYOCERA DOCUMENT SOLUTIONS INC.
- Yasuhiro MICHISHITA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Structure, details of the charging member

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Image forming apparatus

Charging member, method for producing charging member, charging dev...

Charging device, cartridge, and image forming apparatus

Developing roller, process cartridge, and electrophotographic image...

Image forming apparatus

Electrophotographic member and electrophotographic image forming ap...

Charging roller and image forming apparatus

Electrophotographic photoreceptor, process cartridge, and image for...

Image forming apparatus with charge eliminating needle protection c...

Conductive roller

Charging device and image formation apparatus

Conductive member, charging device, process cartridge, and image fo...

Image forming apparatus

Charging roll for electrophotographic equipment

Conductive member, charging device, process cartridge, and image fo...

Image forming apparatus

Image forming apparatus and process cartridge

Electroconductive member, process cartridge, and electrophotographi...

Charging roll for electrophotographic apparatus

Electroconductive member, process cartridge, and electrophotographi...

Charging member having a surface layer comprising urethane foam

Charging member having two surface layers

Electrophotographic electro-conductive member, process cartridge, a...

Charging member, charging device, process cartridge, and image form...

Home port and substrate processing apparatus using same

Conductive roller, image forming apparatus, and inspection method f...

Roll member, charging member, charging device, process cartridge, a...

Conductive roller, image forming apparatus, and inspection method f...

Charging member and electrophotographic imaging apparatuses employi...

Image forming apparatus and process cartridge

Patents Applicationslast 30 patents

ELECTROPHOTOGRAPHIC CONDUCTIVE MEMBER, PROCESS CARTRIDGE, AND ELECT...

ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAP...

IMAGE FORMING APPARATUS

CHARGING ROLL FOR ELECTROPHOTOGRAPHIC EQUIPMENT

IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

IMAGE FORMING APPARATUS

CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

IMAGE-FORMING ROLLER, CHARGE ROLLER, METHOD FOR INSPECTING IMAGE-FO...

ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FOR...

CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...

CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

CHARGING ROLL FOR ELECTROPHOTOGRAPHIC DEVICES AND METHOD FOR PRODUC...

CHARGING DEVICE, CARTRIDGE, AND IMAGE FORMING APPARATUS

ELECTROSTATIC COLLECTING APPARATUS, IMAGE FORMING APPARATUS, AND CL...

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

CONDUCTIVE MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FO...

CHARGING ROLL

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE

DEVELOPING ROLLER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE...

CHARGING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORM...

IMAGE FORMING APPARATUS

CHARGING ROLL FOR ELECTROPHOTOGRAPHIC DEVICE AND METHOD FOR MANUFAC...

ROLL MEMBER, CHARGING MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, A...

CHARGING DEVICE AND IMAGE FORMATION APPARATUS

IMAGE FORMING APPARATUS