Keita Shimizu

Person

Nagoya-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing cartridge providing layout of electrodes and detection gear
- Patent number 12,204,275
- Issue date Jan 21, 2025
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge and drum cartridge
- Patent number 12,174,560
- Issue date Dec 24, 2024
- Brother Kogyo Kabushiki Kaisha
- Saya Minoshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge including memory holder cover having pawl engaged w...
- Patent number 12,164,263
- Issue date Dec 10, 2024
- Brother Kogyo Kabushiki Kaisha
- Ryuji Noda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge including electrical contact surface positione...
- Patent number 12,140,882
- Issue date Nov 12, 2024
- Brother Kogyo Kabushiki Kaisha
- Saya Minoshima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge attachable to image forming apparatus
- Patent number 12,092,974
- Issue date Sep 17, 2024
- Brother Kogyo Kabushiki Kaisha
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 12,072,006
- Issue date Aug 27, 2024
- Brother Kogyo Kabushiki Kaisha
- Takashi Shimizu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Image forming apparatus
- Patent number 12,066,784
- Issue date Aug 20, 2024
- Brother Kogyo Kabushiki Kaisha
- Nao Itabashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 11,994,825
- Issue date May 28, 2024
- Brother Kogyo Kabushiki Kaisha
- Masao Ichiyanagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge
- Patent number 11,982,973
- Issue date May 14, 2024
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus capable of making toner cartridge completel...
- Patent number 11,892,798
- Issue date Feb 6, 2024
- Brother Kogyo Kabushiki Kaisha
- Ryuji Noda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus to which solvent cartridge that can accommo...
- Patent number 11,886,129
- Issue date Jan 30, 2024
- Brother Kogyo Kabushiki Kaisha
- Yutaka Kakigahara
- 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
Developing cartridge including coupling and clutch for allowing rot...
- Patent number 11,740,569
- Issue date Aug 29, 2023
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 11,714,379
- Issue date Aug 1, 2023
- Brother Kogyo Kabushiki Kaisha
- Masao Ichiyanagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge attachable to image forming apparatus
- Patent number 11,635,707
- Issue date Apr 25, 2023
- Brother Kogyo Kabushiki Kaisha
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge providing layout of electrodes and detection gear
- Patent number 11,604,433
- Issue date Mar 14, 2023
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer cartridge provided with gear having engagement portions
- Patent number 11,579,543
- Issue date Feb 14, 2023
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Image forming apparatus including drum cartridge having waste toner...
- Patent number 11,474,473
- Issue date Oct 18, 2022
- Brother Kogyo Kabushiki Kaisha
- Masaaki Furukawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 11,448,999
- Issue date Sep 20, 2022
- Brother Kogyo Kabushiki Kaisha
- Masao Ichiyanagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 11,448,289
- Issue date Sep 20, 2022
- Brother Kogyo Kabushiki Kaisha
- Takashi Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge providing layout of electrodes and detection gear
- Patent number 11,415,933
- Issue date Aug 16, 2022
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet tray and image forming device
- Patent number 11,401,121
- Issue date Aug 2, 2022
- Brother Kogyo Kabushiki Kaisha
- Kazutoshi Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge including first gear and second gear rotatable...
- Patent number 11,204,585
- Issue date Dec 21, 2021
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge attachable to image forming apparatus
- Patent number 11,181,852
- Issue date Nov 23, 2021
- Brother Kogyo Kabushiki Kaisha
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 11,150,600
- Issue date Oct 19, 2021
- Brother Kogyo Kabushiki Kaisha
- Masao Ichiyanagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge including coupling and clutch for allowing rot...
- Patent number 11,126,109
- Issue date Sep 21, 2021
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing cartridge including engaging member movable with helical...
- Patent number 11,048,203
- Issue date Jun 29, 2021
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device
- Patent number 11,028,903
- Issue date Jun 8, 2021
- Brother Kogyo Kabushiki Kaisha
- Takashi Shimizu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Developing cartridge including engaging member movable with helical...
- Patent number 11,016,433
- Issue date May 25, 2021
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer cartridge provided with gear having engagement portions
- Patent number 10,983,456
- Issue date Apr 20, 2021
- Brother Kogyo Kabushiki Kaisha
- Keita Shimizu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING CARTRIDGE INCLUDING ELECTRICAL CONTACT SURFACE POSITIONE...
- Publication number 20250036043
- Publication date Jan 30, 2025
- BROTHER KOGYO KABUSHIKI KAISHA
- Saya MINOSHIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS
- Publication number 20240345508
- Publication date Oct 17, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DRUM UNIT INCLUDING DRUM FRAME TO WHICH DEVELOPING CARTRIDGE IS ATT...
- Publication number 20240329588
- Publication date Oct 3, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240272575
- Publication date Aug 15, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Nao Itabashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240272581
- Publication date Aug 15, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Masao ICHIYANAGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE
- Publication number 20240264563
- Publication date Aug 8, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- 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
Information Patent Application
DEVELOPING CARTRIDGE
- Publication number 20240019797
- Publication date Jan 18, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE AND DRUM CARTRIDGE
- Publication number 20240012345
- Publication date Jan 11, 2024
- BROTHER KOGYO KABUSHIKI KAISHA
- Saya MINOSHIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE INCLUDING ELECTRICAL CONTACT SURFACE POSITIONE...
- Publication number 20230359137
- Publication date Nov 9, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Saya MINOSHIMA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20230315004
- Publication date Oct 5, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Masao ICHIYANAGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS
- Publication number 20230297007
- Publication date Sep 21, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE INCLUDING MEMORY HOLDER COVER HAVING PAWL ENGAGED W...
- Publication number 20230205132
- Publication date Jun 29, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Ryuji NODA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS CAPABLE OF MAKING TONER CARTRIDGE COMPLETEL...
- Publication number 20230205131
- Publication date Jun 29, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Ryuji NODA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR
- Publication number 20230205130
- Publication date Jun 29, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20230176514
- Publication date Jun 8, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Nao Itabashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CARTRIDGE PROVIDED WITH GEAR HAVING ENGAGEMENT PORTIONS
- Publication number 20230176499
- Publication date Jun 8, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita Shimizu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
DEVELOPING DEVICE
- Publication number 20230003283
- Publication date Jan 5, 2023
- BROTHER KOGYO KABUSHIKI KAISHA
- Takashi SHIMIZU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20220390891
- Publication date Dec 8, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Masao ICHIYANAGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR
- Publication number 20220357701
- Publication date Nov 10, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS TO WHICH SOLVENT CARTRIDGE THAT CAN ACCOMMO...
- Publication number 20220221811
- Publication date Jul 14, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Yutaka KAKIGAHARA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS
- Publication number 20220075290
- Publication date Mar 10, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Hideshi Nishiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20220026845
- Publication date Jan 27, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Masao ICHIYANAGI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS INCLUDING DRUM CARTRIDGE HAVING WASTE TONER...
- Publication number 20220004139
- Publication date Jan 6, 2022
- BROTHER KOGYO KABUSHIKI KAISHA
- Masaaki FURUKAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING CARTRIDGE INCLUDING COUPLING AND CLUTCH FOR ALLOWING ROT...
- Publication number 20210405551
- Publication date Dec 30, 2021
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE
- Publication number 20210293309
- Publication date Sep 23, 2021
- BROTHER KOGYO KABUSHIKI KAISHA
- Takashi SHIMIZU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
DEVELOPING CARTRIDGE INCLUDING FIRST GEAR AND SECOND GEAR ROTATABLE...
- Publication number 20210088967
- Publication date Mar 25, 2021
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPER CARTRIDGE PROVIDED WITH GEAR HAVING ENGAGEMENT PORTIONS
- Publication number 20210055671
- Publication date Feb 25, 2021
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
SHEET TRAY AND IMAGE FORMING DEVICE
- Publication number 20210016985
- Publication date Jan 21, 2021
- BROTHER KOGYO KABUSHIKI KAISHA
- Kazutoshi NAKAMURA
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR
- Publication number 20200371470
- Publication date Nov 26, 2020
- BROTHER KOGYO KABUSHIKI KAISHA
- Keita SHIMIZU
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Keita Shimizu

Person

Patents Grantslast 30 patents

Developing cartridge providing layout of electrodes and detection gear

Toner cartridge and drum cartridge

Toner cartridge including memory holder cover having pawl engaged w...

Developing cartridge including electrical contact surface positione...

Toner cartridge attachable to image forming apparatus

Developing device

Image forming apparatus

Image forming apparatus

Developing cartridge

Image forming apparatus capable of making toner cartridge completel...

Image forming apparatus to which solvent cartridge that can accommo...

Developing cartridge providing layout of electrodes and detection gear

Developing cartridge including coupling and clutch for allowing rot...

Image forming apparatus

Toner cartridge attachable to image forming apparatus

Developing cartridge providing layout of electrodes and detection gear

Developer cartridge provided with gear having engagement portions

Image forming apparatus including drum cartridge having waste toner...

Image forming apparatus

Developing device

Developing cartridge providing layout of electrodes and detection gear

Sheet tray and image forming device

Developing cartridge including first gear and second gear rotatable...

Toner cartridge attachable to image forming apparatus

Image forming apparatus

Developing cartridge including coupling and clutch for allowing rot...

Developing cartridge including engaging member movable with helical...

Developing device

Developing cartridge including engaging member movable with helical...

Developer cartridge provided with gear having engagement portions

Patents Applicationslast 30 patents

DEVELOPING CARTRIDGE INCLUDING ELECTRICAL CONTACT SURFACE POSITIONE...

TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS

DRUM UNIT INCLUDING DRUM FRAME TO WHICH DEVELOPING CARTRIDGE IS ATT...

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

DEVELOPING CARTRIDGE

DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR

DEVELOPING CARTRIDGE

TONER CARTRIDGE AND DRUM CARTRIDGE

DEVELOPING CARTRIDGE INCLUDING ELECTRICAL CONTACT SURFACE POSITIONE...

IMAGE FORMING APPARATUS

TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS

TONER CARTRIDGE INCLUDING MEMORY HOLDER COVER HAVING PAWL ENGAGED W...

IMAGE FORMING APPARATUS CAPABLE OF MAKING TONER CARTRIDGE COMPLETEL...

DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR

IMAGE FORMING APPARATUS

DEVELOPER CARTRIDGE PROVIDED WITH GEAR HAVING ENGAGEMENT PORTIONS

DEVELOPING DEVICE

IMAGE FORMING APPARATUS

DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR

IMAGE FORMING APPARATUS TO WHICH SOLVENT CARTRIDGE THAT CAN ACCOMMO...

TONER CARTRIDGE ATTACHABLE TO IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS INCLUDING DRUM CARTRIDGE HAVING WASTE TONER...

DEVELOPING CARTRIDGE INCLUDING COUPLING AND CLUTCH FOR ALLOWING ROT...

DEVELOPING DEVICE

DEVELOPING CARTRIDGE INCLUDING FIRST GEAR AND SECOND GEAR ROTATABLE...

DEVELOPER CARTRIDGE PROVIDED WITH GEAR HAVING ENGAGEMENT PORTIONS

SHEET TRAY AND IMAGE FORMING DEVICE

DEVELOPING CARTRIDGE PROVIDING LAYOUT OF ELECTRODES AND DETECTION GEAR