Kenzo Tatsumi

Person

Kanagawa-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Seal member, developing device, process cartridge, and image formin...
- Patent number 8,442,414
- Issue date May 14, 2013
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge and image forming apparatus
- Patent number 8,275,285
- Issue date Sep 25, 2012
- Ricoh Company, Ltd.
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge with refillable fresh and residual toner chambers,...
- Patent number 8,260,186
- Issue date Sep 4, 2012
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner-collecting device and image forming apparatus
- Patent number 8,208,832
- Issue date Jun 26, 2012
- Ricoh Company, Limited
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Latent image carrier having pairs of first and second positioning p...
- Patent number 8,160,476
- Issue date Apr 17, 2012
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Powder transport screw, and development device, process unit and im...
- Patent number 8,135,313
- Issue date Mar 13, 2012
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyer device, process cartridge, and image forming apparatus
- Patent number 8,135,329
- Issue date Mar 13, 2012
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner agitating unit, toner hopper, process cartridge, and image fo...
- Patent number 8,103,195
- Issue date Jan 24, 2012
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process unit, and image forming apparatus, with...
- Patent number 8,095,035
- Issue date Jan 10, 2012
- Ricoh Company, Ltd.
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Seal member, developing device, process cartridge, and image formin...
- Patent number 8,081,897
- Issue date Dec 20, 2011
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner cartridge, image forming apparatus, method of recycling toner...
- Patent number 8,068,770
- Issue date Nov 29, 2011
- Ricoh Company, Ltd.
- Takeroh Kurenuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveying device, process cartridge, and image forming apparatus
- Patent number 8,019,254
- Issue date Sep 13, 2011
- Ricoh Company, Limited
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device of image forming apparatus
- Patent number 7,979,013
- Issue date Jul 12, 2011
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus that uses this develo...
- Patent number 7,965,957
- Issue date Jun 21, 2011
- Ricoh Company, Ltd.
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device, process cartridge and image forming apparatus
- Patent number 7,965,958
- Issue date Jun 21, 2011
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner container, image forming apparatus, method of recycling toner...
- Patent number 7,962,069
- Issue date Jun 14, 2011
- Ricoh Company, Ltd.
- Takeroh Kurenuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Waste-toner collecting device, process cartridge, and image forming...
- Patent number 7,945,203
- Issue date May 17, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus for effectively positioning an i...
- Patent number 7,940,419
- Issue date May 10, 2011
- Ricoh Company, Limited
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Waste-toner housing device, and image forming apparatus
- Patent number 7,917,077
- Issue date Mar 29, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Powder conveyance device, toner conveyance device, process cartridg...
- Patent number 7,890,044
- Issue date Feb 15, 2011
- Ricoh Company, Ltd.
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning device and image forming apparatus
- Patent number 7,873,302
- Issue date Jan 18, 2011
- Ricoh Company, Limited
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging-roller bearing member, process cartridge, and image formin...
- Patent number 7,706,724
- Issue date Apr 27, 2010
- Ricoh Company, Ltd.
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner collecting device, image forming unit and image forming appar...
- Patent number 7,634,213
- Issue date Dec 15, 2009
- Ricoh Company, Ltd.
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conveyor device, process cartridge, image forming apparatus, and me...
- Patent number 7,623,821
- Issue date Nov 24, 2009
- Ricoh Company, Limited
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge for image forming apparatus
- Patent number D603450
- Issue date Nov 3, 2009
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- D18 - Printing and office machinery
Information Patent Grant
Toner container, toner supply device and image forming apparatus
- Patent number 7,577,379
- Issue date Aug 18, 2009
- Ricoh Company, Ltd.
- Emi Kita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process cartridge for image forming apparatus
- Patent number D597129
- Issue date Jul 28, 2009
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- D18 - Printing and office machinery
Information Patent Grant
Process cartridge for image forming apparatus
- Patent number D590011
- Issue date Apr 7, 2009
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- D18 - Printing and office machinery
Information Patent Grant
Process cartridge for image forming apparatus
- Patent number D590012
- Issue date Apr 7, 2009
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- D18 - Printing and office machinery
Information Patent Grant
Process cartridge for image forming apparatus
- Patent number D580968
- Issue date Nov 18, 2008
- Ricoh Company, Ltd.
- Kenzo Tatsumi
- D18 - Printing and office machinery

Patents Applicationslast 30 patents

Information Patent Application
SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...
- Publication number 20120063806
- Publication date Mar 15, 2012
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE, IMAGE FORMING APPARATUS, METHOD OF RECYCLING TONER...
- Publication number 20100296847
- Publication date Nov 25, 2010
- Takeroh Kurenuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS UNIT, AND IMAGE FORMING APPARATUS
- Publication number 20090169246
- Publication date Jul 2, 2009
- Hirobumi Ooyoshi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
POWDER TRANSPORT SCREW, AND DEVELOPMENT DEVICE, PROCESS UNIT AND IM...
- Publication number 20090169265
- Publication date Jul 2, 2009
- Tomofumi YOSHIDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER AGITATING UNIT, TONER HOPPER, PROCESS CARTRIDGE, AND IMAGE FO...
- Publication number 20090162101
- Publication date Jun 25, 2009
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
WASTE-TONER COLLECTING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING...
- Publication number 20090154973
- Publication date Jun 18, 2009
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...
- Publication number 20090110430
- Publication date Apr 30, 2009
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CARTRIDGE, PROCESS CARTRIDGE, AND METHOD OF MAKING TONER CART...
- Publication number 20090022531
- Publication date Jan 22, 2009
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20080279586
- Publication date Nov 13, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER-COLLECTING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080267661
- Publication date Oct 30, 2008
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
LATENT IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS
- Publication number 20080219698
- Publication date Sep 11, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS
- Publication number 20080205930
- Publication date Aug 28, 2008
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS THAT USES THIS DEVELO...
- Publication number 20080187358
- Publication date Aug 7, 2008
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONVEYING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080181692
- Publication date Jul 31, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
POWDER CONVEYANCE DEVICE, TONER CONVEYANCE DEVICE, PROCESS CARTRIDG...
- Publication number 20080170898
- Publication date Jul 17, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20080152408
- Publication date Jun 26, 2008
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USED THEREIN
- Publication number 20080145119
- Publication date Jun 19, 2008
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
DEVELOPING DEVICE OF IMAGE FORMING APPARATUS
- Publication number 20080145108
- Publication date Jun 19, 2008
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONVEYER DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20080095559
- Publication date Apr 24, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Waste-toner housing device, and image forming apparatus
- Publication number 20080089727
- Publication date Apr 17, 2008
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING-ROLLER BEARING MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMIN...
- Publication number 20080019720
- Publication date Jan 24, 2008
- Yoshihiro Kawakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONVEYOR DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND ME...
- Publication number 20070248390
- Publication date Oct 25, 2007
- Tomohiro Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner Cartridge, Image Forming Apparatus, Method of Recycling Toner...
- Publication number 20070212119
- Publication date Sep 13, 2007
- RICOH COMPANY, LTD.
- Takeroh Kurenuma
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER CONTAINER, TONER SUPPLY DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20070140747
- Publication date Jun 21, 2007
- Emi Kita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER RECOVERY DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
- Publication number 20070140763
- Publication date Jun 21, 2007
- Yoshiyuki Shimizu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
TONER COLLECTING DEVICE, IMAGE FORMING UNIT AND IMAGE FORMING APPAR...
- Publication number 20070104523
- Publication date May 10, 2007
- Tomofumi Yoshida
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming method and apparatus for effectively positioning an i...
- Publication number 20060268373
- Publication date Nov 30, 2006
- Ricoh Co., LTD.
- Kenzo Tatsumi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner for electrophotography, developer using the same, image-formi...
- Publication number 20060251984
- Publication date Nov 9, 2006
- Hiroshi Yamashita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner container, toner supply device and image forming apparatus
- Publication number 20060099012
- Publication date May 11, 2006
- Emi Kita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Toner for electrophotography, developer using the same, image-formi...
- Publication number 20050196692
- Publication date Sep 8, 2005
- Hiroshi Yamashita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Kenzo Tatsumi

Person

Patents Grantslast 30 patents

Seal member, developing device, process cartridge, and image formin...

Process cartridge and image forming apparatus

Toner cartridge with refillable fresh and residual toner chambers,...

Toner-collecting device and image forming apparatus

Latent image carrier having pairs of first and second positioning p...

Powder transport screw, and development device, process unit and im...

Toner conveyer device, process cartridge, and image forming apparatus

Toner agitating unit, toner hopper, process cartridge, and image fo...

Developing device, process unit, and image forming apparatus, with...

Seal member, developing device, process cartridge, and image formin...

Toner cartridge, image forming apparatus, method of recycling toner...

Toner conveying device, process cartridge, and image forming apparatus

Developing device of image forming apparatus

Developing device and image forming apparatus that uses this develo...

Developing device, process cartridge and image forming apparatus

Toner container, image forming apparatus, method of recycling toner...

Waste-toner collecting device, process cartridge, and image forming...

Image forming method and apparatus for effectively positioning an i...

Waste-toner housing device, and image forming apparatus

Powder conveyance device, toner conveyance device, process cartridg...

Cleaning device and image forming apparatus

Charging-roller bearing member, process cartridge, and image formin...

Toner collecting device, image forming unit and image forming appar...

Conveyor device, process cartridge, image forming apparatus, and me...

Process cartridge for image forming apparatus

Toner container, toner supply device and image forming apparatus

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Process cartridge for image forming apparatus

Patents Applicationslast 30 patents

SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...

TONER CARTRIDGE, IMAGE FORMING APPARATUS, METHOD OF RECYCLING TONER...

DEVELOPING DEVICE, PROCESS UNIT, AND IMAGE FORMING APPARATUS

POWDER TRANSPORT SCREW, AND DEVELOPMENT DEVICE, PROCESS UNIT AND IM...

TONER AGITATING UNIT, TONER HOPPER, PROCESS CARTRIDGE, AND IMAGE FO...

WASTE-TONER COLLECTING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING...

SEAL MEMBER, DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMIN...

TONER CARTRIDGE, PROCESS CARTRIDGE, AND METHOD OF MAKING TONER CART...

DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

TONER-COLLECTING DEVICE AND IMAGE FORMING APPARATUS

LATENT IMAGE CARRIER UNIT AND IMAGE FORMING APPARATUS

PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS THAT USES THIS DEVELO...

TONER CONVEYING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

POWDER CONVEYANCE DEVICE, TONER CONVEYANCE DEVICE, PROCESS CARTRIDG...

CLEANING DEVICE AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE USED THEREIN

DEVELOPING DEVICE OF IMAGE FORMING APPARATUS

TONER CONVEYER DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

Waste-toner housing device, and image forming apparatus

CHARGING-ROLLER BEARING MEMBER, PROCESS CARTRIDGE, AND IMAGE FORMIN...

CONVEYOR DEVICE, PROCESS CARTRIDGE, IMAGE FORMING APPARATUS, AND ME...

Toner Cartridge, Image Forming Apparatus, Method of Recycling Toner...

TONER CONTAINER, TONER SUPPLY DEVICE AND IMAGE FORMING APPARATUS

TONER RECOVERY DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

TONER COLLECTING DEVICE, IMAGE FORMING UNIT AND IMAGE FORMING APPAR...

Image forming method and apparatus for effectively positioning an i...

Toner for electrophotography, developer using the same, image-formi...

Toner container, toner supply device and image forming apparatus

Toner for electrophotography, developer using the same, image-formi...