Yoshio SAKAGAWA

Person

Ashiya-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device and image forming apparatus including same
- Patent number 9,298,127
- Issue date Mar 29, 2016
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a controller configured to regula...
- Patent number 8,977,150
- Issue date Mar 10, 2015
- Ricoh Company, Ltd.
- Shin Yamamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,907,871
- Issue date Mar 15, 2011
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,903,993
- Issue date Mar 8, 2011
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 7,822,356
- Issue date Oct 26, 2010
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus which uses alternating voltage t...
- Patent number 7,796,912
- Issue date Sep 14, 2010
- Ricoh Company Limited
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a brush member to temporarily cap...
- Patent number 7,792,463
- Issue date Sep 7, 2010
- Ricoh Company, Limited
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleanerless image forming apparatus
- Patent number 7,751,753
- Issue date Jul 6, 2010
- Ricoh Company, Ltd.
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming method and apparatus for effectively charging an imag...
- Patent number 7,738,803
- Issue date Jun 15, 2010
- Ricoh Company Limited
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrifying apparatus, a processing unit, and an image formation a...
- Patent number 7,725,054
- Issue date May 25, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Development device for developing an electrostatic latent image for...
- Patent number 7,697,875
- Issue date Apr 13, 2010
- Ricoh Company Limited
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device for charging a surface of a latent image bearing me...
- Patent number 7,693,459
- Issue date Apr 6, 2010
- Ricoh Company Limited
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process unit and image forming apparatus including the same
- Patent number 7,684,732
- Issue date Mar 23, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning of a charging member in an image forming apparatus
- Patent number 7,664,433
- Issue date Feb 16, 2010
- Ricoh Company, Ltd.
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Particle discharge apparatus and image forming apparatus
- Patent number 7,263,317
- Issue date Aug 28, 2007
- Sharp Kabushiki Kaisha
- Hiroshi Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME
- Publication number 20150055987
- Publication date Feb 26, 2015
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20130142530
- Publication date Jun 6, 2013
- Shin YAMAMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND DEVELOPMENT DEVICE
- Publication number 20080317513
- Publication date Dec 25, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080273898
- Publication date Nov 6, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080232875
- Publication date Sep 25, 2008
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080187360
- Publication date Aug 7, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND APPARATUS
- Publication number 20080187361
- Publication date Aug 7, 2008
- Yoshio Sakagawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080181655
- Publication date Jul 31, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20080181654
- Publication date Jul 31, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTRIFYING APPARATUS, A PROCESSING UNIT, AND AN IMAGE FORMATION A...
- Publication number 20080152384
- Publication date Jun 26, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
PROCESS UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME
- Publication number 20080152385
- Publication date Jun 26, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CLEANERLESS IMAGE FORMING APPARATUS
- Publication number 20080145100
- Publication date Jun 19, 2008
- Yoshio SAKAGAWA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE CHARGING DEVICE
- Publication number 20080069592
- Publication date Mar 20, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING METHOD AND APPARATUS FOR EFFECTIVELY CHARGING AN IMAG...
- Publication number 20080056745
- Publication date Mar 6, 2008
- Tetsumaru Fujita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Particles discharge apparatus and image forming apparatus
- Publication number 20050207795
- Publication date Sep 22, 2005
- Sharp Kabushiki Kaisha
- Hiroshi Kubota
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Yoshio SAKAGAWA

Person

Patents Grantslast 30 patents

Developing device and image forming apparatus including same

Image forming apparatus including a controller configured to regula...

Image forming apparatus

Image forming apparatus

Image forming apparatus

Image forming method and apparatus which uses alternating voltage t...

Image forming apparatus including a brush member to temporarily cap...

Cleanerless image forming apparatus

Image forming method and apparatus for effectively charging an imag...

Electrifying apparatus, a processing unit, and an image formation a...

Development device for developing an electrostatic latent image for...

Charging device for charging a surface of a latent image bearing me...

Process unit and image forming apparatus including the same

Cleaning of a charging member in an image forming apparatus

Particle discharge apparatus and image forming apparatus

Patents Applicationslast 30 patents

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND DEVELOPMENT DEVICE

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING METHOD AND APPARATUS

IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

ELECTRIFYING APPARATUS, A PROCESSING UNIT, AND AN IMAGE FORMATION A...

PROCESS UNIT AND IMAGE FORMING APPARATUS INCLUDING THE SAME

CLEANERLESS IMAGE FORMING APPARATUS

CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE CHARGING DEVICE

IMAGE FORMING METHOD AND APPARATUS FOR EFFECTIVELY CHARGING AN IMAG...

Particles discharge apparatus and image forming apparatus