Kazunori Karasawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Cleaning unit and image forming apparatus having multiple cleaning...
- Patent number 7,272,354
- Issue date Sep 18, 2007
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Cleaning unit, process cartridge, and image forming apparatus
- Patent number 7,110,696
- Issue date Sep 19, 2006
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus and method for image forming capable of performing an imp...
- Patent number 7,072,609
- Issue date Jul 4, 2006
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for image forming capable of effectively perfo...
- Patent number 6,501,917
- Issue date Dec 31, 2002
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image developing device and image forming apparatus preventing tone...
- Patent number 6,456,814
- Issue date Sep 24, 2002
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic apparatus having screening member for recycling...
- Patent number 6,339,690
- Issue date Jan 15, 2002
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner content control device for an electrophotographic apparatus
- Patent number 6,141,509
- Issue date Oct 31, 2000
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Paper guide device for image forming apparatus
- Patent number 5,594,539
- Issue date Jan 14, 1997
- Ricoh Company, Ltd.
- Jun'ichi Murano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Bias application control device for image forming apparatus using r...
- Patent number 5,500,720
- Issue date Mar 19, 1996
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image density control method
- Patent number 5,038,175
- Issue date Aug 6, 1991
- Ricoh Company
- Norimasa Sohmiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image density control method for an image forming apparatus
- Patent number 5,006,896
- Issue date Apr 9, 1991
- Ricoh Company, Ltd.
- Yasushi Koichi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner density control device for an image recorder
- Patent number 4,962,394
- Issue date Oct 9, 1990
- Ricoh Company, Ltd.
- Norimasa Sohmiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Current-controlled image transfer
- Patent number 4,772,918
- Issue date Sep 20, 1988
- Ricoh Company, Ltd.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
- Publication number 20060216085
- Publication date Sep 28, 2006
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Apparatus and method for image forming capable of performing an imp...
- Publication number 20050008388
- Publication date Jan 13, 2005
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Cleaning unit, process cartridge, image forming apparatus, and toner
- Publication number 20040136763
- Publication date Jul 15, 2004
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image developing device and image forming apparatus preventing tone...
- Publication number 20010016131
- Publication date Aug 23, 2001
- RICOH COMPANY, LTD.
- Kazunori Karasawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Kazunori Karasawa

Person

Patents Grantslast 30 patents

Cleaning unit and image forming apparatus having multiple cleaning...

Cleaning unit, process cartridge, and image forming apparatus

Apparatus and method for image forming capable of performing an imp...

Method and apparatus for image forming capable of effectively perfo...

Image developing device and image forming apparatus preventing tone...

Electrophotographic apparatus having screening member for recycling...

Toner content control device for an electrophotographic apparatus

Paper guide device for image forming apparatus

Bias application control device for image forming apparatus using r...

Image density control method

Image density control method for an image forming apparatus

Toner density control device for an image recorder

Current-controlled image transfer

Patents Applicationslast 30 patents

Cleaning unit, process cartridge, image forming apparatus, and toner

Apparatus and method for image forming capable of performing an imp...

Cleaning unit, process cartridge, image forming apparatus, and toner

Image developing device and image forming apparatus preventing tone...