Toshio Nakahara

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus and charging device thereof
- Patent number 5,881,344
- Issue date Mar 9, 1999
- Ricoh Company, Ltd.
- Junji Kurokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charge roller for an image forming apparatus
- Patent number 5,786,091
- Issue date Jul 28, 1998
- Ricoh Company, Ltd.
- Junji Kurokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus which maintains a temperature of a charge r...
- Patent number 5,689,770
- Issue date Nov 18, 1997
- Ricoh Company, Ltd.
- Junji Kurokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Roller charging apparatus and image forming apparatus using the same
- Patent number 5,619,311
- Issue date Apr 8, 1997
- Ricoh Company, Ltd.
- Junji Kurokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and charging device thereof
- Patent number 5,479,243
- Issue date Dec 26, 1995
- Ricoh Company, Ltd.
- Junji Kurokawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of cleaning a transfer drum of an electrophotographic apparatus
- Patent number 5,057,873
- Issue date Oct 15, 1991
- Ricoh Company, Ltd.
- Yuji Sawai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for driving a photoconductive element of an electrophotograp...
- Patent number 4,835,582
- Issue date May 30, 1989
- Ricoh Company, Ltd.
- Nobuo Kasahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Toshio Nakahara

Person

Patents Grantslast 30 patents

Image forming apparatus and charging device thereof

Charge roller for an image forming apparatus

Image forming apparatus which maintains a temperature of a charge r...

Roller charging apparatus and image forming apparatus using the same

Image forming apparatus and charging device thereof

Method of cleaning a transfer drum of an electrophotographic apparatus

Device for driving a photoconductive element of an electrophotograp...