Kazuhiro Yuasa

Person

Zama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Developing device for an image forming apparatus
- Patent number 6,033,818
- Issue date Mar 7, 2000
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic recording apparatus configured to switch a bias...
- Patent number 5,897,243
- Issue date Apr 27, 1999
- Ricoh Company, Ltd.
- Satoru Komatsubara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of coating a toner conveyor roller
- Patent number 5,879,752
- Issue date Mar 9, 1999
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,845,183
- Issue date Dec 1, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an electrophotographic recording apparatus in...
- Patent number 5,826,144
- Issue date Oct 20, 1998
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with bias control to prevent undesirable to...
- Patent number 5,768,665
- Issue date Jun 16, 1998
- Ricoh Company, Ltd.
- Tetsuo Yamanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,708,942
- Issue date Jan 13, 1998
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having the lengths of two toner transporting roll...
- Patent number 5,697,026
- Issue date Dec 9, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus for electronic photographic recording equipmen...
- Patent number 5,689,782
- Issue date Nov 18, 1997
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Device for electrostatically developing a latent image on an image...
- Patent number 5,666,625
- Issue date Sep 9, 1997
- Ricoh Company, Ltd.
- Satoru Komatsubara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image recording apparatus having a toner supply tank and a toner re...
- Patent number RE35528
- Issue date Jun 10, 1997
- Ricoh Company, Ltd.
- Yozo Matsuura
- 399 - Electrophotography
Information Patent Grant
Toner, and devices for electrostatically depositing a uniform appli...
- Patent number 5,625,438
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having seals between a toner transport roller and...
- Patent number 5,625,440
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Iwao Matsumae
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,625,441
- Issue date Apr 29, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Toner conveyor roller and image forming apparatus having the same
- Patent number 5,617,191
- Issue date Apr 1, 1997
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,610,693
- Issue date Mar 11, 1997
- Ricoh Company, Ltd.
- Toshihiro Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,552,870
- Issue date Sep 3, 1996
- Ricoh Company, Ltd.
- Eisaku Murakami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,489,747
- Issue date Feb 6, 1996
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for an image forming apparatus
- Patent number 5,486,909
- Issue date Jan 23, 1996
- Ricoh Company, Ltd.
- Eiji Takenaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for producing a bilevel image suitable for a printing cha...
- Patent number 5,386,301
- Issue date Jan 31, 1995
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image forming apparatus with a first and second lid
- Patent number 5,255,061
- Issue date Oct 19, 1993
- Ricoh Company, Ltd.
- Yozo Matsuura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image recording apparatus having a toner supply tank and a toner re...
- Patent number 5,126,799
- Issue date Jun 30, 1992
- Ricoh Company, Ltd.
- Yozo Matsuura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for cleaning photoconductive belt
- Patent number 5,111,251
- Issue date May 5, 1992
- Ricoh Company, Ltd.
- Mugijirou Uno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optically imaged recording apparatus
- Patent number 4,757,332
- Issue date Jul 12, 1988
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Ion projection recording apparatus
- Patent number 4,641,955
- Issue date Feb 10, 1987
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
One-component copier toner with electric field transfer
- Patent number 4,637,708
- Issue date Jan 20, 1987
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic recording apparatus
- Patent number 4,636,815
- Issue date Jan 13, 1987
- Ricoh Company Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of cleaning the record head of electrostatic image recording...
- Patent number 4,621,274
- Issue date Nov 4, 1986
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Transfer-type electrostatic recording method
- Patent number 4,586,807
- Issue date May 6, 1986
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Record head cleaning device for image recording apparatus
- Patent number 4,567,495
- Issue date Jan 28, 1986
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Kazuhiro Yuasa

Person

Patents Grantslast 30 patents

Developing device for an image forming apparatus

Electrophotographic recording apparatus configured to switch a bias...

Method of coating a toner conveyor roller

Developing device for an image forming apparatus

Developing device for an electrophotographic recording apparatus in...

Image forming apparatus with bias control to prevent undesirable to...

Developing device for an image forming apparatus

Developing device having the lengths of two toner transporting roll...

Developing apparatus for electronic photographic recording equipmen...

Device for electrostatically developing a latent image on an image...

Image recording apparatus having a toner supply tank and a toner re...

Toner, and devices for electrostatically depositing a uniform appli...

Developing device having seals between a toner transport roller and...

Developing device for an image forming apparatus

Toner conveyor roller and image forming apparatus having the same

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Developing device for an image forming apparatus

Apparatus for producing a bilevel image suitable for a printing cha...

Image forming apparatus with a first and second lid

Image recording apparatus having a toner supply tank and a toner re...

Apparatus for cleaning photoconductive belt

Optically imaged recording apparatus

Ion projection recording apparatus

One-component copier toner with electric field transfer

Electrostatic recording apparatus

Method of cleaning the record head of electrostatic image recording...

Transfer-type electrostatic recording method

Record head cleaning device for image recording apparatus