Hisao Murayama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus, drum unit, image forming module, and metho...
- Patent number 7,548,712
- Issue date Jun 16, 2009
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming apparatus, drum unit, image forming module, and metho...
- Patent number 7,321,742
- Issue date Jan 22, 2008
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming apparatus and an impurity collecting device associate...
- Patent number 7,295,795
- Issue date Nov 13, 2007
- Ricoh Company, Ltd.
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method, system and apparatus for transferring toner images to both...
- Patent number 7,197,269
- Issue date Mar 27, 2007
- Ricoh Company, Ltd.
- Yasukuni Omata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus, drum unit, image forming module, and metho...
- Patent number 7,010,246
- Issue date Mar 7, 2006
- Ricoh Company, Ltd.
- Takatsugu Fujishiro
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Image forming method having transfer temperature difference and app...
- Patent number 7,003,251
- Issue date Feb 21, 2006
- Ricoh Company, Ltd.
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus configured for double sided printing
- Patent number 6,983,117
- Issue date Jan 3, 2006
- Ricoh Company, Ltd.
- Norimasa Sohmiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Apparatus for image forming on both sides of a recording medium and...
- Patent number 6,898,398
- Issue date May 24, 2005
- Ricoh Company, Limited
- Yasukuni Omata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multicolor image forming method preventing contamination of toner o...
- Patent number 5,869,213
- Issue date Feb 9, 1999
- Ricoh Company, Ltd.
- Naoki Iwata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with toner recycling device
- Patent number 5,737,680
- Issue date Apr 7, 1998
- Ricoh Company, Ltd.
- Hiromitsu Takagaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image density control method for an image recorder
- Patent number 5,682,572
- Issue date Oct 28, 1997
- Ricoh Company, Ltd.
- Kazuo Murai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with toner recycling device
- Patent number 5,604,575
- Issue date Feb 18, 1997
- Ricoh Company, Ltd.
- Hiromitsu Takagaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multicolor image forming method preventing mixing of colors
- Patent number 5,541,029
- Issue date Jul 30, 1996
- Ricoh Company, Ltd.
- Naoki Iwata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus with toner recycling device
- Patent number 5,493,382
- Issue date Feb 20, 1996
- Ricoh Company, Ltd.
- Hiromitsu Takagaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image density control method for an image recorder
- Patent number 5,475,476
- Issue date Dec 12, 1995
- Ricoh Company, Ltd.
- Kazuo Murai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multicolor image forming method and apparatus therefor
- Patent number 5,438,401
- Issue date Aug 1, 1995
- Ricoh Company, Ltd.
- Hisao Murayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device for a multicolor image forming apparatus having a...
- Patent number 5,258,813
- Issue date Nov 2, 1993
- Ricoh Company, Ltd.
- Tomotoshi Nakahara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming control method using variable state factors and fuzzy...
- Patent number 5,231,452
- Issue date Jul 27, 1993
- Ricoh Company, Ltd.
- Hisao Murayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus
- Patent number 5,008,711
- Issue date Apr 16, 1991
- Ricoh Company, Ltd.
- Koji Sakamoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic positive charging toner containing a copper pht...
- Patent number 4,931,374
- Issue date Jun 5, 1990
- Ricoh Company, Ltd.
- Masami Tomita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic toner containing triazolium compound as charge...
- Patent number 4,554,233
- Issue date Nov 19, 1985
- Ricoh Company, Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARTUS, DRUM UNIT, IMAGE FORMING MODULE, AND METHOD...
- Publication number 20080003017
- Publication date Jan 3, 2008
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus, drum unit, image forming module, and metho...
- Publication number 20060127131
- Publication date Jun 15, 2006
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming method having transfer temperature difference and app...
- Publication number 20060024095
- Publication date Feb 2, 2006
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image transferring device and image forming apparatus including the...
- Publication number 20040131398
- Publication date Jul 8, 2004
- Yasukuni Omata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus
- Publication number 20040101332
- Publication date May 27, 2004
- Norimasa Sohmiya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus, drum unit, image forming module, and metho...
- Publication number 20040042822
- Publication date Mar 4, 2004
- Takatsugu Fujishiro
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming method and apparatus for the same
- Publication number 20030235442
- Publication date Dec 25, 2003
- Koji Suzuki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming apparatus, image forming method, and image carrier
- Publication number 20030235443
- Publication date Dec 25, 2003
- Yasukuni Omata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hisao Murayama

Person

Patents Grantslast 30 patents

Image forming apparatus, drum unit, image forming module, and metho...

Image forming apparatus, drum unit, image forming module, and metho...

Image forming apparatus and an impurity collecting device associate...

Method, system and apparatus for transferring toner images to both...

Image forming apparatus, drum unit, image forming module, and metho...

Image forming method having transfer temperature difference and app...

Image forming apparatus configured for double sided printing

Apparatus for image forming on both sides of a recording medium and...

Multicolor image forming method preventing contamination of toner o...

Image forming apparatus with toner recycling device

Image density control method for an image recorder

Image forming apparatus with toner recycling device

Multicolor image forming method preventing mixing of colors

Image forming apparatus with toner recycling device

Image density control method for an image recorder

Multicolor image forming method and apparatus therefor

Developing device for a multicolor image forming apparatus having a...

Image forming control method using variable state factors and fuzzy...

Image forming apparatus

Electrophotographic positive charging toner containing a copper pht...

Electrophotographic toner containing triazolium compound as charge...

Patents Applicationslast 30 patents

IMAGE FORMING APPARTUS, DRUM UNIT, IMAGE FORMING MODULE, AND METHOD...

Image forming apparatus, drum unit, image forming module, and metho...

Image forming method having transfer temperature difference and app...

Image transferring device and image forming apparatus including the...

Image forming apparatus

Image forming apparatus, drum unit, image forming module, and metho...

Image forming method and apparatus for the same

Image forming apparatus, image forming method, and image carrier