Chikara Hiraoka

Person

Ibaraki-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus and air flow path therein
- Patent number 9,201,394
- Issue date Dec 1, 2015
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 9,116,476
- Issue date Aug 25, 2015
- Ricoh Company, Ltd.
- Yoshiharu Takahashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Media guide mechanism, fixing device and image forming apparatus in...
- Patent number 8,874,021
- Issue date Oct 28, 2014
- Ricoh Company, Ltd.
- Kohta Sakaya
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Lever switcher with mechanism for minimizing mechanical shock and s...
- Patent number 8,867,942
- Issue date Oct 21, 2014
- Ricoh Company, Ltd.
- Tamotsu Ikeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet supplying device and image forming apparatus incorporating same
- Patent number 8,798,517
- Issue date Aug 5, 2014
- Ricoh Company, Ltd.
- Yasuo Matsuyama
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Guide device with mechanism capable of minimizing damage to toner i...
- Patent number 8,699,929
- Issue date Apr 15, 2014
- Ricoh Company, Ltd.
- Kohta Sakaya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fusing apparatus and image forming apparatus
- Patent number 8,204,421
- Issue date Jun 19, 2012
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and electro photographic apparatus using the same
- Patent number 8,131,197
- Issue date Mar 6, 2012
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing unit and image forming apparatus having the same
- Patent number 8,073,375
- Issue date Dec 6, 2011
- Ricoh Company, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device and image forming apparatus using the same
- Patent number 7,970,311
- Issue date Jun 28, 2011
- Ricoh Company, Ltd.
- Kenji Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus using the same
- Patent number 7,761,044
- Issue date Jul 20, 2010
- Ricoh Company, Ltd.
- Masahiro Yagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device having cleaner and temperature detector
- Patent number 7,477,867
- Issue date Jan 13, 2009
- Ricoh Printing Systems, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus provided with fixing device
- Patent number 7,406,287
- Issue date Jul 29, 2008
- Ricoh Printing Systems, Ltd.
- Hiroyoshi Matsumoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus with guide having adjusta...
- Patent number 7,298,981
- Issue date Nov 20, 2007
- Ricoh Printing Systems, Ltd.
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus having a fixing device with improved temper...
- Patent number 7,231,158
- Issue date Jun 12, 2007
- Ricoh Printing Systems, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electro-photographic apparatus with a heating roller and pressurizi...
- Patent number 7,167,670
- Issue date Jan 23, 2007
- Ricoh Printing Systems, Ltd.
- Shigeru Obata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 7,142,803
- Issue date Nov 28, 2006
- Ricoh Printing Systems, Ltd.
- Tuyoshi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming and recording apparatus with three pressure members
- Patent number 6,928,257
- Issue date Aug 9, 2005
- Ricoh Printing Systems, Ltd.
- Toshio Ogiso
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic image forming system
- Patent number 6,661,994
- Issue date Dec 9, 2003
- Hitachi, Ltd.
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device improved in offset-prevention
- Patent number 6,400,923
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Hiromitsu Fukuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Recording apparatus with conveyed recording sheet heated by movable...
- Patent number 6,130,408
- Issue date Oct 10, 2000
- Hitachi, Ltd.
- Hiromitsu Fukuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrograph apparatus enabling removal of offensive substances
- Patent number 6,094,549
- Issue date Jul 25, 2000
- Hitachi, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic apparatus and belt fixing device with non-unifo...
- Patent number 5,778,294
- Issue date Jul 7, 1998
- Hitachi, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heat fixing device and electrophotographic apparatus incorporating...
- Patent number 5,499,087
- Issue date Mar 12, 1996
- Hitachi, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
HEALTH DATA MANAGEMENT SYSTEM, HEALTH DATA MEASUREMENT APPARATUS, A...
- Publication number 20230005577
- Publication date Jan 5, 2023
- RICOH COMPANY, LTD.
- Hiroyuki Sugiyama
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
GUIDE DEVICE WITH MECHANISM CAPABLE OF MINIMIZING DAMAGE TO TONER I...
- Publication number 20130004214
- Publication date Jan 3, 2013
- Kohta SAKAYA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
MEDIA GUIDE MECHANISM, FIXING DEVICE AND IMAGE FORMING APPARATUS IN...
- Publication number 20130004222
- Publication date Jan 3, 2013
- RICOH COMPANY, LTD.
- Kohta Sakaya
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
LEVER SWITCHER WITH MECHANISM FOR MINIMIZING MECHANICAL SHOCK AND...
- Publication number 20130004217
- Publication date Jan 3, 2013
- Tamotsu Ikeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20120195652
- Publication date Aug 2, 2012
- Yoshiharu TAKAHASHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Sheet supplying device and image forming apparatus incorporating same
- Publication number 20120063829
- Publication date Mar 15, 2012
- RICOH COMPANY, LTD.
- Yasuo Matsuyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20120002997
- Publication date Jan 5, 2012
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FUSING APPARATUS AND IMAGE FORMING APPARATUS
- Publication number 20100260524
- Publication date Oct 14, 2010
- Chikara HIRAOKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing Unit and Image Forming Apparatus Having the Same
- Publication number 20090110448
- Publication date Apr 30, 2009
- Ricoh Printing Systems, Ltd.
- Chikara HIRAOKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and electro photographic apparatus using the same
- Publication number 20080292374
- Publication date Nov 27, 2008
- Ricoh Printing Systems, Ltd.
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Developing device and image forming apparatus using the same
- Publication number 20080145094
- Publication date Jun 19, 2008
- Ricoh Printing Systems, Ltd.
- Kenji Nakamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH FIXING DEVICE
- Publication number 20070196145
- Publication date Aug 23, 2007
- Hiroyoshi MATSUMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and image forming apparatus using the same
- Publication number 20070048045
- Publication date Mar 1, 2007
- Ricoh Printing Systems, Ltd.
- Masahiro Yagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming device
- Publication number 20060034646
- Publication date Feb 16, 2006
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and image forming apparatus
- Publication number 20060008283
- Publication date Jan 12, 2006
- Shunichi Oohara
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electro-photographic apparatus
- Publication number 20050254866
- Publication date Nov 17, 2005
- Ricoh Printing Systems, Ltd.
- Shigeru Obata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device and image forming apparatus
- Publication number 20050147436
- Publication date Jul 7, 2005
- Ricoh Printing Systems, Ltd.
- Tuyoshi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Fixing device of image forming apparatus
- Publication number 20050141914
- Publication date Jun 30, 2005
- Chikara Hiraoka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image forming and recording apparatus
- Publication number 20040057759
- Publication date Mar 25, 2004
- Toshio Ogiso
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic image forming system
- Publication number 20020176726
- Publication date Nov 28, 2002
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Electrophotographic image forming system
- Publication number 20020025201
- Publication date Feb 28, 2002
- Yoshio Ohuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Chikara Hiraoka

Person

Patents Grantslast 30 patents

Image forming apparatus and air flow path therein

Fixing device and image forming apparatus

Media guide mechanism, fixing device and image forming apparatus in...

Lever switcher with mechanism for minimizing mechanical shock and s...

Sheet supplying device and image forming apparatus incorporating same

Guide device with mechanism capable of minimizing damage to toner i...

Fusing apparatus and image forming apparatus

Fixing device and electro photographic apparatus using the same

Fixing unit and image forming apparatus having the same

Developing device and image forming apparatus using the same

Fixing device and image forming apparatus using the same

Fixing device having cleaner and temperature detector

Fixing device and image forming apparatus provided with fixing device

Fixing device and image forming apparatus with guide having adjusta...

Image forming apparatus having a fixing device with improved temper...

Electro-photographic apparatus with a heating roller and pressurizi...

Fixing device and image forming apparatus

Image forming and recording apparatus with three pressure members

Electrophotographic image forming system

Fixing device improved in offset-prevention

Recording apparatus with conveyed recording sheet heated by movable...

Electrograph apparatus enabling removal of offensive substances

Electrophotographic apparatus and belt fixing device with non-unifo...

Heat fixing device and electrophotographic apparatus incorporating...

Patents Applicationslast 30 patents

HEALTH DATA MANAGEMENT SYSTEM, HEALTH DATA MEASUREMENT APPARATUS, A...

GUIDE DEVICE WITH MECHANISM CAPABLE OF MINIMIZING DAMAGE TO TONER I...

MEDIA GUIDE MECHANISM, FIXING DEVICE AND IMAGE FORMING APPARATUS IN...

LEVER SWITCHER WITH MECHANISM FOR MINIMIZING MECHANICAL SHOCK AND...

FIXING DEVICE AND IMAGE FORMING APPARATUS

Sheet supplying device and image forming apparatus incorporating same

IMAGE FORMING APPARATUS

FUSING APPARATUS AND IMAGE FORMING APPARATUS

Fixing Unit and Image Forming Apparatus Having the Same

Fixing device and electro photographic apparatus using the same

Developing device and image forming apparatus using the same

FIXING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH FIXING DEVICE

Fixing device and image forming apparatus using the same

Image forming device

Fixing device and image forming apparatus

Electro-photographic apparatus

Fixing device and image forming apparatus

Fixing device of image forming apparatus

Image forming and recording apparatus

Electrophotographic image forming system

Electrophotographic image forming system