Inventor
TAKAGI HIROMASA
JP116 patents
⚠️ This page may combine multiple inventors who share the name “TAKAGI HIROMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
21 patentsUS7664410B2Feb 16, 2010
Image forming apparatus with control of power to a fixing unit
RICOH KK33 citations96
US7609988B2Oct 27, 2009
Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit time
RICOH KK38 citations96
US7054570B2May 30, 2006
Image-forming apparatus
RICOH KK59 citations96
US7603049B2Oct 13, 2009
Image formation apparatus and associated method of storing power
RICOH KK34 citations93
US7496309B2Feb 24, 2009
Image forming apparatus with auxiliary power source
RICOH KK26 citations93
US7373094B2May 13, 2008
Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor
RICOH KK27 citations93
US7239821B2Jul 3, 2007
Image forming apparatus including a heating unit
RICOH KK38 citations93
US7212758B2May 1, 2007
Image-forming apparatus
RICOH KK27 citations93
US7212759B2May 1, 2007
Heating device, fixing device and image forming apparatus
RICOH KK36 citations93
US7209675B2Apr 24, 2007
Image forming apparatus
RICOH KK36 citations93
US7130555B2Oct 31, 2006
Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor
RICOH KK41 citations93
US7116923B2Oct 3, 2006
Fuser provided with auxiliary power supply device to operate with varying power
RICOH KK47 citations93
US7565087B2Jul 21, 2009
Fixing device, image forming apparatus including the fixing device, and fixing method
RICOH KK32 citations92
US7551869B2Jun 23, 2009
Fixing device, image forming apparatus including the fixing device, and fixing method
RICOH KK31 citations92
US7515845B2Apr 7, 2009
Method for supplying power, and fixing and image forming apparatuses
RICOH KK26 citations92
US7366432B2Apr 29, 2008
Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method
RICOH KK30 citations92
US7356270B2Apr 8, 2008
Fixing device, image forming apparatus including the fixing device, and fixing method
RICOH KK27 citations92
US7352987B2Apr 1, 2008
Fixing device and image forming apparatus for holding a recording medium by electrostatic force
RICOH KK20 citations92
US7343113B2Mar 11, 2008
Fixing device, image forming apparatus including the fixing device, and fixing method
RICOH KK35 citations92
US7333743B2Feb 19, 2008
Fixing device, image forming apparatus including the fixing device, and fixing method
RICOH KK37 citations92
US7308216B2Dec 11, 2007
Image forming apparatus and method to supply power to a fixing device
RICOH KK38 citations92
RICOH CO LTD
6 patentsUS7957663B2Jun 7, 2011
Heater, fixing unit and image forming apparatus
RICOH CO LTD23 citations93
US7885569B2Feb 8, 2011
Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unit
RICOH CO LTD26 citations93
US7953338B2May 31, 2011
Heating apparatus, fixing apparatus, and image forming apparatus which charges an auxiliary power unit to less than a maximum value in a standby status
RICOH CO LTD8 citations84
US10935911B2Mar 2, 2021
Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same
RICOH CO LTD1 citations73
US9026024B2May 5, 2015
Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating same
RICOH CO LTD5 citations73
US9207596B2Dec 8, 2015
Image forming apparatus including a fixing device
RICOH CO LTD2 citations63
ISHII KENJI
5 patentsUS9529309B2Dec 27, 2016
Fixing device and image forming apparatus including a multi-layer nip formation pad
ISHII KENJI3 citations73
US9014611B2Apr 21, 2015
Fixing device and image forming apparatus with same
ISHII KENJI4 citations73
US8929791B2Jan 6, 2015
Fixing device and endless belt assembly
ISHII KENJI6 citations73
US9031485B2May 12, 2015
Fixing device and endless belt assembly
ISHII KENJI2 citations63
US8873984B2Oct 28, 2014
Fixing device, image forming apparatus incorporating same, and fixing method
ISHII KENJI2 citations63
HASE TAKAMASA
2 patentsYAMAGUCHI YOSHIKI
2 patentsKAWATA TEPPEI
2 patentsUS9811031B2Nov 7, 2017
Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same
KAWATA TEPPEI4 citations83
US8886101B2Nov 11, 2014
Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the same
KAWATA TEPPEI7 citations83
ARAI YUJI
1 patentOGAWA TADASHI
1 patentSESHITA TAKUYA
1 patentFUJIMOTO IPPEI
1 patentSAWADA KAZUNARI
1 patentSETO TAKASHI
1 patentTAKAGI HIROMASA
1 patentOGINO YASUHIKO
1 patentYAMANO MOTOYOSHI
1 patentSAITO KAZUYA
1 patentYOSHINAGA HIROSHI
1 patentSUZUKI AKIRA
1 patentShowing the top 50 of 116 patents by PatentIndex Score.