Inventor
TAKAGAKI HIROMITSU
JP33 patents
⚠️ This page may combine multiple inventors who share the name “TAKAGAKI HIROMITSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
23 patentsUS5737680AApr 7, 1998
Image forming apparatus with toner recycling device
RICOH KK59 citations96
US5604575AFeb 18, 1997
Image forming apparatus with toner recycling device
RICOH KK41 citations96
US5493382AFeb 20, 1996
Image forming apparatus with toner recycling device
RICOH KK84 citations96
US5502552AMar 26, 1996
Developing device for an image forming apparatus
RICOH KK74 citations95
US5467175ANov 14, 1995
Developing device for an image forming apparatus
RICOH KK30 citations93
US4821075AApr 11, 1989
Developing device and developer supply device for the same
RICOH KK28 citations93
US4792825ADec 20, 1988
Rotary developing device for image-forming apparatus
RICOH KK43 citations93
US7526242B2Apr 28, 2009
Transferring apparatus and image forming apparatus
RICOH KK33 citations92
US7269384B2Sep 11, 2007
Transfer-fixing unit with a surface layer of predefined hardness for use in an image forming apparatus
RICOH KK39 citations92
US7171145B2Jan 30, 2007
Developing device and process cartridge for an image forming apparatus
RICOH KK44 citations92
US7790343B2Sep 7, 2010
Process, toner, process cartridge and apparatus for developing a toner image
RICOH KK8 citations84
US7711300B2May 4, 2010
Image forming apparatus
RICOH KK11 citations84
US7711301B2May 4, 2010
Image transfer device for image forming apparatus
RICOH KK13 citations84
US7643767B2Jan 5, 2010
Transfer-fixing unit and image forming apparatus for enhanced image quality
RICOH KK13 citations84
US7551882B2Jun 23, 2009
Image forming apparatus equipping improved transfer fixing apparatus
RICOH KK16 citations84
US7209685B2Apr 24, 2007
Developing device, image forming apparatus and process cartridge including replenishment openings
RICOH KK19 citations84
US7116932B2Oct 3, 2006
Developing unit and image forming apparatus
RICOH KK13 citations84
US7181155B2Feb 20, 2007
Developer supplying device, developing roller, developing device, image forming apparatus and process cartridge
RICOH KK9 citations74
US7024141B2Apr 4, 2006
Developing device and process cartridge for an image forming apparatus
RICOH KK10 citations74
US6853822B2Feb 8, 2005
Device for removing image disfiguring substances and image forming apparatus using the same
RICOH KK7 citations74
US7613419B2Nov 3, 2009
Image forming apparatus and image forming method characterized by a particular nip time
RICOH KK4 citations63
US7359661B2Apr 15, 2008
Developing method, developing device, and image forming apparatus including the developing device that minimizes deterioration of developer
RICOH KK2 citations63
US7245861B2Jul 17, 2007
Developing device, image forming apparatus and process cartridge including the developing device, and developing method
RICOH KK4 citations63
RICOH CO LTD
5 patentsUS7869752B2Jan 11, 2011
Cleaning device, fixing device, and image forming apparatus
RICOH CO LTD4 citations63
US7856201B2Dec 21, 2010
Image transfer fixation apparatus and image formation apparatus
RICOH CO LTD3 citations63
US7970325B2Jun 28, 2011
Transfer fixing member, transfer fixing device and image forming apparatus
RICOH CO LTD1 citations52
US7912412B2Mar 22, 2011
Transfer-fixing device, image forming apparatus including the transfer-fixing device, and transfer-fixing method
RICOH CO LTD1 citations52
US7907881B2Mar 15, 2011
Transfer-fixing device, image forming apparatus, and transfer-fixing method
RICOH CO LTD1 citations52