Inventor
TAKEICHI RYUTA
JP27 patents
⚠️ This page may combine multiple inventors who share the name “TAKEICHI RYUTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
23 patentsUS7480476B2Jan 20, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK115 citations99
US7321744B2Jan 22, 2008
Developer container, developer supplying device, and image forming apparatus
RICOH KK111 citations99
US7697870B2Apr 13, 2010
Developer container, developer supplying device, and image forming apparatus
RICOH KK54 citations98
US7519317B2Apr 14, 2009
Developer container, developer supplying device, and image forming apparatus
RICOH KK72 citations98
US6697595B2Feb 24, 2004
Method and apparatus for forming an image with no degradation
RICOH KK77 citations98
US6562529B1May 13, 2003
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK85 citations98
US6363237B1Mar 26, 2002
Unit for imparting lubricity to electrophotographic photoconductor, electrophotographic image formation apparatus including the unit, and image formation method using the apparatus
RICOH KK81 citations98
US6060205AMay 9, 2000
Image forming apparatus
RICOH KK120 citations98
US7076192B2Jul 11, 2006
Powder conveying device and image forming apparatus using the same
RICOH KK55 citations96
US6521386B1Feb 18, 2003
Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor
RICOH KK60 citations96
US6160977ADec 12, 2000
Image forming apparatus and device for applying a lubricant to an image
RICOH KK72 citations96
US6118964ASep 12, 2000
Multi-functional contact-type charging unit and image transfer unit
RICOH KK56 citations96
US6014532AJan 11, 2000
Image forming apparatus
RICOH KK59 citations96
US6558862B2May 6, 2003
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK70 citations95
US7398038B2Jul 8, 2008
Image forming apparatus using a toner container and a process cartridge
RICOH KK47 citations93
US7212767B2May 1, 2007
Image forming apparatus and process cartridge removably mounted thereto
RICOH KK27 citations93
US7221887B2May 22, 2007
Image forming apparatus that recovers waste toner inside thereof
RICOH KK25 citations92
US7136610B2Nov 14, 2006
Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself
RICOH KK38 citations92
US7024133B2Apr 4, 2006
Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself
RICOH KK50 citations92
US6706459B2Mar 16, 2004
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK22 citations92
US7277667B2Oct 2, 2007
Endless belt device and image forming apparatus using the device
RICOH KK15 citations84
US7421239B2Sep 2, 2008
Cleaning apparatus for removing toner adhered onto endless belt
RICOH KK8 citations74
US7153621B2Dec 26, 2006
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK2 citations62