Inventor
HASEGAWA KUMI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “HASEGAWA KUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
16 patentsUS6468706B2Oct 22, 2002
Two-component developer, container filled with the two-component developer, and image formation apparatus
RICOH KK130 citations99
US6924073B2Aug 2, 2005
Toner for developing electrostatic latent image, toner cartridge, developer, developer cartridge, image forming method, and image forming apparatus
RICOH KK52 citations96
US6544704B1Apr 8, 2003
Two-component developer, container filled with the two-component developer, and image formation apparatus
RICOH KK59 citations96
US6303257B1Oct 16, 2001
Electrophotographic toner and image forming method using the toner
RICOH KK66 citations96
US6221549B1Apr 24, 2001
Toner for developing latent electrostatic images, binder resin for use in the toner, and image formation method using the toner
RICOH KK64 citations96
US6432590B1Aug 13, 2002
Electrophotographic toner and image forming method using the toner
RICOH KK72 citations94
US7217485B2May 15, 2007
Toner for electrophotography, and image fixing process, image forming process, image forming apparatus and process cartridge using the same
RICOH KK34 citations92
US7163774B2Jan 16, 2007
Toner for forming image, method for developing electrostatic latent image, method for fixing toner image, image forming method and process cartridge using the toner
RICOH KK41 citations92
US7029816B2Apr 18, 2006
Electrographic image formation method
RICOH KK20 citations92
US6899986B2May 31, 2005
Image forming method and toner for use in the method
RICOH KK28 citations92
US6255028B1Jul 3, 2001
Electrophotographic toner and image forming method using the toner
RICOH KK44 citations92
US5747210AMay 5, 1998
Electrostatic image developing toner and method for producing the toner
RICOH KK57 citations92
US7522857B2Apr 21, 2009
Toner, image forming apparatus using the same and process cartridge
RICOH KK14 citations84
US7183029B2Feb 27, 2007
Dry toner, toner kit, and image forming apparatus and process cartridge using the dry toner
RICOH KK17 citations84
US7150954B2Dec 19, 2006
Image forming method and toner for use in the method
RICOH KK10 citations74
US6964835B2Nov 15, 2005
Toner and image forming method using the toner
RICOH KK8 citations74
RICOH CO LTD
2 patentsHASEGAWA KUMI
2 patentsUS8202676B2Jun 19, 2012
Toner for developing electrostatic latent image, and image forming method using the toner
HASEGAWA KUMI0 citations46
US8084179B2Dec 27, 2011
Electrostatic image developing toner having specific variation coefficient of number distribution, two-component developer, image forming method and process cartridge
HASEGAWA KUMI0 citations46