Inventor
YASUNAGA HIDEAKI
JP49 patents
⚠️ This page may combine multiple inventors who share the name “YASUNAGA HIDEAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH CO LTD
12 patentsUS7838193B2Nov 23, 2010
Toner and image forming method using the toner
RICOH CO LTD10 citations84
US7833686B2Nov 16, 2010
Toner and method for producing the same, toner kit, and developer, process cartridge, image forming method and image forming apparatus
RICOH CO LTD6 citations74
US8021814B2Sep 20, 2011
Toner, and oilless fixing method and process cartridge using the toner
RICOH CO LTD4 citations63
US7979010B2Jul 12, 2011
Image forming apparatus and image forming method
RICOH CO LTD3 citations63
US7970323B2Jun 28, 2011
Developing device, developer therefor, and image forming method and apparatus, and process cartridge using the developing device
RICOH CO LTD2 citations63
US7873300B2Jan 18, 2011
Single component development device, process cartridge and toner
RICOH CO LTD4 citations63
US7867680B2Jan 11, 2011
Non-magnetic toner for one-component development and method of preparing the toner, and image developer, image forming apparatus, process cartridge and image forming method
RICOH CO LTD2 citations63
US8053154B2Nov 8, 2011
Toner and image forming method
RICOH CO LTD1 citations52
US8043779B2Oct 25, 2011
Pulverized toner
RICOH CO LTD1 citations52
US8041270B2Oct 18, 2011
Image developer using one-component developer
RICOH CO LTD1 citations52
US8007973B2Aug 30, 2011
Full-color toner kit, process cartridge, and image forming method
RICOH CO LTD0 citations52
US7981593B2Jul 19, 2011
Toner, developer including the toner, and image forming method and apparatus using the toner
RICOH CO LTD1 citations52
MINOLTA CO LTD
11 patentsUS5849452ADec 15, 1998
developing method using an oscillated electric field and including a specified toner and carrier
MINOLTA CO LTD19 citations83
US6130019AOct 10, 2000
Binder carrier
MINOLTA CO LTD10 citations73
US5834152ANov 10, 1998
Carrier and developer for electrophotographic latent image development, and image forming method using same
MINOLTA CO LTD9 citations73
US6306552B1Oct 23, 2001
Carrier having specified bet specific surface area and dynamic current value and two-component developer thereof
MINOLTA CO LTD4 citations62
US6165664ADec 26, 2000
Two-component developing agent and image forming method using such a developing agent
MINOLTA CO LTD2 citations62
US6099999AAug 8, 2000
Binder carrier comprising magnetic particles and specific resin
MINOLTA CO LTD2 citations62
US6001526ADec 14, 1999
Binder carrier containing ethylenic unsaturated nitrile copolymer as binder resin
MINOLTA CO LTD2 citations62
US5962175AOct 5, 1999
Binder-type carrier and method of manufacturing same
MINOLTA CO LTD3 citations62
US5736287AApr 7, 1998
Development method
MINOLTA CO LTD4 citations62
US5689781ANov 18, 1997
Carrier for electrostatic latent image developing
MINOLTA CO LTD2 citations62
US6007956ADec 28, 1999
Carrier and developer for developing electrostatic latent images
MINOLTA CO LTD1 citations51
RICOH KK
10 patentsUS7556904B2Jul 7, 2009
Toner for electrostatic development, developer, image forming method, image-forming apparatus and process for cartridge using the same
RICOH KK23 citations93
US7720428B2May 18, 2010
Toner recovery apparatus, process cartridge, and image forming apparatus
RICOH KK19 citations92
US7550242B2Jun 23, 2009
Toner, toner manufacturing method, developer, image forming apparatus, and process cartridge for the image forming apparatus
RICOH KK22 citations92
US7749671B2Jul 6, 2010
Toner for developing a latent electrostatic image, image-forming method, image-forming apparatus and process cartridge using the same
RICOH KK15 citations84
US7727694B2Jun 1, 2010
Toner for developing electrostatic image, and image forming method and apparatus and process cartridge using the toner
RICOH KK9 citations84
US7695885B2Apr 13, 2010
Developer and image forming method using the developer
RICOH KK18 citations84
US7587159B2Sep 8, 2009
Image forming method and apparatus including a relationship between secondary roller diameter and recording medium ingress position
RICOH KK11 citations84
US7556906B2Jul 7, 2009
Toner, and image forming method, image forming apparatus, and process cartridge using the toner
RICOH KK13 citations84
US7820348B2Oct 26, 2010
Toner recovery apparatus, process cartridge, and image forming apparatus
RICOH KK6 citations74
US7817946B2Oct 19, 2010
Developing device, image developing method, image forming apparatus, image forming method, and process cartridge
RICOH KK7 citations74
JURI KEIICHIRO
6 patentsUS9026015B2May 5, 2015
Developing roller, and developing device, process cartridge and image forming method and apparatus using the developing roller
JURI KEIICHIRO3 citations61
US9851656B2Dec 26, 2017
Developing roller, toner and image forming apparatus
JURI KEIICHIRO1 citations51
US9122204B2Sep 1, 2015
Developing device, process cartridge, image forming apparatus, and image forming method
JURI KEIICHIRO0 citations51
US9031478B2May 12, 2015
Developing roller including a roughened outermost surface, and developing device and image forming apparatus including the same
JURI KEIICHIRO0 citations51
US9778602B2Oct 3, 2017
Image forming apparatus
JURI KEIICHIRO1 citations50
US9720354B2Aug 1, 2017
Intermediate transfer belt
JURI KEIICHIRO0 citations50
YASUNAGA HIDEAKI
3 patentsUS8103199B2Jan 24, 2012
Developing device, and image forming method and process cartridge using the developing device
YASUNAGA HIDEAKI2 citations60
US9983505B2May 29, 2018
Developing roller, process cartridge, image forming apparatus and image forming method
YASUNAGA HIDEAKI0 citations49
US9098013B2Aug 4, 2015
Developing roller, developing device, process cartridge, and image forming apparatus
YASUNAGA HIDEAKI1 citations49