Inventor
OKAMURA TAKEHIKO
JP28 patents
⚠️ This page may combine multiple inventors who share the name “OKAMURA TAKEHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
25 patentsUS5655197AAug 5, 1997
Developing device
SEIKO EPSON CORP47 citations96
US5557060ASep 17, 1996
Developing device
SEIKO EPSON CORP30 citations93
US6035154AMar 7, 2000
Image forming apparatus
SEIKO EPSON CORP37 citations92
US7809287B2Oct 5, 2010
Consumable cartridge and image forming apparatus using the same
SEIKO EPSON CORP8 citations84
US7113711B2Sep 26, 2006
Device and method of managing life of toner cartridge, and image forming apparatus using the same
SEIKO EPSON CORP11 citations84
US6941100B2Sep 6, 2005
Developer bearing member, method for producing developer bearing member, developing device, image-forming apparatus, and computer system
SEIKO EPSON CORP15 citations84
US7187893B2Mar 6, 2007
Image transfer unit having an intermediate transfer belt to which a toner image is applied
SEIKO EPSON CORP7 citations74
USD500075SDec 21, 2004
Toner cartridge
SEIKO EPSON CORP10 citations74
US6731899B2May 4, 2004
Intermediate transfer unit
SEIKO EPSON CORP10 citations74
US6507722B2Jan 14, 2003
Developing device
SEIKO EPSON CORP7 citations74
US6408158B1Jun 18, 2002
Intermediate transfer unit
SEIKO EPSON CORP11 citations74
US6223015B1Apr 24, 2001
Recording medium carrier system intermediate transfer unit
SEIKO EPSON CORP12 citations74
US6173139B1Jan 9, 2001
Recording medium carrier system having a paper feed unit, a transfer unit, a fixing unit and a paper ejecting unit constructed as independent units
SEIKO EPSON CORP10 citations74
US5149914ASep 22, 1992
Development apparatus using a flexible magnetic field forming layer
SEIKO EPSON CORP17 citations69
US6999707B2Feb 14, 2006
Method of forming image and image forming apparatus
SEIKO EPSON CORP5 citations63
US6957032B2Oct 18, 2005
Intermediate transfer unit having a primary transfer member and a secondary transfer roller
SEIKO EPSON CORP2 citations63
US6856782B2Feb 15, 2005
Intermediate transfer unit having a primary and a secondary transfer member
SEIKO EPSON CORP6 citations63
US6526238B2Feb 25, 2003
Developing device
SEIKO EPSON CORP2 citations63
US6281963B1Aug 28, 2001
Image forming apparatus
SEIKO EPSON CORP6 citations63
US5453819ASep 26, 1995
Charger apparatus
SEIKO EPSON CORP6 citations62
US7509064B2Mar 24, 2009
Image forming apparatus, a toner counter and a calculation method of toner consumption
SEIKO EPSON CORP2 citations61
US7289743B2Oct 30, 2007
Image forming apparatus, a toner counter and a calculation method of toner consumption
SEIKO EPSON CORP4 citations61
US7773889B2Aug 10, 2010
Image forming apparatus and method of setting the same
SEIKO EPSON CORP2 citations55
US7158744B2Jan 2, 2007
Developing device, image forming apparatus, and image forming system
SEIKO EPSON CORP0 citations52
US7489882B2Feb 10, 2009
Image forming apparatus, a toner counter and a calculation method of toner consumption
SEIKO EPSON CORP0 citations51