Inventor
TOIZUMI KIYOSHI
JP32 patents
⚠️ This page may combine multiple inventors who share the name “TOIZUMI KIYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
31 patentsUS6934496B2Aug 23, 2005
Developing device conveying toner using a traveling-wave electric field and image forming apparatus using same
SHARP KK31 citations92
US6901232B2May 31, 2005
Developing apparatus and image forming apparatus using progressive wave electric field transport
SHARP KK22 citations92
US6108514AAug 22, 2000
Sheet conveying system
SHARP KK39 citations92
US5812923ASep 22, 1998
Image forming apparatus equipped with register rollers for curling transfer paper
SHARP KK25 citations92
US5799225AAug 25, 1998
Image forming apparatus having variable transfer and attraction voltage
SHARP KK19 citations92
US5956547ASep 21, 1999
Image forming device equipped with fixing device
SHARP KK32 citations91
US6858369B1Feb 22, 2005
Toner and manufacturing method thereof
SHARP KK15 citations83
US5623329AApr 22, 1997
Transfer device for an image forming apparatus
SHARP KK16 citations82
US6011938AJan 4, 2000
Fixing device in image forming device
SHARP KK11 citations74
US5697034ADec 9, 1997
Image forming apparatus which stably holds a uniform surface potential of a transfer device
SHARP KK12 citations74
US6697592B2Feb 24, 2004
Developing device, and image forming device having the same
SHARP KK12 citations73
US6596454B2Jul 22, 2003
Toner and manufacturing method thereof
SHARP KK9 citations73
US6259869B1Jul 10, 2001
Image forming apparatus
SHARP KK4 citations73
US6233422B1May 15, 2001
Image forming apparatus having transfer drum with transfer paper charging member
SHARP KK8 citations73
US6081685AJun 27, 2000
Transfer apparatus having a transfer drum
SHARP KK9 citations73
US6026256AFeb 15, 2000
Image forming apparatus
SHARP KK5 citations73
US6600892B2Jul 29, 2003
Developing device, charging method used therefor, and printing apparatus having the developing device
SHARP KK11 citations72
US6438346B2Aug 20, 2002
Developing device, printing device, and charging method through contact
SHARP KK7 citations72
US11044375B2Jun 22, 2021
Multifunctional apparatus having external recording medium slot
SHARP KK0 citations62
US7524600B2Apr 28, 2009
Electrophotographic toner
SHARP KK4 citations62
US7283775B2Oct 16, 2007
Developing device using specific charging unit for charging toner and image forming device adopting the same
SHARP KK2 citations62
US7015938B2Mar 21, 2006
Charging system
SHARP KK2 citations62
US6865350B2Mar 8, 2005
Charging method and developing device adopting the same
SHARP KK2 citations62
US6829446B2Dec 7, 2004
Development device, charging method used in the development device and image forming device having the development device
SHARP KK6 citations62
US6169862B1Jan 2, 2001
Image forming apparatus with nip time changing device
SHARP KK1 citations62
US6081686AJun 27, 2000
Image forming apparatus having transfer drum with specific construction
SHARP KK2 citations62
US7761020B2Jul 20, 2010
Image forming apparatus utilizing cylindrical toner particles
SHARP KK2 citations58
US7071960B2Jul 4, 2006
Image forming apparatus
SHARP KK0 citations52
US6118954ASep 12, 2000
Image forming apparatus having transfer roller with charge-removing and cleaning devices
SHARP KK0 citations52
US8053155B2Nov 8, 2011
Toner, two-component developer, developing device, and image forming apparatus
SHARP KK1 citations51
US8372572B2Feb 12, 2013
Toner, two-component developer, developing device and image forming apparatus
SHARP KK0 citations41