Inventor
IZUMI TAKAO
JP62 patents
⚠️ This page may combine multiple inventors who share the name “IZUMI TAKAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA TEC KK
20 patentsUS6519437B1Feb 11, 2003
Prevention of excessive toner accumulation in a developing apparatus
TOSHIBA TEC KK15 citations84
US6337967B1Jan 8, 2002
Image forming apparatus for superposing monochrome images
TOSHIBA TEC KK18 citations84
US6567639B1May 20, 2003
Fixing device for heat pressure fixing a record medium and method thereof
TOSHIBA TEC KK8 citations74
US6519434B2Feb 11, 2003
Image forming apparatus
TOSHIBA TEC KK9 citations74
US6516174B1Feb 4, 2003
Developing apparatus having developer regulating blade
TOSHIBA TEC KK9 citations74
US6512910B2Jan 28, 2003
Developing apparatus
TOSHIBA TEC KK10 citations74
US10866553B1Dec 15, 2020
Image forming apparatus, determination method, and developer processing apparatus configured to determine timing for replacement of developer based on a history of a deterioration index
TOSHIBA TEC KK2 citations73
US7099615B2Aug 29, 2006
Image forming apparatus with guide member guiding image forming medium
TOSHIBA TEC KK6 citations63
US6959160B2Oct 25, 2005
Image forming apparatus
TOSHIBA TEC KK2 citations63
US6539193B1Mar 25, 2003
Developing apparatus and image forming apparatus for stably forming a developer layer on a developer device
TOSHIBA TEC KK4 citations63
US6501923B2Dec 31, 2002
Image forming apparatus with increased heat dissipation structure
TOSHIBA TEC KK6 citations63
US6484006B2Nov 19, 2002
Developing device with developer layer regulating blade
TOSHIBA TEC KK4 citations63
US6473573B2Oct 29, 2002
Developing apparatus with temperature sensor
TOSHIBA TEC KK4 citations63
US11067931B2Jul 20, 2021
Image forming apparatus and system that reduce defects caused by residual toner
TOSHIBA TEC KK0 citations62
US12019389B2Jun 25, 2024
Image forming apparatus
TOSHIBA TEC KK0 citations61
US11754954B2Sep 12, 2023
Image forming apparatus
TOSHIBA TEC KK0 citations61
US12449751B2Oct 21, 2025
Image forming apparatus having service summons control and corresponding method
TOSHIBA TEC KK0 citations52
US12072644B1Aug 27, 2024
Image forming apparatus
TOSHIBA TEC KK0 citations52
US10754283B1Aug 25, 2020
Image forming apparatus and system that reduce defects caused by residual toner
TOSHIBA TEC KK0 citations52
US10754293B1Aug 25, 2020
Image forming apparatus having heater, temperature sensor and controller which disables print suspend operation
TOSHIBA TEC KK0 citations52
TOSHIBA KK
18 patentsUS6167229ADec 26, 2000
Image forming apparatus for enabling easy separation of recording sheets from photosensitive member
TOSHIBA KK19 citations93
US6044244AMar 28, 2000
Image forming apparatus for enabling easy separation of recording sheets from photosensitive member
TOSHIBA KK20 citations93
US6766125B1Jul 20, 2004
Image forming apparatus
TOSHIBA KK28 citations92
US5404211AApr 4, 1995
Developing device including device for selecting varying the thickness of the developing agent
TOSHIBA KK26 citations90
US6785486B2Aug 31, 2004
Image forming apparatus
TOSHIBA KK5 citations74
US6625414B2Sep 23, 2003
Image forming apparatus with recovery device for recovering color developers
TOSHIBA KK8 citations74
US6009286ADec 28, 1999
Image forming apparatus with disturbance elimination
TOSHIBA KK15 citations74
US7831181B2Nov 9, 2010
Developing device
TOSHIBA KK4 citations63
US7742712B2Jun 22, 2010
Transfer bias voltage controlling apparatus
TOSHIBA KK3 citations63
US7684717B2Mar 23, 2010
Image forming apparatus and image forming method
TOSHIBA KK4 citations63
US7496306B2Feb 24, 2009
Cleaning method for transfer device of image forming apparatus
TOSHIBA KK6 citations63
US7383002B2Jun 3, 2008
Developing device, process cartridge and image forming apparatus
TOSHIBA KK5 citations63
US7995955B2Aug 9, 2011
Image forming apparatus, developing device and developer discharge mechanism
TOSHIBA KK2 citations62
US5698356ADec 16, 1997
Method of manufacturing developing agent
TOSHIBA KK5 citations62
US8045897B2Oct 25, 2011
Developing device
TOSHIBA KK0 citations52
US7899379B2Mar 1, 2011
Image forming apparatus and toner manufacturing method
TOSHIBA KK0 citations52
US7356291B2Apr 8, 2008
Developing unit, image forming apparatus method that supplies inverse transfer preventing agent with inverse polarity
TOSHIBA KK0 citations52
US10942473B2Mar 9, 2021
Airflow guides in developing device
TOSHIBA KK0 citations51
IZUMI TAKAO
5 patentsUS8328309B2Dec 11, 2012
Ink jet head and method of driving the same
IZUMI TAKAO3 citations61
US8099002B2Jan 17, 2012
Developing device of image forming apparatus using a toner and carrier mixture
IZUMI TAKAO2 citations61
US8244161B2Aug 14, 2012
Developing apparatus
IZUMI TAKAO0 citations51
US8213812B2Jul 3, 2012
Image forming apparatus, method of determining deterioration degree of development agent, and program of determining deterioration degree of development agent
IZUMI TAKAO1 citations51
US8107834B2Jan 31, 2012
Image forming apparatus and control method for the same
IZUMI TAKAO1 citations51
NISSAN MOTOR
2 patentsDENSO CORP
2 patentsHOSHINO MAKI
2 patentsSONY CORP
1 patentShowing the top 50 of 62 patents by PatentIndex Score.