P

Inventor

KOIKE TOSHIO

JP95 patents
⚠️ This page may combine multiple inventors who share the name “KOIKE TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

27 patents
US7266324B2Sep 4, 2007

Charging device, and process cartridge and image forming apparatus using the charging device

RICOH KK18 citations93
US7139504B2Nov 21, 2006

Charging device, and process cartridge and image forming apparatus using the charging device

RICOH KK24 citations93
US7050741B2May 23, 2006

Imaging apparatus, and toner and process cartridge used in the imaging apparatus

RICOH KK20 citations93
US7373101B2May 13, 2008

Method and apparatus for image forming and effectively applying lubricant to an image bearing member

RICOH KK24 citations92
US7313347B2Dec 25, 2007

Cleaning device, process cartridge, image forming apparatus and toner

RICOH KK32 citations92
US7272354B2Sep 18, 2007

Cleaning unit and image forming apparatus having multiple cleaning blades

RICOH KK27 citations92
US7228099B2Jun 5, 2007

Cleaning device for cleaning a surface of an image support body

RICOH KK21 citations92
US7149465B2Dec 12, 2006

Cleaning unit, process cartridge, image forming apparatus, and toner

RICOH KK26 citations92
US7110696B2Sep 19, 2006

Cleaning unit, process cartridge, and image forming apparatus

RICOH KK27 citations92
US7062194B2Jun 13, 2006

Charging device, and process cartridge and image forming apparatus including the charging device

RICOH KK31 citations92
US6873814B2Mar 29, 2005

Developing device using a two-ingredient type developer and image forming apparatus including the same

RICOH KK36 citations92
US6856774B2Feb 15, 2005

Developing device including magnetic member provided on toner-scattering restraining device and image forming apparatus including the developing device

RICOH KK26 citations92
US7826786B2Nov 2, 2010

Image forming apparatus, lubricant applying device, transfer device, process cartridge, and toner

RICOH KK17 citations84
US7672635B2Mar 2, 2010

Method and apparatus for image forming and effectively applying lubricant to an image bearing member

RICOH KK8 citations84
US7430377B2Sep 30, 2008

Image forming apparatus and process cartridge having a detachable unit body having a lubricant applying unit and image carrier mounted thereon

RICOH KK12 citations84
US7333744B2Feb 19, 2008

Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage

RICOH KK11 citations84
US7295796B1Nov 13, 2007

Image forming apparatus having a temporary toner holding device and a toner collecting device

RICOH KK14 citations84
US7292816B2Nov 6, 2007

Method and apparatus for electrophotographic image forming capable of effectively removing residual toner, a cleaning mechanism used therein, a process cartridge including the cleaning mechanism used in the apparatus, and toner used in the apparatus

RICOH KK16 citations84
US7218877B2May 15, 2007

Charging device, and process cartridge and image forming apparatus including the charging device using the same

RICOH KK12 citations84
US7085528B2Aug 1, 2006

Cleaning unit, process cartridge, and image forming apparatus

RICOH KK12 citations84
US7493075B2Feb 17, 2009

Cleaning device, process cartridge and image forming apparatus

RICOH KK13 citations83
US7477862B2Jan 13, 2009

Charged device, cleaning device, process cartridge, toner, and image-forming device that uses these

RICOH KK13 citations83
US7386257B2Jun 10, 2008

Imaging apparatus, and toner and process cartridge used in the imaging apparatus

RICOH KK7 citations74
US7130564B2Oct 31, 2006

Method and apparatus for image forming capable of removing residual toner without using a toner cleaning system, process cartridge for use in the apparatus and toner used for the image forming

RICOH KK8 citations74
US7065316B2Jun 20, 2006

Cleaning unit, process cartridge, image forming apparatus, and toner

RICOH KK10 citations74
US7680429B2Mar 16, 2010

Charging device including charging roller and cleaning roller

RICOH KK7 citations73
US6990305B2Jan 24, 2006

Charging device using a charge roller and image forming apparatus including the same

RICOH KK10 citations73

RICOH CO LTD

5 patents

AJINOMOTO KK

3 patents

IWATSU ELECTRIC CO LTD

2 patents

ULVAC INC

2 patents

TAKAMI NOBUO

2 patents

MORITEX CORP

1 patent

SUMITOMO CHEMICAL CO

1 patent

NITTCO CHEMICAL INDUSTRY CO LT

1 patent

NAGASHIMA HIROYUKI

1 patent

RICOH COMPANY LIMTED

1 patent

ULVAC CORP

1 patent

SANYO ELECTRIC CO

1 patent

MIZUISHI HARUJI

1 patent

KATOH ELECTRIC CO LTD

1 patent

Showing the top 50 of 95 patents by PatentIndex Score.