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 patentsUS7266324B2Sep 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 patentsUS8000627B2Aug 16, 2011
Charging device, process cartridge, image forming apparatus, and toner
RICOH CO LTD10 citations84
US7953363B2May 31, 2011
Lubricant applicator and image forming apparatus including same
RICOH CO LTD11 citations84
US10852689B2Dec 1, 2020
Powder container and image forming apparatus
RICOH CO LTD1 citations72
US10635043B2Apr 28, 2020
Powder container and image forming apparatus
RICOH CO LTD1 citations72
US10520856B2Dec 31, 2019
Developing device, process cartridge, and image forming apparatus incorporating same
RICOH CO LTD2 citations72
AJINOMOTO KK
3 patentsIWATSU ELECTRIC CO LTD
2 patentsULVAC INC
2 patentsTAKAMI NOBUO
2 patentsMORITEX CORP
1 patentSUMITOMO CHEMICAL CO
1 patentNITTCO CHEMICAL INDUSTRY CO LT
1 patentNAGASHIMA HIROYUKI
1 patentRICOH COMPANY LIMTED
1 patentULVAC CORP
1 patentSANYO ELECTRIC CO
1 patentMIZUISHI HARUJI
1 patentKATOH ELECTRIC CO LTD
1 patentShowing the top 50 of 95 patents by PatentIndex Score.