P

Inventor

HASEGAWA SHIN

JP172 patents
⚠️ This page may combine multiple inventors who share the name “HASEGAWA SHIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

30 patents
US5387965AFeb 7, 1995

Toner concentration control method

RICOH KK75 citations96
US5327196AJul 5, 1994

Image forming method

RICOH KK83 citations96
US5198861AMar 30, 1993

Image density control method for an image forming apparatus for reducing background contamination of a photoconductive drum

RICOH KK57 citations95
US7551862B2Jun 23, 2009

Developing device, and process unit and image forming apparatus using the developing device

RICOH KK29 citations93
US6256459B1Jul 3, 2001

Developing apparatus and image forming apparatus using the same developing apparatus and method of determining end-of-toner condition

RICOH KK51 citations93
US5857131AJan 5, 1999

Image forming condition control device and method for an image forming apparatus

RICOH KK39 citations93
US7798629B2Sep 21, 2010

Pigment dispersion, inkjet-ink using the pigment dispersion, image forming process, and image forming apparatus

RICOH KK18 citations92
US7616909B2Nov 10, 2009

Image forming apparatus and image forming method

RICOH KK21 citations92
US7272354B2Sep 18, 2007

Cleaning unit and image forming apparatus having multiple cleaning blades

RICOH KK27 citations92
US7260335B2Aug 21, 2007

Image-information detecting device and image forming apparatus

RICOH KK24 citations92
US7251420B2Jul 31, 2007

Method and apparatus for image forming capable of effectively detecting toner density

RICOH KK42 citations92
US7228081B2Jun 5, 2007

Method and apparatus for image forming capable of controlling image-forming process conditions

RICOH KK37 citations92
US7110696B2Sep 19, 2006

Cleaning unit, process cartridge, and image forming apparatus

RICOH KK27 citations92
US7101919B2Sep 5, 2006

Inkjet, inkjet cartridge containing the inkjet ink, inkjet recording apparatus using the inkjet ink, inkjet recording method using the inkjet ink, and image formed by the inkjet recording method

RICOH KK31 citations92
US6786959B2Sep 7, 2004

Pigment dispersion, method for preparing the pigment dispersion, inkjet ink using the pigment dispersion, method for preparing the inkjet ink, ink cartridge containing the inkjet ink, image forming method and apparatus using the inkjet ink, and print image produced by the image forming method and apparatus

RICOH KK29 citations92
US5182600AJan 26, 1993

Toner end detecting method for an electrophotographic copier

RICOH KK43 citations91
US6798996B2Sep 28, 2004

Image forming apparatus

RICOH KK22 citations90
US7778560B2Aug 17, 2010

Image forming apparatus and method of adjusting charge bias

RICOH KK10 citations84
US7747182B2Jun 29, 2010

Image forming apparatus with toner density control

RICOH KK9 citations84
US7664413B2Feb 16, 2010

Image forming device including a toner pattern forming unit

RICOH KK10 citations84
US7551864B2Jun 23, 2009

Image forming apparatus and method of controlling an image quality

RICOH KK12 citations84
US7551866B2Jun 23, 2009

Image forming method and apparatus with improved conversion capability of amount of toner adhesion

RICOH KK8 citations84
US7548704B2Jun 16, 2009

Image forming apparatus effectively conducting a process control

RICOH KK8 citations84
US7536121B2May 19, 2009

Image forming apparatus and image density control method

RICOH KK16 citations84
US7493058B2Feb 17, 2009

Image forming apparatus and toner concentration controlling method

RICOH KK13 citations84
US7177555B2Feb 13, 2007

Image forming process and image forming apparatus

RICOH KK18 citations84
US7815301B2Oct 19, 2010

Water-based pigment dispersion, production method thereof, water-based pigment ink, production method thereof, ink record, inkjet recording apparatus, and inkjet recording method

RICOH KK10 citations83
US7515844B2Apr 7, 2009

Image density control method and image forming apparatus

RICOH KK19 citations83
US7672602B2Mar 2, 2010

Developing unit and image forming apparatus which forces consumption of toner

RICOH KK7 citations74
US5508787AApr 16, 1996

Method and apparatus for controlling process condition for image formation

RICOH KK18 citations74

FURUKAWA ELECTRIC CO LTD

4 patents

BROTHER IND LTD

3 patents

MITSUBISHI ELECTRIC CORP

2 patents

SONY CORP

2 patents

CANON KK

2 patents

ISHIBASHI HITOSHI

2 patents

HASEGAWA SHIN

1 patent

TOYOTAMA PERFUMERY

1 patent

RICOH CO LTD

1 patent

TOSHIBA KK

1 patent

OHTA YOSHIKI

1 patent

Showing the top 50 of 172 patents by PatentIndex Score.