P

Inventor

ICHIKAWA KAZUHIRO

JP55 patents
⚠️ This page may combine multiple inventors who share the name “ICHIKAWA KAZUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SEIKO EPSON CORP

22 patents
US5893665AApr 13, 1999

Image forming apparatus

SEIKO EPSON CORP23 citations93
US5697033ADec 9, 1997

Image forming apparatus with film transfer member

SEIKO EPSON CORP33 citations93
US6336022B2Jan 1, 2002

Developing unit

SEIKO EPSON CORP15 citations92
US6198893B1Mar 6, 2001

Image forming apparatus having a plurality of developing units

SEIKO EPSON CORP16 citations92
US6192209B1Feb 20, 2001

Developing unit

SEIKO EPSON CORP16 citations92
US6163674ADec 19, 2000

Developing unit having developing roller with restraining blade

SEIKO EPSON CORP18 citations92
US6146802ANov 14, 2000

Toner and development unit and image forming apparatus using the same

SEIKO EPSON CORP26 citations92
US6226484B1May 1, 2001

Developing unit using specific developer composition

SEIKO EPSON CORP12 citations82
US6151474ANov 21, 2000

Developing unit using elastic supply roller

SEIKO EPSON CORP11 citations82
US6094554AJul 25, 2000

Developing unit having developing roller with specific side surface roughness

SEIKO EPSON CORP11 citations82
US7043167B2May 9, 2006

Image formation device and image formation method that selectively adapts a process of fixing an image on a medium

SEIKO EPSON CORP8 citations74
US7013101B2Mar 14, 2006

Cartridge recycling information apparatus, corresponding method, and cartridge to be recycled

SEIKO EPSON CORP9 citations74
US6358654B1Mar 19, 2002

Toner and development unit and image forming apparatus using the same

SEIKO EPSON CORP5 citations74
US6295433B1Sep 25, 2001

Developing unit having a conveying fin for loading a supply roller with toner

SEIKO EPSON CORP7 citations74
US11008707B2May 18, 2021

Sheet manufacturing apparatus, sheet manufacturing system, control method of a sheet manufacturing apparatus, and sheet manufacturing method

SEIKO EPSON CORP4 citations72
US7324232B2Jan 29, 2008

Printer, printer setting method and corresponding program, and cartridge

SEIKO EPSON CORP4 citations63
US7231160B2Jun 12, 2007

Printing device and printing method

SEIKO EPSON CORP5 citations63
US7177556B2Feb 13, 2007

Image formation device and recording agent cartridge attached thereto

SEIKO EPSON CORP5 citations63
US6983111B2Jan 3, 2006

Image formation device and image formation method

SEIKO EPSON CORP6 citations63
US6605401B2Aug 12, 2003

Toner and development unit and image forming apparatus using the same

SEIKO EPSON CORP1 citations63
US7783234B2Aug 24, 2010

Developer cartridge, image forming apparatus, and shutter device

SEIKO EPSON CORP6 citations62
US11077581B2Aug 3, 2021

Sheet manufacturing apparatus and control method of sheet manufacturing apparatus

SEIKO EPSON CORP0 citations51

KAWASAKI HEAVY IND LTD

6 patents

KAWASAKI MOTORS LTD

5 patents

TONEN SEKIYUKAGAKU KK

2 patents

NEC CORP

2 patents

TOP KK

2 patents

SAKAUE KENJI

2 patents

DENSO CORP

2 patents

ICHIKAWA KAZUHIRO

2 patents

FUNAI ELECTRIC CO

2 patents

SHIRAKI MANABU

1 patent

DAINIPPON INK & CHEMICALS

1 patent

NEC TOKIN CORP

1 patent

Showing the top 50 of 55 patents by PatentIndex Score.