P

Inventor

HOSOKAWA HIROSHI

JP164 patents
⚠️ This page may combine multiple inventors who share the name “HOSOKAWA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

34 patents
US7480476B2Jan 20, 2009

Developer container, developer supplying device, and image forming apparatus

RICOH KK115 citations99
US7321744B2Jan 22, 2008

Developer container, developer supplying device, and image forming apparatus

RICOH KK111 citations99
US7697870B2Apr 13, 2010

Developer container, developer supplying device, and image forming apparatus

RICOH KK54 citations98
US7519317B2Apr 14, 2009

Developer container, developer supplying device, and image forming apparatus

RICOH KK72 citations98
US7076192B2Jul 11, 2006

Powder conveying device and image forming apparatus using the same

RICOH KK55 citations96
US6560431B2May 6, 2003

Toner replenishing device and image forming apparatus using the same

RICOH KK56 citations96
US6249661B1Jun 19, 2001

Device for supporting an image carrier included in an image forming apparatus

RICOH KK60 citations96
US6033818AMar 7, 2000

Developing device for an image forming apparatus

RICOH KK53 citations96
US5879752AMar 9, 1999

Method of coating a toner conveyor roller

RICOH KK62 citations96
US5845183ADec 1, 1998

Developing device for an image forming apparatus

RICOH KK52 citations96
US5826144AOct 20, 1998

Developing device for an electrophotographic recording apparatus including bias control of a toner supplying roller

RICOH KK68 citations96
US5768665AJun 16, 1998

Image forming apparatus with bias control to prevent undesirable toner deposition

RICOH KK58 citations96
US5708942AJan 13, 1998

Developing device for an image forming apparatus

RICOH KK53 citations96
US5697026ADec 9, 1997

Developing device having the lengths of two toner transporting rollers and an image bearing member in specific relationships

RICOH KK62 citations96
US5625440AApr 29, 1997

Developing device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scattering

RICOH KK64 citations96
US5625438AApr 29, 1997

Toner, and devices for electrostatically depositing a uniform application thereof

RICOH KK40 citations96
US5625441AApr 29, 1997

Developing device for an image forming apparatus

RICOH KK54 citations96
US5617191AApr 1, 1997

Toner conveyor roller and image forming apparatus having the same

RICOH KK84 citations96
US5489747AFeb 6, 1996

Developing device for an image forming apparatus

RICOH KK73 citations96
US5486909AJan 23, 1996

Developing device for an image forming apparatus

RICOH KK56 citations96
US5482265AJan 9, 1996

Sheet feeder for an image forming apparatus

RICOH KK91 citations96
US5666625ASep 9, 1997

Device for electrostatically developing a latent image on an image carrier

RICOH KK62 citations95
US6212343B1Apr 3, 2001

Developing device, process cartridge and image forming apparatus that prevent toner leakage

RICOH KK93 citations94
US6163666ADec 19, 2000

Process cartridge and an image forming apparatus using the same process cartridge and a method of manufacturing the same process cartridge

RICOH KK81 citations94
US5689782ANov 18, 1997

Developing apparatus for electronic photographic recording equipment, having two developer transfer rollers

RICOH KK64 citations94
US4875063AOct 17, 1989

Electrostatic recording apparatus

RICOH KK58 citations94
US7398038B2Jul 8, 2008

Image forming apparatus using a toner container and a process cartridge

RICOH KK47 citations93
US7212767B2May 1, 2007

Image forming apparatus and process cartridge removably mounted thereto

RICOH KK27 citations93
US5819145AOct 6, 1998

Image forming device for forming a uniform toner layer on a developing roller

RICOH KK41 citations93
US5627630AMay 6, 1997

Developing apparatus having a toner supporting roller with an inner layer and surface layer

RICOH KK48 citations93
US7136610B2Nov 14, 2006

Image forming apparatus using installable process cartridge, method of positioning process cartridge, and process cartridge itself

RICOH KK38 citations92
US7024133B2Apr 4, 2006

Image forming apparatus using a user installable process cartridge, a method of arranging the process cartridge, and the process cartridge itself

RICOH KK50 citations92
US5930561AJul 27, 1999

Process cartridge and image-formation device suitable for miniaturization

RICOH KK44 citations92
US5552870ASep 3, 1996

Developing device for an image forming apparatus

RICOH KK39 citations92

SANYO ELECTRIC CO

5 patents

RICOH CO LTD

4 patents

HOSOKAWA HIROSHI

2 patents

CANON KK

2 patents

MITSUBISHI RAYON CO

1 patent

SEIKO EPSON CORP

1 patent

MITSUBISHI ELECTRIC CORP

1 patent

Showing the top 50 of 164 patents by PatentIndex Score.