Inventor

OKAJI HIROYUKI

JP8 patents

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

RICOH KK

3 patents

US6128449AOct 3, 2000

Image forming apparatus and method for controlling charging and developing bias voltage

RICOH KK72 citations95

US7801467B2Sep 21, 2010

Developing-agent container, method of manufacturing developing-agent container, developing-agent supplying device, and image forming apparatus

RICOH KK8 citations83

US7787813B2Aug 31, 2010

Image forming apparatus capable of stably conveying recording medium

RICOH KK2 citations60

RICOH CO LTD

3 patents

US7991330B2Aug 2, 2011

Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridge

RICOH CO LTD2 citations62

US7925190B2Apr 12, 2011

Developer supply device and image forming apparatus comprising same

RICOH CO LTD5 citations61

US7962078B2Jun 14, 2011

Image forming apparatus capable of stably conveying recording medium

RICOH CO LTD0 citations49

UNO MUGIJIROU

1 patent

US8086146B2Dec 27, 2011

Image forming method and apparatus for effectively supplying developer

UNO MUGIJIROU3 citations60

OKAJI HIROYUKI

1 patent

US8180249B2May 15, 2012

Image forming apparatus

OKAJI HIROYUKI2 citations54