Inventor
MIZUSAWA HIROSHI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “MIZUSAWA HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
14 patentsUS6266501B1Jul 24, 2001
Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal
RICOH KK90 citations98
US6085062AJul 4, 2000
Electrophotographic image forming apparatus
RICOH KK100 citations97
US6628903B1Sep 30, 2003
Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper
RICOH KK52 citations96
US6148161ANov 14, 2000
Image forming apparatus with improved toner density control
RICOH KK64 citations96
US6144811ANov 7, 2000
Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper
RICOH KK70 citations96
US6144822ANov 7, 2000
Image forming apparatus having detachable transfer roller and discharge device
RICOH KK63 citations96
US6160969ADec 12, 2000
Image forming apparatus with a voltage applying unit for image transfer
RICOH KK57 citations95
US6128449AOct 3, 2000
Image forming apparatus and method for controlling charging and developing bias voltage
RICOH KK72 citations95
US6807390B2Oct 19, 2004
Image forming apparatus
RICOH KK37 citations93
US7313347B2Dec 25, 2007
Cleaning device, process cartridge, image forming apparatus and toner
RICOH KK32 citations92
US6898383B2May 24, 2005
Image forming apparatus
RICOH KK19 citations92
US7177555B2Feb 13, 2007
Image forming process and image forming apparatus
RICOH KK18 citations84
US7139503B2Nov 21, 2006
Cleaning apparatus with conductive member
RICOH KK2 citations63
US7068960B2Jun 27, 2006
Cleaning device including brush roller with high cleaning performance, image forming apparatus and process unit including the cleaning device, method of removing deposit, and method of forming an image
RICOH KK5 citations63
MIZUSAWA HIROSHI
4 patentsUS9405227B2Aug 2, 2016
Powder conveying device, process cartridge, and image forming apparatus
MIZUSAWA HIROSHI0 citations49
US12312119B2May 27, 2025
Feeding device and image forming apparatus
MIZUSAWA HIROSHI0 citations46
US9031456B2May 12, 2015
Image forming apparatus, detachable unit, and plural detachable units
MIZUSAWA HIROSHI0 citations39
US8543029B2Sep 24, 2013
Image forming apparatus, image forming method, and process cartridge for adjusting applications of lubricants
MIZUSAWA HIROSHI0 citations39