Inventor
ITAYA MASAHIKO
JP54 patents
⚠️ This page may combine multiple inventors who share the name “ITAYA MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KONISHIROKU PHOTO IND
31 patentsUS4624559ANov 25, 1986
Developing method for electrostatic latent image
KONISHIROKU PHOTO IND31 citations93
US5327208AJul 5, 1994
Color image forming apparatus with a multicolor detachable process unit
KONISHIROKU PHOTO IND26 citations92
US5054419AOct 8, 1991
Image forming apparatus
KONISHIROKU PHOTO IND23 citations92
US5030988AJul 9, 1991
Color image forming apparatus
KONISHIROKU PHOTO IND25 citations92
US4530597AJul 23, 1985
Brush cleaning device
KONISHIROKU PHOTO IND26 citations82
US4492456AJan 8, 1985
Device for developing electrostatic latent images
KONISHIROKU PHOTO IND20 citations82
US4480911ANov 6, 1984
Developing apparatus and a developing method of an electrostatic image
KONISHIROKU PHOTO IND22 citations82
US4431296AFeb 14, 1984
Developing method and apparatus therefor
KONISHIROKU PHOTO IND19 citations82
US5103261AApr 7, 1992
Clamshell type color image forming apparatus
KONISHIROKU PHOTO IND21 citations78
US5075726ADec 24, 1991
Toner density control device with adjustable reference values for multiple developer copier
KONISHIROKU PHOTO IND19 citations74
US4822711AApr 18, 1989
Electrostatic image-developing process using a magnetic roller
KONISHIROKU PHOTO IND18 citations74
US4814818AMar 21, 1989
Developer layer forming apparatus
KONISHIROKU PHOTO IND7 citations74
US4664505AMay 12, 1987
Electrostatic image reproducing apparatus
KONISHIROKU PHOTO IND14 citations74
US4530595AJul 23, 1985
Toner cleaning method and apparatus in which voltage is impressed between electrostatic image holder and a film member
KONISHIROKU PHOTO IND13 citations74
US4525056AJun 25, 1985
Developing means for electrostatic latent image
KONISHIROKU PHOTO IND8 citations74
US4500616AFeb 19, 1985
Extraction developing method for electrostatic latent images
KONISHIROKU PHOTO IND14 citations74
US4499169AFeb 12, 1985
Developing method
KONISHIROKU PHOTO IND8 citations74
US4486089ADec 4, 1984
Magnetic brush developing means
KONISHIROKU PHOTO IND15 citations74
US5287161AFeb 15, 1994
Color image forming apparatus with a multicolor detachable process unit
KONISHIROKU PHOTO IND12 citations73
US5191378AMar 2, 1993
Electrostatic recording apparatus in which a transfer material conveyance belt detach point is located downstream from the image retainer
KONISHIROKU PHOTO IND17 citations73
US5140411AAug 18, 1992
Image reading apparatus capable of discriminating between a chromatic and an achromatic portion of an image
KONISHIROKU PHOTO IND16 citations73
US5121166AJun 9, 1992
Belt type transfer device
KONISHIROKU PHOTO IND11 citations73
US5024181AJun 18, 1991
Method for the development of an electrostatic latent image
KONISHIROKU PHOTO IND12 citations73
US4908291AMar 13, 1990
Method of regulating the thickness of a developer layer containing magnetic carrier and toner particles
KONISHIROKU PHOTO IND12 citations73
US4669864AJun 2, 1987
Image forming apparatus
KONISHIROKU PHOTO IND16 citations73
US4979000ADec 18, 1990
Paper separating charger capable of discharging currents of various duty factors and frequencies
KONISHIROKU PHOTO IND16 citations72
US4479709AOct 30, 1984
Cleaning method for electrophotography and means therefor
KONISHIROKU PHOTO IND10 citations69
US4553500ANov 19, 1985
Apparatus and method for developing electrostatic latent image
KONISHIROKU PHOTO IND5 citations63
US4491083AJan 1, 1985
Means for developing an electrostatic latent image
KONISHIROKU PHOTO IND2 citations63
US4478870AOct 23, 1984
Corona image transfer method
KONISHIROKU PHOTO IND3 citations63
US4477174AOct 16, 1984
Developing device
KONISHIROKU PHOTO IND3 citations63
RICOH KK
12 patentsUS6897002B2May 24, 2005
Liquid developer, image-fixing apparatus using the same, and image-forming apparatus using the same
RICOH KK78 citations98
US6108508AAug 22, 2000
Image forming apparatus using wet type developing device
RICOH KK60 citations96
US6539191B2Mar 25, 2003
Electrophotographic color image formation system and method using liquid developers
RICOH KK25 citations93
US6515747B1Feb 4, 2003
Method and device for measuring a substance concentration in a liquid
RICOH KK19 citations93
US6154624ANov 28, 2000
Image forming apparatus using a developing liquid
RICOH KK27 citations93
US5937247AAug 10, 1999
Ghostless developed image forming apparatus and method
RICOH KK41 citations93
US6876822B2Apr 5, 2005
Methods for forming and developing an image
RICOH KK17 citations92
US6694112B2Feb 17, 2004
Developing device using a developing liquid including a rotatable agitator in a developing liquid reservoir and image forming apparatus including the same
RICOH KK32 citations92
US6038421AMar 14, 2000
Image forming apparatus using a liquid development system
RICOH KK49 citations92
US6466757B2Oct 15, 2002
Developing device using a developing liquid and image forming apparatus including the same
RICOH KK17 citations84
US7141346B2Nov 28, 2006
Liquid developer for image forming apparatus
RICOH KK7 citations74
US7004650B2Feb 28, 2006
Developing device using a developing liquid and image forming apparatus including the same
RICOH KK10 citations74
AUSTRALIA RES LAB
4 patentsUS6167225ADec 26, 2000
Liquid developing method of electrostatic latent image and liquid developing apparatus
AUSTRALIA RES LAB29 citations93
US6207336B1Mar 27, 2001
Liquid developing method
AUSTRALIA RES LAB21 citations92
US6137976AOct 24, 2000
Image formation apparatus using a liquid developing agent
AUSTRALIA RES LAB31 citations92
US6029036AFeb 22, 2000
Liquid developing method and liquid developing apparatus
AUSTRALIA RES LAB45 citations92
NIPPON STEEL CORP
2 patentsSAMSUNG ELECTRONICS CO LTD
1 patentShowing the top 50 of 54 patents by PatentIndex Score.