Inventor
HIRATA KATSUYUKI
JP33 patents
⚠️ This page may combine multiple inventors who share the name “HIRATA KATSUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINOLTA CO LTD
12 patentsUS5995248ANov 30, 1999
Image forming device and method having MTF correction
MINOLTA CO LTD58 citations94
US6982813B2Jan 3, 2006
Light quantity correction method for exposing device, and image forming device
MINOLTA CO LTD22 citations92
US6388768B2May 14, 2002
Image forming apparatus which excels in reproducibility of colors, fine lines and gradations even in a copy made from a copied image
MINOLTA CO LTD41 citations92
US6028957AFeb 22, 2000
Image forming apparatus having a noise removing unit
MINOLTA CO LTD51 citations92
US5999279ADec 7, 1999
Image forming apparatus having an MTF correction unit
MINOLTA CO LTD39 citations92
US5966222AOct 12, 1999
Image forming apparatus having a saturation correction unit
MINOLTA CO LTD34 citations92
US5694223ADec 2, 1997
Digital image forming apparatus which specifies a sensitivity characteristic of a photoconductor
MINOLTA CO LTD31 citations92
US6462838B1Oct 8, 2002
Method of and apparatus for forming an image
MINOLTA CO LTD19 citations84
US6094502AJul 25, 2000
Image formation apparatus that allows correction of γ correction data and adjustment method thereof
MINOLTA CO LTD14 citations74
US5715067AFeb 3, 1998
Digital image forming apparatus and method with variable duty ratio
MINOLTA CO LTD7 citations73
US5949963ASep 7, 1999
Image formation apparatus exposing photoconductor according to image density data to form image thereon
MINOLTA CO LTD3 citations63
US5933255AAug 3, 1999
Digital image forming apparatus
MINOLTA CO LTD6 citations62
KONICA MINOLTA BUSINESS TECH
6 patentsUS7149439B2Dec 12, 2006
Method and device for estimating toner concentration and image forming apparatus equipped with such device
KONICA MINOLTA BUSINESS TECH19 citations92
US7840148B2Nov 23, 2010
Image forming apparatus and method for detecting separated state of transfer member
KONICA MINOLTA BUSINESS TECH9 citations83
US7181148B2Feb 20, 2007
Image forming apparatus and device for determining the density and position of a toner pattern
KONICA MINOLTA BUSINESS TECH4 citations62
US8023839B2Sep 20, 2011
Developing apparatus and image forming machine
KONICA MINOLTA BUSINESS TECH3 citations61
US8045872B2Oct 25, 2011
Image-forming apparatus containing electrophotographic system and image-forming method
KONICA MINOLTA BUSINESS TECH1 citations47
US7697856B2Apr 13, 2010
Image forming apparatus and method for detecting separated state of transfer unit
KONICA MINOLTA BUSINESS TECH0 citations41
KONICA MINOLTA INC
6 patentsUS8971740B2Mar 3, 2015
Image forming apparatus
KONICA MINOLTA INC2 citations62
US8938174B2Jan 20, 2015
Image forming apparatus and image forming method
KONICA MINOLTA INC3 citations62
US9686428B2Jun 20, 2017
Equipment to determine line width of check image and image-forming apparatus using the same
KONICA MINOLTA INC0 citations50
US9420133B2Aug 16, 2016
Image forming apparatus
KONICA MINOLTA INC0 citations42
US9354541B2May 31, 2016
Image forming apparatus and exposure position adjusting method
KONICA MINOLTA INC0 citations42
US9442413B2Sep 13, 2016
Image forming apparatus and exposure position adjusting method
KONICA MINOLTA INC0 citations40