Inventor
HAYASHI YOSHINORI
209 patents
⚠️ This page may combine multiple inventors who share the name “HAYASHI YOSHINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
48 patentsUS6400391B1Jun 4, 2002
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK132 citations99
US6081386AJun 27, 2000
Optical scanning lens, optical scanning and imaging system and optical scanning apparatus incorporating same
RICOH KK155 citations99
US7271824B2Sep 18, 2007
Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocks
RICOH KK83 citations98
US7253937B2Aug 7, 2007
Multi-beam optical scanning device and image forming apparatus
RICOH KK59 citations98
US7218432B2May 15, 2007
Optical scanning apparatus and image forming apparatus
RICOH KK97 citations98
US7006120B2Feb 28, 2006
Multi-beam optical scanning apparatus and image forming apparatus
RICOH KK65 citations98
US6987593B2Jan 17, 2006
Optical scanning device and image forming apparatus using the same
RICOH KK64 citations98
US6771407B2Aug 3, 2004
Optical scanner and image formation apparatus
RICOH KK82 citations98
US6657765B2Dec 2, 2003
Optical deflecting unit, optical scanning unit, image forming apparatus, and method of producing optical unit
RICOH KK113 citations98
US6462853B2Oct 8, 2002
Optical scanning device
RICOH KK97 citations98
US6198562B1Mar 6, 2001
Multi-beam scanning device and image forming system and method using the same
RICOH KK105 citations98
US6185026B1Feb 6, 2001
Multi-beam scanning apparatus
RICOH KK111 citations98
US6104522AAug 15, 2000
Optical scanning apparatus with controlled sag and ghost
RICOH KK102 citations98
US6069724AMay 30, 2000
Optical scanning lens and optical scanning apparatus
RICOH KK120 citations98
US5875051AFeb 23, 1999
Optical scanning device and a scanning lens therefor
RICOH KK118 citations98
US7271823B2Sep 18, 2007
Optical scanner and image forming apparatus
RICOH KK61 citations97
US7106483B2Sep 12, 2006
Optical scanner and image forming apparatus
RICOH KK71 citations97
US7068296B2Jun 27, 2006
Optical scanning device for reducing a dot position displacement at a joint of scanning lines
RICOH KK80 citations97
US7145705B2Dec 5, 2006
Optical scanner and image forming apparatus
RICOH KK57 citations96
US6906739B2Jun 14, 2005
Optical scanner and imaging apparatus using the same
RICOH KK65 citations96
US6757089B2Jun 29, 2004
Optical scanning device having a deflection mirror to scan a scanned surface at a constant velocity via a light beam to obtain a large effective write width
RICOH KK57 citations96
US6744545B2Jun 1, 2004
Optical scanning lens, optical scanning device and image forming apparatus
RICOH KK37 citations96
US6587245B2Jul 1, 2003
Optical scanning device, optical scanning method, and image forming apparatus
RICOH KK59 citations96
US6369927B2Apr 9, 2002
Optical scanning apparatus
RICOH KK42 citations96
US6317246B1Nov 13, 2001
Multi-beam scanning apparatus
RICOH KK68 citations96
US6229638B1May 8, 2001
Optical scanning apparatus capable of reducing variations in shading and improving light usage
RICOH KK54 citations96
US6222662B1Apr 24, 2001
Optical scanning device and a scanning lens therefor
RICOH KK81 citations96
US6141133AOct 31, 2000
Optical scanning device and a scanning lens therefor
RICOH KK68 citations96
US5986791ANov 16, 1999
Optical scanning device and a scanning lens therefor
RICOH KK82 citations96
US5652670AJul 29, 1997
Scanning image forming lens and optical scanner
RICOH KK60 citations96
US5581392ADec 3, 1996
Optical Scanner
RICOH KK58 citations96
US5557448ASep 17, 1996
Optical scanner
RICOH KK62 citations96
US7164516B2Jan 16, 2007
Optical scanner and image forming apparatus
RICOH KK44 citations95
US6788444B2Sep 7, 2004
Method and apparatus for optical scanning capable of reducing a dot position displacement and a dot diameter variation
RICOH KK69 citations94
US7672032B2Mar 2, 2010
Optical scanner and image forming apparatus using optical scanner
RICOH KK27 citations93
US7545547B2Jun 9, 2009
Scanning unit and image forming apparatus
RICOH KK37 citations93
US7471434B2Dec 30, 2008
Optical scanning device and image forming apparatus
RICOH KK18 citations93
US7443558B2Oct 28, 2008
Optical scanning device and image forming apparatus
RICOH KK29 citations93
US7417777B2Aug 26, 2008
Optical scanning device and image forming apparatus
RICOH KK42 citations93
US7397591B2Jul 8, 2008
Optical scanner and image forming apparatus
RICOH KK21 citations93
US7362486B2Apr 22, 2008
Optical scanning device with at least one resin lens for controlling a beam waist position shift
RICOH KK28 citations93
US7298537B2Nov 20, 2007
Optical scanner and image forming apparatus
RICOH KK20 citations93
US7236281B2Jun 26, 2007
Optical scanner and image forming apparatus
RICOH KK52 citations93
US7233425B2Jun 19, 2007
Multi-beam scanner, multi-beam scanning method, synchronizing beam detecting method and image forming apparatus
RICOH KK16 citations93
US7154651B2Dec 26, 2006
Optical scanning device and imaging apparatus implementing the same
RICOH KK40 citations93
US7110016B2Sep 19, 2006
Optical scanner and imaging apparatus using the same
RICOH KK20 citations93
US6977762B2Dec 20, 2005
Optical scanning device decreasing amount of change in relative scanning position
RICOH KK20 citations93
US6956685B2Oct 18, 2005
Multi-beam scanner, multi-beam scanning method, synchronizing beam detecting method and image forming apparatus
RICOH KK25 citations93
YAMAHA CORP
1 patentSHARP KK
1 patentShowing the top 50 of 209 patents by PatentIndex Score.