Inventor
HAYAKAWA YASUYOSHI
JP44 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA YASUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
43 patentsUS6733007B2May 11, 2004
Sheet material conveying device; image forming apparatus and sheet processing device
CANON KK87 citations98
US6581922B2Jun 24, 2003
Sheet processing apparatus above image forming means and image forming apparatus
CANON KK100 citations98
US6561503B1May 13, 2003
Sheet processing device with stack alignment
CANON KK82 citations98
US6722646B2Apr 20, 2004
Sheet treating apparatus and image forming apparatus
CANON KK121 citations97
US6382614B1May 7, 2002
Sheet processing apparatus and image forming apparatus
CANON KK56 citations96
US6382616B1May 7, 2002
Aligning device for sheet finisher
CANON KK68 citations96
US6325371B1Dec 4, 2001
Sheet conveying apparatus with conveying path changing device and sorter
CANON KK58 citations96
US6318718B1Nov 20, 2001
Image forming apparatus and sheet stacking device with lifter
CANON KK57 citations96
US6302606B1Oct 16, 2001
Sheet receiving/stacking device, and image forming apparatus having the same
CANON KK54 citations96
US5579098ANov 26, 1996
Image forming apparatus with removeable fixing unit
CANON KK60 citations96
US4873548AOct 10, 1989
Image forming apparatus comprising a main assembly having a top frame adapted to swing open and closed with respect to a bottom frame and having process cartridge detachably mounted in the main assembly
CANON KK68 citations96
US5292116AMar 8, 1994
Sheet feeding apparatus
CANON KK52 citations95
US5383655AJan 24, 1995
Sheet feeding apparatus
CANON KK27 citations93
US5155537AOct 13, 1992
Sheet feeding apparatus with a plurality of easily loaded cassettes
CANON KK53 citations93
US7226050B2Jun 5, 2007
Discharge sheet stacking apparatus and image forming apparatus provided with the same
CANON KK16 citations92
US6973285B2Dec 6, 2005
Discharge sheet stacking apparatus and image forming apparatus provided with the same
CANON KK29 citations92
US6942206B2Sep 13, 2005
Sheet treating apparatus and image forming apparatus having the same
CANON KK43 citations92
US6735415B2May 11, 2004
Sheet postprocessing apparatus and image forming apparatus
CANON KK29 citations92
US6674976B2Jan 6, 2004
Sheet post-processing device, image forming apparatus having the device and error handling method therefor
CANON KK32 citations92
US6661995B2Dec 9, 2003
Sheet processing apparatus and image forming apparatus provided with the same
CANON KK28 citations92
US6637996B1Oct 28, 2003
Bookbinding apparatus, adhesive cartridge, and image forming apparatus
CANON KK20 citations92
US6352253B1Mar 5, 2002
Discharged sheet stacking apparatus and image forming apparatus having such stacking apparatus
CANON KK34 citations92
US6341772B1Jan 29, 2002
In line rotatable stapling device
CANON KK39 citations92
US6206369B1Mar 27, 2001
Sorter
CANON KK19 citations91
US4888620ADec 19, 1989
Process cartridge and image forming apparatus using the same
CANON KK48 citations91
US5348284ASep 20, 1994
Sheet supply apparatus
CANON KK20 citations89
US6733008B2May 11, 2004
Sheet conveying apparatus, and image forming apparatus and image reading apparatus having the sheet conveying apparatus
CANON KK15 citations84
US7913996B2Mar 29, 2011
Sheet feeding apparatus and image forming apparatus
CANON KK13 citations83
US7448619B2Nov 11, 2008
Image processing apparatus
CANON KK6 citations74
US7341248B2Mar 11, 2008
Sheet processing apparatus and image forming apparatus
CANON KK6 citations74
US7267338B2Sep 11, 2007
Image processing apparatus
CANON KK8 citations74
US7022972B2Apr 4, 2006
Image reader with a closed-state detector and image forming apparatus using same
CANON KK8 citations74
US6930805B2Aug 16, 2005
Image reading apparatus
CANON KK10 citations74
US6534761B2Mar 18, 2003
Image reader with a closed-state detector and image forming apparatus using same
CANON KK11 citations74
US6286830B1Sep 11, 2001
Sheet material stacking device and image forming apparatus having same
CANON KK7 citations74
US5465141ANov 7, 1995
Fixing apparatus for changing the duty cycle of electric current supply
CANON KK18 citations74
US7216863B2May 15, 2007
Sheet processing apparatus above image forming means and image forming apparatus
CANON KK3 citations63
US6917451B2Jul 12, 2005
Image reading apparatus
CANON KK5 citations63
US5603618AFeb 18, 1997
Mounting board unit attaching/detaching device
CANON KK5 citations63
US7077395B2Jul 18, 2006
Sheet after-treatment device and image forming apparatus equipped with the device
CANON KK6 citations62
US7630681B2Dec 8, 2009
Sheet processing apparatus and image forming apparatus
CANON KK1 citations52
US7607651B2Oct 27, 2009
Sheet processing apparatus and image forming apparatus
CANON KK1 citations52
US7386271B2Jun 10, 2008
Sheet processing apparatus and image forming apparatus
CANON KK1 citations52