Inventor
OBATA SHIGERU
JP21 patents
⚠️ This page may combine multiple inventors who share the name “OBATA SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6104907AAug 15, 2000
Image recording apparatus which prevents variation in speed of a recording medium and reduces shift values thereof
HITACHI LTD22 citations92
US5774777AJun 30, 1998
Continuous recording medium friction-conveying mechanism in image forming apparatus
HITACHI LTD36 citations92
US5499086AMar 12, 1996
Belt type transfer device for electrophotographic apparatus
HITACHI LTD24 citations92
US6285854B1Sep 4, 2001
Image recording apparatus
HITACHI LTD12 citations73
US6553206B2Apr 22, 2003
Image forming apparatus
HITACHI LTD8 citations72
US5157414AOct 20, 1992
Thick film type thermal head and thermal recording device
HITACHI LTD11 citations70
US4835550AMay 30, 1989
Thick film type thermal head
HITACHI LTD12 citations68
US6741830B2May 25, 2004
Image forming apparatus
HITACHI LTD5 citations61
RICOH PRINTING SYS LTD
6 patentsUS7298981B2Nov 20, 2007
Fixing device and image forming apparatus with guide having adjustable biasing angle
RICOH PRINTING SYS LTD23 citations92
US7167670B2Jan 23, 2007
Electro-photographic apparatus with a heating roller and pressurizing member
RICOH PRINTING SYS LTD14 citations83
US6928257B2Aug 9, 2005
Image forming and recording apparatus with three pressure members
RICOH PRINTING SYS LTD16 citations82
US7136615B2Nov 14, 2006
Heat fixing unit with improved belt handling
RICOH PRINTING SYS LTD12 citations80
US7406287B2Jul 29, 2008
Fixing device and image forming apparatus provided with fixing device
RICOH PRINTING SYS LTD8 citations71
US7433640B2Oct 7, 2008
Fixing apparatus and image forming apparatus including heating member
RICOH PRINTING SYS LTD2 citations62