Inventor
IWASAKI KYUHACHIRO
36 patents
⚠️ This page may combine multiple inventors who share the name “IWASAKI KYUHACHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
34 patentsUS6039425AMar 21, 2000
Ink jet recording method and head
RICOH KK89 citations99
US5610637AMar 11, 1997
Ink jet recording method
RICOH KK142 citations99
US4990939AFeb 5, 1991
Bubble jet printer head with improved operational speed
RICOH KK179 citations99
US5877786AMar 2, 1999
Ink jet recording method and head
RICOH KK85 citations97
US5729257AMar 17, 1998
Ink jet recording head with improved ink jetting
RICOH KK66 citations97
US5657060AAug 12, 1997
Ink jet recording head having means for controlling ink droplets
RICOH KK83 citations97
US6568778B1May 27, 2003
Liquid jet recording apparatus and method
RICOH KK40 citations96
US6227639B1May 8, 2001
Ink jet recording method and head
RICOH KK49 citations96
US6193348B1Feb 27, 2001
On demand type ink jet recording apparatus and method
RICOH KK52 citations96
US4673955AJun 16, 1987
Ink receptacle for ink jet printer
RICOH KK87 citations96
US4293865AOct 6, 1981
Ink-jet recording apparatus
RICOH KK102 citations96
US4228440AOct 14, 1980
Ink jet printing apparatus
RICOH KK59 citations96
US4178595ADec 11, 1979
Ink jet printing apparatus with ink replenishing
RICOH KK75 citations96
US4045802AAug 30, 1977
Ink ejection printing apparatus comprising automatically actuated ejection orifice cap
RICOH KK129 citations96
US4588998AMay 13, 1986
Ink jet head having curved ink
RICOH KK62 citations95
US4231047AOct 28, 1980
Ink-jet printing method and device therefor
RICOH KK36 citations93
US4800398AJan 24, 1989
Ink-jet printer with an encased printer head unit
RICOH KK40 citations92
US4700203AOct 13, 1987
Ink jet head for compressing ink to eject drops of ink
RICOH KK33 citations92
US4527170AJul 2, 1985
Ink jet waste and replenish ink system
RICOH KK30 citations92
US4520367AMay 28, 1985
Ink jet head assembly
RICOH KK27 citations92
US6789866B2Sep 14, 2004
Liquid jet recording apparatus, head and method
RICOH KK12 citations82
US4364060ADec 14, 1982
Nozzle position deviation compensation arrangement for ink jet printing device
RICOH KK26 citations82
US4312005AJan 19, 1982
Ink jet printing apparatus
RICOH KK20 citations82
US6991309B2Jan 31, 2006
Ink jet recording method and head
RICOH KK6 citations74
US4393385AJul 12, 1983
Controllable ink drop velocity type ink-jet printer
RICOH KK9 citations74
US4365255ADec 21, 1982
Ink jet printer
RICOH KK10 citations74
US4313123AJan 26, 1982
Controllable ink drop velocity type ink-jet printer
RICOH KK13 citations74
US4290073ASep 15, 1981
Ink-jet recording apparatus
RICOH KK7 citations74
US4288797ASep 8, 1981
Variable-charge type ink-jet printer
RICOH KK14 citations74
US4217595AAug 12, 1980
Charging phase control device for ink jet recording device
RICOH KK19 citations74
US4045801AAug 30, 1977
Ink ejection head for printer
RICOH KK13 citations74
US4437101AMar 13, 1984
Ink jet printing apparatus
RICOH KK14 citations73
US7533950B2May 19, 2009
Liquid jet recording apparatus
RICOH KK0 citations52
US7347518B2Mar 25, 2008
Ink jet recording head configured for ejecting small ink droplets to form high quality images
RICOH KK0 citations52