Inventor
ISAYAMA TAKURO
JP20 patents
Patents
20 patentsUS4673955AJun 16, 1987
Ink receptacle for ink jet printer
RICOH KK87 citations96
US4591883AMay 27, 1986
Ink-jet printer head
RICOH KK65 citations96
US4586058AApr 29, 1986
Ink jet printing apparatus
RICOH KK57 citations96
US4301459ANov 17, 1981
Ink ejection apparatus comprising entrained air removal means
RICOH KK98 citations96
US4296418AOct 20, 1981
Ink jet printing apparatus with reverse solvent flushing means
RICOH KK108 citations96
US4045802AAug 30, 1977
Ink ejection printing apparatus comprising automatically actuated ejection orifice cap
RICOH KK129 citations96
US4034380AJul 5, 1977
Ink ejection apparatus for printer
RICOH KK67 citations96
US4518974AMay 21, 1985
Ink jet air removal system
RICOH KK42 citations92
US4245224AJan 13, 1981
Drive circuit for ink jet discharging head
RICOH KK34 citations92
US4183029AJan 8, 1980
Ink filter clogging sensor and indicator
RICOH KK45 citations92
US4050078ASep 20, 1977
Automatic nozzle cleaning system for ink ejection printer
RICOH KK42 citations90
US4293867AOct 6, 1981
Device for removing air bubbles formed and trapped in ink chamber of print head of ink-jet printer
RICOH KK28 citations82
US4222060ASep 9, 1980
Ink jet printing apparatus
RICOH KK26 citations82
US4178597ADec 11, 1979
Color ink jet printing apparatus
RICOH KK25 citations82
US4510509AApr 9, 1985
Ink ejection head
RICOH KK25 citations81
US4559544ADec 17, 1985
Multi-nozzle head for ink on-demand type ink jet printer
RICOH KK13 citations74
US4554556ANov 19, 1985
Color plotter
RICOH KK18 citations74
US4300144ANov 10, 1981
Multiple-nozzle ink-jet recording apparatus
RICOH KK19 citations74
US4184168AJan 15, 1980
Ink-on-demand type ink jet head driving circuit
RICOH KK18 citations74
US4271366AJun 2, 1981
Analog signal delay circuit
RICOH KK4 citations63