EP 1078748 A2 20010228 - Circuit for driving liquid drop spraying apparatus
Title (en)
Circuit for driving liquid drop spraying apparatus
Title (de)
Schaltung zum Betrieb eines Flüssigkeitstropfensprühgerätes
Title (fr)
Circuit de commande d'un appareil à éjection de gouttes de liquide
Publication
Application
Priority
- JP 23444599 A 19990820
- JP 2000229485 A 20000728
Abstract (en)
In a circuit for driving a liquid drop spraying or ejecting apparatus, a coil (L1) is provided in series with a resistor (R1) that determines charge characteristics of a charge circuit (12) of a piezoelectric/electrostrictive element (1), thereby making gentle start characteristics when a charge voltage rises. In addition, discharge circuits are provided at two stages. A constant of the second discharging circuit (13b) is set to be smaller than a constant of the first discharging circuit (13a). Coils (L2) and (L3) are provided in series at resistors (R2) and (R3) that determine their discharge characteristics. In this manner, even in the case where a large amount of liquid is sprayed, the driving circuit is capable of smoothly supplying liquid to a pressurizing chamber. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/14 (2006.01)
CPC (source: EP)
B41J 2/0452 (2013.01); B41J 2/04541 (2013.01); B41J 2/04543 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); B41J 2/14233 (2013.01); B41J 2/14274 (2013.01); B41J 2202/11 (2013.01)
Citation (applicant)
- JP H10107335 A 19980424 - DENSO CORP
- JP H08300646 A 19961119 - SEIKO EPSON CORP
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1078748 A2 20010228; EP 1078748 A3 20010516; JP 2001129989 A 20010515; JP 3539365 B2 20040707
DOCDB simple family (application)
EP 00307095 A 20000818; JP 2000229485 A 20000728