EP 0094032 B1 19850911 - DEVICE FOR THE EJECTION OF INK DROPLETS
Title (en)
DEVICE FOR THE EJECTION OF INK DROPLETS
Publication
Application
Priority
DE 3217248 A 19820507
Abstract (en)
[origin: US4716418A] Apparatus for the ejection of ink droplets having a fluid filled channel having a discharge opening at one end, and a cross-sectional expansion at the other, so that pressure waves within the channel produce by a tubular transducer are reflected from the cross-sectional expansion with reversal of operational sign or polarity. Unipolar pulses having symmetrically and trailing edges excite the transducer, and the droplet is ejected from the discharge opening as a result of the superimposed directed and reflected pressure waves produced by the transducer.
IPC 1-7
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/055 (2006.01)
CPC (source: EP US)
B41J 2/04581 (2013.01 - EP US); B41J 2/04588 (2013.01 - EP US)
Designated contracting state (EPC)
BE FR GB IT NL
DOCDB simple family (publication)
EP 0094032 A1 19831116; EP 0094032 B1 19850911; DE 3217248 A1 19831110; DE 3217248 C2 19860102; JP H0252626 B2 19901114; JP S58203064 A 19831126; US 4716418 A 19871229
DOCDB simple family (application)
EP 83104401 A 19830504; DE 3217248 A 19820507; JP 7768883 A 19830504; US 67320784 A 19841119