EP 0648606 A2 19950419 - Drop-on dermand ink-jet head apparatus and method.
Title (en)
Drop-on dermand ink-jet head apparatus and method.
Title (de)
Auf Abruf arbeitender Tintenstrahlkopf und Verfahren.
Title (fr)
Tête à jet d'encre à la demande et méthode.
Publication
Application
Priority
US 13934993 A 19931019
Abstract (en)
An ink-jet apparatus (10) and method provides high-resolution, high-speed printing by providing a transducer drive waveform (160) having a spectral energy distribution (170) that concentrates energy (172) around a frequency associated with a dominant (Helmholtz) ink drop ejection mode and that suppresses energy (174) at resonant frequencies associated with ink inlet (18) and ink outlet structures (24, 26, 28, 14) of the ink-jet head. Spectral energy distribution principles used to shape the transducer drive waveform can be used to enhance the jetting performance of many conventional ink-jet heads. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/015 (2006.01); B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/175 (2006.01)
CPC (source: EP)
B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); B41J 2/04593 (2013.01); B41J 2002/14306 (2013.01); B41J 2002/14387 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0648606 A2 19950419; EP 0648606 A3 19950830; EP 0648606 B1 19980701; DE 69411347 D1 19980806; DE 69411347 T2 19990304; JP 3099653 B2 20001016; JP H07178926 A 19950718
DOCDB simple family (application)
EP 94307663 A 19941019; DE 69411347 T 19941019; JP 27826194 A 19941018