EP 1038675 A2 20000927 - Ink jet recording head and method for manufacture the same
Title (en)
Ink jet recording head and method for manufacture the same
Title (de)
Tintenstrahlaufzeichnungskopf und Verfahren zur Herstellung
Title (fr)
Tête d'impression à jet d'encre et son procédé de fabrication
Publication
Application
Priority
JP 8406299 A 19990326
Abstract (en)
An ink jet recording head (55) may improve the packing efficiency of the ink into the pressure generating chamber (19), and improve the ejection efficiency of the ink through the ink ejection nozzle (41) to realize a high quality gradation expression in printing operations. The recording head (55) comprises: a pressure generating chamber (19) communicating with an ink reservoir (40); a vibrating plate (23) which faces the pressure generating chamber (19) and is provided with an island-like convex portion (18); and, a piezoelectric element (20) arranged so as to be brought into contact with the island-like convex portion (18) of the vibrating plate (23) to vibrate the plate (23), and thereby forcing ink droplets to be ejected from the nozzle (41). The vibrating plate (23) comprises: a first metallic layer or stainless steel member (11) brought into contact with the piezoelectric element (20), a second metallic layer or thin nickel film(15) exposed to the pressure generating chamber (19), and a polymer film (13) of a high polymeric organic compound interposed between the first metallic layer (11) and the second metallic layer (15). The island-like convex portion (18) of the vibrating plate (23) is formed by etching a surface of the first metallic layer (11). <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/14 (2006.01); B41J 2/16 (2006.01)
CPC (source: EP)
B41J 2/14274 (2013.01); B41J 2/1612 (2013.01); B41J 2/1623 (2013.01); B41J 2/1626 (2013.01); B41J 2/1631 (2013.01); B41J 2/1642 (2013.01); B41J 2/1646 (2013.01); B41J 2202/03 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 1038675 A2 20000927; EP 1038675 A3 20010404; JP 2000272129 A 20001003; JP 3339569 B2 20021028
DOCDB simple family (application)
EP 00106532 A 20000327; JP 8406299 A 19990326