Global Patent Index - EP 0930166 A3

EP 0930166 A3 2000-04-12 - Manufacturing process and structure of ink jet printhead

Title (en)

Manufacturing process and structure of ink jet printhead

Title (de)

Herstellungsverfahren und Struktur eines Tintenstrahldruckkopfes

Title (fr)

Procédé de fabrication et structure d'une tête d'impression à jet d'encre

Publication

EP 0930166 A3 (EN)

Application

EP 98250372 A

Priority

  • CN 97121346 A
  • CN 97121341 A
  • CN 97121345 A

Abstract (en)

[origin: EP0930166A2] A manufacturing process and a structure for an ink jet printhead with high quality, yield rate, and performance are provided. The process includes steps of: a) providing a substrate, b) forming a dielectric layer over the substrate, c) forming a resistor over the dielectric layer, d) forming a conducting layer over a portion of the resistor, e) forming a passivation over a portion of the conducting layer and another portion of the resistor not covered by the conducting layer, f) forming a hole over the passivation for storing an ink, and g) forming a nozzle over the hole for ejecting therethrough the ink. <IMAGE>

IPC 1-7 (main, further and additional classification)

B41J 2/14; B41J 2/16

IPC 8 full level (invention and additional information)

B41J 2/14 (2006.01); B41J 2/16 (2006.01)

CPC (invention and additional information)

B41J 2/1646 (2013.01); B41J 2/14129 (2013.01); B41J 2/1603 (2013.01); B41J 2/1626 (2013.01); B41J 2/1631 (2013.01); B41J 2/1642 (2013.01); B41J 2202/03 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

EP 0930166 A2 19990721; EP 0930166 A3 20000412; EP 0930166 B1 20050223; CA 2250788 A1 19990421; CA 2250788 C 20030520