Invention Grant
US08109614B2 Process for protectively coating hydraulic microcircuits against aggressive liquids, particulary for an ink jet printhead 有权
用于保护性地将液压微电路防止侵蚀性液体的方法,特别是喷墨打印头

  • Patent Title: Process for protectively coating hydraulic microcircuits against aggressive liquids, particulary for an ink jet printhead
  • Patent Title (中): 用于保护性地将液压微电路防止侵蚀性液体的方法,特别是喷墨打印头
  • Application No.: US12003157
    Application Date: 2007-12-20
  • Publication No.: US08109614B2
    Publication Date: 2012-02-07
  • Inventor: Lucia GiovanolaRenato Conta
  • Applicant: Lucia GiovanolaRenato Conta
  • Applicant Address: IT Milan
  • Assignee: Telecom Italia S.p.A.
  • Current Assignee: Telecom Italia S.p.A.
  • Current Assignee Address: IT Milan
  • Agency: Venable LLP
  • Agent Robert Kinberg; Steven J. Schwarz
  • Priority: ITTO2002A1099 20021219
  • Main IPC: B41J2/05
  • IPC: B41J2/05
Process for protectively coating hydraulic microcircuits against aggressive liquids, particulary for an ink jet printhead
Abstract:
An ink jet printhead, made of a silicon substrate and a plurality of metallic and dielectric layers deposited on said substrate. A plurality of chambers for ejection of ink droplets and a plurality of corresponding feeding ducts, connected to the chambers, are produced in a structural layer made of non-photosensitive epoxy or polyamide resin. The chambers and said ducts are delimited by at least one upper wall, the upper wall communicating with at least one nozzle for ejection of the ink droplets. The upper wall and an inner wall of the nozzle are coated with at least one metallic coating layer, suitable for increasing the resistance of the walls to chemically aggressive liquids, in contact with the walls.
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