Patent ID: 6443562
Filing Date: 2002-09-03
Classification: B41J

Abstract:
A method for manufacturing a driving module of an ink jet apparatus, said method comprising the steps of:(1) forming a working fluid chamber by etching a wafer; (2) after the working fluid chamber is formed, vapor-depositing a lower electrode in the working fluid chamber; (3) after the lower electrode is deposited, attaching a polyamide sheet to the wafer; (4) after the polyamide sheet is attached to the wafer, forming a membrane having a thickness of several micrometers when completed, by etching the polyamide sheet; and (5) after the membrane is formed, vapor-depositing an upper electrode on the membrane, thereby completing fabrication of an ink jet apparatus driving module without a need for separate process steps for fabricating a separate membrane or for attaching the separate membrane to a partially completed driving module or for doping any area of the wafer corresponding to the membrane.