Method for making visible defects in surfaces Patent #: 3995483
ApplicationNo. 06/296093 filed on 08/26/1981
US Classes:228/121, Bonding nonmetals with metallic filler228/124.1, With treating228/226, Diverse fillers228/254, Adherent solid layer or coating (e.g., pretinned)73/104SURFACE AND CUTTING EDGE TESTING
ExaminersPrimary: Ramsey, Kenneth J.
Attorney, Agent or Firm
International ClassesB41J 2/015 (20060101)
B41J 2/025 (20060101)
AbstractAn ink jet tip assembly in which the individual jets are comprised of a piezoelectric cylinder having a longitudinally through bore, a glass ink nozzle disposed in the cylinder bore and a low melting temperature alloy interposed between the bore and the nozzle for anchoring the nozzle to the piezoelectric cylinder. The method of assembly for the individual jet tip assemblies comprises inserting the glass ink nozzle into the cylinder bore which contains the anchoring alloy in a molten form. A method of checking for flaws in the cylinder comprises fluxing the cylinder bore for allowing flux to pass through any cylinder pinholes or cracks. Upon introducing solder for coating the interior cylinder wall, some solder will appear as shining spots or areas on the cylinder exterior wall.