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US 6,660,213 B1Granted
Nozzle plate manufacturing method
AssigneeFujitsu Limited
InventorsKouichi Sanpei, Masayuki Sasaki, Hiromitsu Soneda, Mutsuo Watanabe
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Abstract
A nozzle plate to be mounted on an ink jet print head includes a plate body on which is formed a plurality of jet aperture portions from which ink is jetted and a water-repellant film formed on this plate body. The diameter of jet aperture portions formed on the plate body and the diameter of water-repellant film apertures formed on the water-repellant film so as to connect with the nozzle apertures are the same diameter R3, so the ink jet flow can be accurately controlled.
Claims3
A manufacturing method for a nozzle plate to be mounted on an ink jet print head, comprising the steps of:
- providing a plate body on which a plurality of nozzle apertures are formed, each of said nozzle apertures having a jet aperture portion from which ink is jetted;
- forming a resinous water-repellant film only on the side of said body through which said jet aperture portion of said nozzle apertures extend;
- applying a water jet to said nozzle apertures from a water jet device positioned on the side of said plate body opposite said side of said body containing said water-repellant film to form in said water-repellant film a plurality of water-repellant film apertures, each of said water-repellant film apertures having a diameter identical to that of said jet aperture portions such that stable ink jetting is achieved, by using said plate body to mask an area surrounding said nozzle apertures;
- and
- removing water-repellant film entering and remaining inside said jet aperture portion of said nozzle apertures during the film forming step.
2 more elements
Dependencies are inferred from the claim text.