Method of forming fine bore
AssigneeRicoh Company, Ltd.
InventorsKunio Ikeda, Hirosi Haga
Life of this patent
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Abstract
A method of forming a fine bore having the steps of effecting electro-forming on a core wire to form an electro-cast rod, slicing the electro-cast rod by forming chips each having the core wire and removing the core wire to thereby form in each chip a fine bore of a diameter coinciding with the diameter of the core wire and having a high circularity and cylindricalness. Since the fine bore is constituted by an electro-formed layer, the bore exhibits high wear resistance and, hence, a high durability when used as nozzle bore of an ink jet plotter.
Claims10
A method of forming a fine bore ink head comprising the steps of:
- effecting electro-forming on a core wire having the same diameter as that of a fine bore to be formed to form an electro-formed layer around said core wire to thereby make an electro-formed rod having said core wire at its center;
- slicing said electroformed rod to form a plurality of disc-shaped chips containing said core wire;
- and
- removing said core wire by dissolution or heating to thereby form in said chips a fine bore of the same diameter as said core wire and to form said ink head.
A method of forming fine bore of a multi-nozzle ink head comprising the steps of:
- effecting electro-forming on a core wire having the same diameter as that of fine bores to be formed to form an electro-formed layer around said core wire to thereby make an electro-formed rod having said core wire at its center;
- slicing said electro-formed rod to form a plurality of chips containing said core wire;
- forming a fine bore of the same diameter as said core wire in each chip by removing said core wire by dissolution or heating;
- and
- fixing said chips to a substrate to form said multi-nozzle ink head.
A method of forming fine bores of a multi-nozzle ink head comprising:
- effecting electro-forming on a core wire having the same diameter as that of fine bores to be formed so as to form an electroformed layer around said core wire to thereby make an electro-formed rod having said core wire at its center;
- slicing said electro-formed rod to form a plurality of chips containing said core wire;
- fixing said chips to a substrate;
- and
- removing said core wire of each chip by dissolution or heating thereby to form a plurality of fine bores of said multi-nozzle head and to form said multi-nozzle ink head.
Dependencies are inferred from the claim text.