Ink-jet head and method of fabricating same

a method of bonding a head unit to a frame, comprising:

• providing at least one head unit having a plurality of positioning holes, each of the at least one head unit having a first surface and a second surface opposite with the first surface;
• providing a bottom plate at the frame, the bottom plate having a third surface and a fourth surface opposite with the third surface, the bottom plate being formed with a plurality of recesses each of which penetrates the bottom plate;
• providing a jig having a plurality of positioning pins;
• providing a cover plate having a plurality of openings;
• disposing the cover plate on the jig;
• disposing the at least one head unit on the jig in a manner that each of the plurality of positioning pins is inserted into a corresponding one of the plurality of positioning holes and that the first surface of each of the at least one head unit exposes through a corresponding one of the plurality of openings;
• disposing the frame onto the jig in a manner that the third surface of the bottom plate faces the second surface of the at least one head unit and the second surface exposes through the plurality of recesses;
• and
• applying an adhesive between the second surface of the at least one head unit and the third surface of the bottom plate through the plurality of recesses without applying pressure.

A method of manufacturing an ink-jet printer head, comprising:

• providing at least one head unit, each of which includes a first surface where at least one nozzle is provided, a second surface opposite with the first surface, and at least one ink supply hole communicating with the at least one nozzle;
• providing a frame including a bottom plate and at least one ink supply passage, the bottom plate including a third surface facing to the second surface of the at least one head unit and a fourth surface opposite with the third surface, the bottom plate having a plurality of apertures that penetrate the bottom plate, each of the at least one ink supply passage communicating with each of the at least one ink supply hole of the at least one head unit;
• and
• applying an adhesive between the second surface of the at least one head unit and the third surface of the bottom plate through the plurality of apertures, each of the plurality of apertures facing a peripheral portion of the at least one head unit such that the peripheral portion of the at least one head unit is exposed through the plurality of apertures.

A method for bonding a head unit to a frame, comprising:

• providing a plurality of head units, each having a first surface, a second surface opposite with the first surface, and a nozzle plate formed at the first surface having a plurality of nozzles;
• providing the frame having a third surface;
• disposing the plurality of head units in a manner that the nozzle plate of each of the plurality of head units is positioned in a common plane side by side;
• disposing the frame in a manner that the third surface of the frame faces to the second surface of each of the plurality of head units;
• and
• applying an adhesive between the third surface of the frame and the second surface of each of the plurality of head units such that the plurality of head units are fixed side by side with the nozzle plate of each of the plurality of head units positioned in the common plane, wherein the frame includes a bottom plate having the third surface facing to the second surface of each of the plurality of head units and a fourth surface opposite with the third surface, the bottom plate having a plurality of apertures that penetrate the bottom plate such that the second surface of each of the plurality of head units is exposed through the plurality of apertures.