Ink jet printhead assembly having aligned dual internal channel

Details Ink jet printhead assembly having aligned dual internal channel Ink jet printhead assembly having aligned dual internal channel

1993-05-20

1995-05-16

Hall, Carl E.

Metal working

Piezoelectric device making

298901, H01L 4122

Patent

active

054149169

ABSTRACT:
A high density ink jet printhead is fabricated by first forming a body subassembly comprising a piezoelectric main block having metallic layers disposed on opposite first and second sides thereof, and piezoelectric sheets secured to front portions of the metallic layers. Using a precision dicing saw, a first spaced series of parallel grooves, longitudinally extending between the front and rear ends of the subassembly, are cut into the first side of the subassembly. The subassembly is then placed, groove side down, in a support fixture having mirrors secured thereto and positioned adjacent the opposite ends of the grooves. Reflections of opposite groove ends in the mirrors are then used as line-of-sight guides to position the saw which is then used to form a second series of grooves in the second subassembly side which are in precise lateral alignment with the first series of grooves. Covering blocks are then secured to the opposite piezoelectric sheets over the open outer sides of the grooves and form therewith interior ink receiving channels bounded along their lengths by piezoelectrically deflectable side wall segments of the printhead body. The rear ends of the channels are sealed off, ink supply conduits are communicated with rear end portions of the channels, and a plate member having first and second spaced series of ink discharge orifices respectively communicated with the front ends of the first and second series of interior channels is secured over the front end of the printhead body.

REFERENCES:
EP, A, O 484 983 -May 13, 1992.
Patent Abstracts of Japan vol. 16, No. 521 (E-1285)-Oct. 27, 1992.
Patent Abstracts of Japan vol. 16, No. 444 (E-1265)-Sep. 16, 1992.

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