Compact inkjet substrate with centrally located circuitry and ed

Details Compact inkjet substrate with centrally located circuitry and ed Compact inkjet substrate with centrally located circuitry and ed

1994-10-06

1997-07-15

Royer, William J.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 50, B41J 214

Patent

active

056488041

ABSTRACT:
An inkjet printhead includes a compact substrate having a pair of elongated edge portions for ink channel architecture, a central interior for substrate circuitry, and a pair of truncated end portions for mounting and for electrical interconnects. The ink channel architecture includes a plurality of ink vaporization chambers each having a firing resistor therein, as well as ink feed channels communicating through an ink passage from an underside of the substrate around both edges of the substrate to the vaporization chambers. The central interior portion excludes any ink channel architecture thereby enhancing the structural stability

REFERENCES:
patent: 4683481 (1987-07-01), Johnson
patent: 4734717 (1988-03-01), Rayfield
patent: 4791440 (1988-12-01), Eldridge et al.
patent: 4942408 (1990-07-01), Braun
patent: 4999650 (1991-03-01), Braun
patent: 5198834 (1993-03-01), Childers et al.

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