Compliant headland design for thermal ink-jet pen

Details Compliant headland design for thermal ink-jet pen Compliant headland design for thermal ink-jet pen

1997-06-23

1999-05-11

Le, N.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J2/175

Patent

active

059032952

ABSTRACT:
A method of attaching an ink-jet printhead assembly to the headland region of an ink-jet pen cartridge. The cartridge includes a frame structure fabricated of a rigid plastic frame member formed of a first plastic material and a polymeric second material molded to the frame member. A headland region is defined at the tip of a snout region of the cartridge. The second plastic material forms a compliant beam at the headland region. The printhead assembly includes a dielectric layer and a printhead die. The printhead assembly is attached to the headland region after alignment by attaching the dielectric layer of the assembly to the compliant beam formed by the second plastic material. As the pen is subjected to temperature extremes, and the first plastic material expands or shrinks more than the cover layer and flexible interconnection circuit materials, the compliant beam flexes, reducing stresses which can lead to pen failures.

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