Thermal ink jet printhead with cavitation gap

Details Thermal ink jet printhead with cavitation gap Thermal ink jet printhead with cavitation gap

2003-11-17

2008-12-16

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S062000

Reexamination Certificate

active

07465034

ABSTRACT:
An inkjet printhead which comprises a plurality of nozzles and one or more heater elements (53, 10) corresponding to each nozzle. Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble (12) therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. The bubble forming liquid (which may also be the ink) is collapsible, having a point of collapse (17) towards which it collapses, and each heater element is configured such that the point of collapse of a bubble formed by it is spaced (54) from that heater element.

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