Printhead nozzle cell having photoresist chamber

Details Printhead nozzle cell having photoresist chamber Printhead nozzle cell having photoresist chamber

2011-07-26

2011-07-26

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S054000

Reexamination Certificate

active

07984975

ABSTRACT:
A nozzle cell of a printhead is provided which has a multi-layer substrate defining a fluid inlet, side walls extending from the substrate around the fluid inlet and comprising walls of silicon nitride encapsulating hardened photoresist, an apertured roof supported by the side walls to define a chamber, and a heater within the chamber, the heater heating the fluid in the chamber so that bubbles are generated therein to cause ejection of the fluid from a nozzle defined with the apertured roof.

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patent: 0882593 (1998-12-01), None

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