Nozzle plate for an ink jet print head comprising stress...

Details Nozzle plate for an ink jet print head comprising stress... Nozzle plate for an ink jet print head comprising stress...

2011-03-29

2011-03-29

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07914127

ABSTRACT:
The invention relates to an ink jet print head structure for printing devices, comprising a substrate in which one or more slots are realized and a nozzle plate connected to the substrate. The nozzle plate defines a first axis (X) and a second perpendicular axis (Y) and comprises a plurality of nozzles from which ink is ejected in fluid communication with the slots. The slots extends along the second axis (Y). A plurality of strip-like stress relief elements is realized on the nozzle plate, the plurality of stress relief elements is disposed so to extend along the Y axis, and each stress relief element of the plurality defines an aperture on a free surface of said nozzle plate. In addition, the total X projections of all apertures defined by the plurality of stress relief elements along the first (X) axis has a resulting length comprised between 10% and 55% of the overall width of the nozzle plate along the same first axis (X).

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