| 摘要 |
An orifice plate for a thermal ink jet print head has a plurality of orifice apertures, with a major surface occupying a first plane. The plate has a surrounding region surrounding each of the orifices, and the surrounding region has an offset portion with an offset surface offset from the first plane. The offset portion may be above or below the first plane, and may include concentric inner and outer regions, with the outer region above the first plane, and the inner region recessed below the outer region.
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