Highly integrated ink jet head
AssigneesKabushiki Kaisha Suwa Seikosha, Shinshu Seiki Kabushiki Kaisha
InventorsHaruhiko Koto, Junichi Okada
Life of this patent
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Abstract
A head for an ink-on-demand jet dot printer is highly integrated to provide a large plurality of closely spaced dots by combining more than one head of lesser dot density as components of a single unit. The dots from the separate component heads are interspaced on the print recording medium to provide characters of high quality. Commonality of elements provides for a miniaturized head. In another embodiment independent pressure chambers, channels and nozzles are formed on opposite sides of a common baseplate.
Claims10
A highly integrated ink jet head for printing on a print recording medium, comprising:
- a baseplate;
- a pair of vibration plates, each vibration plate abutting and attached to one of opposite sides of said baseplate;
- pressure chambers for containing ink between each said vibration plate and said baseplate;
- a supply channel for containing ink connected to each said pressure chamber;
- a plurality of piezoelectric elements attached to each said vibration plate, each said piezoelectric element being in registry with one of said pressure chambers;
- a plurality of nozzles, each said nozzle connected with one of said pressure chambers;
- said opposed baseplate sides converging toward said nozzles and forming a narrowed end, said vibration plates extending on both sides beyond said narrowed end and abutting one to the other, said nozzles being formed between said abutting vibration plates, ink being ejected from associated nozzles when said piezoelectric elements are energized to deflect said vibration plates.
Dependencies are inferred from the claim text.