Ink-jet recording head and ink-jet recording apparatus

Details Ink-jet recording head and ink-jet recording apparatus Ink-jet recording head and ink-jet recording apparatus

B - Operations, Transporting

41

J

B41J 2/05 (2006.01) B41J 2/14 (2006.01)

Patent

CA 2179974

An ink-jet recording head comprises an ink flow path having a discharge opening for discharging an ink, a lower layer for heat accumulation, a resistance layer provided on the lower layer, a pair of wiring electrodes provided on the resistance layer for applying an electric signal to the resistance layer, and an electrothermal transducer, provided corresponding to the ink flow path, employing the resistance layer between the wiring electrodes as a heat-generating portion, wherein the heat-generating portion has a high temperature section and a low temperature section when driven, and a boundary at which the thickness of the protective layer varies is positioned on the low temperature section.

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