Ink jet recording head and ink jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorHideyuki Sugioka
Life of this patent
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Abstract
An ink jet recording head comprises heating means for generating a heat energy to be utilized for discharging an ink, and a nonlinear element for driving the heating means, having MIM type current/voltage characteristics in which a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage, wherein the nonlinear element has an electric field relaxing structure for relaxing generation of a locally strong electric field.
Claims17
An ink jet recording head comprising:
- a nonlinear element capable of passing a current for generating heat energy in a heating portion to be utilized for discharging ink, said nonlinear element having MIM type current/voltage characteristics such that a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage,
- wherein said nonlinear element has an electric field relaxing structure for relaxing generation of a locally strong electric field.
An ink jet recording head comprising:
- a nonlinear element capable of passing a current for generating heat energy in a heating portion to be utilized for discharging ink, said nonlinear element having MIM type current/voltage characteristics such that a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage,
- wherein said nonlinear element comprises portions of a pair of electrodes disposed opposite to each other, and an interval between outer peripheries of said portions is larger than an interval between any other parts of said portions.
An ink jet recording head comprising:
- a nonlinear element capable of passing a current for generating heat energy to be utilized for discharging ink, said nonlinear element having MIM type current/voltage characteristics such that a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage,
- wherein said nonlinear element has an electric field relaxing structure for relaxing generation of a locally strong electric field.
An ink jet recording head comprising:
- a nonlinear element capable of passing a current for generating heat energy to be utilized for discharging ink, said nonlinear element having MIM type current/voltage characteristics such that a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage,
- wherein said nonlinear element comprises portions of a pair of electrodes disposed opposite to each other, and an interval between outer peripheries of said portions is larger than an interval between any other parts of said portions.
Dependencies are inferred from the claim text.