Thermal head
AssigneeCanon Kabushiki Kaisha
InventorsAkira Shinmi, Masahisa Fukui, Toshitami Hara, Yoshiaki Shirato, Yoshioki Hajimoto
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Abstract
A thermal head of the present invention is composed of a substrate, a resistive heater element formed on the substrate, and electrically conductive members to supply electric power to the resistive heater element, wherein the resistive heater element contains a metal boride as the principal constituent. The thermal head of this construction is capable of selecting its resistivity to a high value and causing a large electric current to flow in the form of short pulses for the purpose of high speed printing, hence it is stable against repetitive pulse applications over a long period of time.
Claims36
A thermal head comprising means for producing a pattern on a recording medium in accordance with information to be recorded, said means including a substrate, a thin film resistive heater element overlying the substrate, and electrically conductive members overlying the resistive heater element for supplying the resistive heater element with electric power, wherein the resistive heater element comprises a metal boride.
A thermal head comprising means for producing a pattern on a recording medium in accordance with information to be recorded, said means including a substrate, a thin film resistive heater element overlying the substrate, and electrically conductive members overlying the resistive heater element for supplying the resistive heater element with electric power, wherein the resistive heater element comprises a metal boride and a metal other than that constituting the metal boride.
A thermal head comprising a substrate, a thin film resistive heater element overlying the substrate, and electrically conductive members overlying the resistive heater element for supplying the resistive heater element with electric power, wherein the resistive heater element comprises a metal boride, and a semiconductor selected from the group consisting of Si and Ge.
Dependencies are inferred from the claim text.