Tdk Corporation

Atsushi Yoshida

Katsuto Nagano

Masato Susukida

Jun Hirabayashi

Jun Hagiwara

Yoshio Saita

An wear-resistant layer constituting a printing surface which is brought into contact with a thermal record medium is formed on a provisional substrate having a groove formed in its surface, said groove having a substantially semicircular cross section, and a heat generating layer electrically conductive layers and electrically connected to the heat generating layer, a protection layer and a heat storage layer are stacked in turn to form a printing section. Next, a driving IC for controlling a heating electric power to be supplied to the printing section is connected to the electrically conductive layer and a wiring section for connecting the driving IC to an external circuit is provided. Thereafter, the printing section is secured to a heat dissipating member by means of a resin and a common electrode and wires are secured to the heat dissipating member by means of both-sided adhesive tapes and After covering an assembly with an etching resist except for the substrate the substrate is removed by etching and the printing surface protruded outwardly is exposed.

Thermal head and method of manufacturing the same

A thermal head including a protection layer having mutually opposed first and second surfaces, said first surface having a flat or protruded printing surface which is brought into contact with a heat sensitive record medium, a heat generating section including resistors and electrodes connected to the electrodes and provided on said second surface of the protection layer, and a reinforcing member made of a low melting pint glass and provided on a side of the heat generating section remote from the protection layer. The reinforcing member improves a mechanical strength of the thermal head. The reinforcing member made of a glass also serves as a heat storage member, and thus a thermal property of the thermal head is improved. The reinforcing member may be formed by an aggregate of ceramic particles. The reinforcing member may contain a heat storage layer made of a low melting point glass and a heat conduction layer provided on the heat storage layer.

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Ichikawa, Japan

Atsushi Yoshida