Thermal head for a printer
AssigneeOki Electric Industry Co., Ltd.
InventorsSusumu Shibata, Tsutomu Nomoto, Keiji Murasugi
Life of this patent
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Abstract
A thermal head for a thermal printer having a dielectric support and a plurality of conductive layers made of a single material has been found. Said conductive layer comprises a pair of lead lines at both the extreme ends of the same and a heater line formed in a zigzag fashion between said lead lines, and the material of the conductive layer is, for instance, nickel. A portion of said lead line is plated with a conductive material whose conductivity is better than that of the heater. Said heater line is covered with single protection layer of Al.sub.2 O.sub.3.
Claims14
A thermal head for a printer comprising a dielectric plane support, a plurality of first conductive layers of a single material mounted parallel to one another on said support, each of said layers being electrically insulated from one another, each of said conductive layers having a unitary structure including a pair of straight lead lines and a heater line formed in a zigzag fashion between said lead lines, said lead lines and said heater line being integral and continuous, a second conductive layer plated on part of said lead lines, the conductivity of the material of said second conductive layer being better than that of said first conductive layer, wherein the material of said first conductive layer is nickel.
A thermal head for a printer comprising a dielectric plane support, a plurality of first conductive layers of a single material mounted parallel to one another on said support, each of said layers being electrically insulated from one another, each of said conductive layers having a unitary structure including a pair of straight lead lines and a heater line formed in a zigzag fashion between said lead lines, said lead lines and said heater line being integral and continuous, a second conductive layer plated on part of said lead lines, the conductivity of the material of said second conductive layer being better than that of said first conductive layer, wherein the material of said first conductive layer is selected from the group consisting of Cr, Al, Pt, W, Mo and Ti.
Dependencies are inferred from the claim text.