| 摘要 |
PURPOSE:To enhance image capacity by reducing the irregularity in the resistance value of a heat generating resistor, by separating and shaping a heat generating resistor formed so as to cover a large number of current supply electrode patterns opposed to each other formed to the upper surface of a heat resistant layer by laser cutting so as to separate and form pairs of electrode patterns. CONSTITUTION:A pattern wherein the branched wires 121-12n of a common wire 12 and electrodes 131-13n correspond and oppose to each other so as to form pairs is formed on a substrate 15 having a heat resistant layer provided thereto. Appropriate intervals A are provided between both leading ends of the electrodes and the branched wires of the common wire 12. A strip like heat generating resistor 14 is connected and fixed to the substrate 15 so as to cover the upper parts of the leading ends of a large number of the electrodes and the branched wires 121-12n of the common wire 12 in a contacted state. Next, the strip like heat generating resistor 14 is cut and separated between adjacent electrodes by laser cutting not only to form a pair of thick film heads but also to perform shaping. By this method, because the thick film head has the same head shape as a thin film head, the irregularity in the resistance value of a resistor is reduced. |
