| 摘要 |
<p>PURPOSE:To contrive a uniform resistor layer and obtain a thermal head having excellent printing quality by applying a paste containing an organic compound of a metal to a substrate by a drawing method or by a spinner or a roll coater, and decomposing the compound. CONSTITUTION:A pair of electrode layers 2 are provided on an alumina substrate 1 provided with a glaze layer, and a line is drawn between the electrode layers by ejecting a resistor paste 4 from a drawing pen 3. The paste is a mixture (viscosity: 50000 cP) of respective organometallic compounds of Ru, Rh, Si, B and Bi, ethyl cellulose and terpineol. The paste is dried by leaving it to stand, is then baked at 800 deg.C to form a resistor layer 7, and a wear- resistant layer 8 is provided thereon by printing and baking a borosilicate glass frit paste. As a result, dispersion of resistance values is controlled to within 3%, and a uniform printed density is ensured.</p> |
