| 摘要 |
PURPOSE:To produce a thermal head which is compact, low in cost and having excellent rsolution and high reliability, by a method wherein resistors and conductors are provided on green sheets of an insulator, the conductors are wired in a three-dimensional manner by using through-holes, the resistors are provided by using green sheets or by thick-film printing, and the sheets are laminated in the direction of thickness to produce a heating element layer. CONSTITUTION:The green sheets 1 of an insulator and those of a resistor are produced from slurries obtained by dispersing an insulator powder and a resistor powder into organic vehicles. The through-holes 4 required for wiring between the layers of the green sheets 1 are punched out. Conductors patterns 2 are printed on the green sheets 1 by using a conductor paste, the paste is packed into the through-holes, the green sheets of the resistor are punched into predetermined forms, and then they are adhered to the predetermined positions. Thus produced green sheets are laminated so that they can be wired in a three-dimensional manner, and are pressure-bonded to each other by a heat press to produce a green laminate body. The green laminate body is cut into a predetermined form, and after a binder-removing step, it is sintered, and external lead- out electrodes are provided by baking to obtain a laminate ceramic thermal head. |
