| 摘要 |
PURPOSE:To extend the life and reduce the production cost with a higher reliability of a print head by housing a diode for checking reverse current and a matrix circuit into a plurality of airthight sealed container in a heat-sensitive print head. CONSTITUTION:In a head-sensitive print head including a matrix circuit which comprises several trains of conduction lead block 35 in which a heat-sensitive resistor 33 and a diode 34 for checking reverse current are separately connected in series from a plurality of common electrodes 31 and another conduction lead block 36 able to get in contact with the conduction lead blocks 35 at a specified position, while the diode 34 for checking the reverse current and the matrix circuit are housed in a plurality of airtight sealed containers 411-41N. The common electrode 31, a conduction lead block 32, a heat-sensitive resistor block 33 and the like are manufacture separately as independent parts 42. The airtight sealed containers housing the diode 34 and the matrix circuit are increased or decreased according to the necessary number of the heat-sensitive resistor blocks 33. In this manner, a heat-sensitive printing head is manufactured as desired. |
