Development of 16 dots/mm Thermal Printing Head

The development of a high-speed thermal printing head with a resolution of 16 dots/ram is described. Main features of the present study are as follows. 1) A meander shaped heating resistor is suitable for high-resolution printing and has a life of more than 2 X l0⁸pulses at the applied pulse width of 0.8 ms. 2) The deterioration characteristic of the meander shaped heating resistor depends on the pulse width. 3) The fabrication of a thermal printing head with 16 dots/mm resolution and high-speed drive was achieved by installing the integrated circuit (IC) containing a shift register, latch, and driver on the heating resistor board.