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    • 5. 发明授权
    • Thermal head drive circuit
    • 热敏头驱动电路
    • US4524368A
    • 1985-06-18
    • US595338
    • 1984-03-30
    • Toshiharu InuiHaruhiko Moriguchi
    • Toshiharu InuiHaruhiko Moriguchi
    • B41J2/36B41J2/355B41J2/365H04N1/23G01D15/10
    • B41J2/355B41J2/365
    • A thermal head drive circuit with the input connected to a source of printing data and the output connected to a thermal head including heater elements, so as to improve the picture quality of a thermal head recording apparatus for printing successive lines. Improved picture quality is effected by using data from previously printed lines to compute a corrected pulse energy for the line being printed. The circuit uses a heat storage state operator for operating the heat storage state of each of the heater elements constituting a thermal head, a pulse energy operator for computing a printing pulse energy to be applied to each of the heater elements, a memory for storing the electrical pulse energy used in the previously printed line, and a counter to count the number of dots on the line to be printed. The pulse energy operator uses data from the heat storage state operator, the counter, and from the memory which has data on the pulse energy used in previously printed lines. The output of the pulse energy operator is connected to a pulse generator which is used to drive the heater elements of a thermal head.
    • 一种热敏头驱动电路,其输入端连接到打印数据源,输出端连接到包括加热器元件的热敏头,从而提高用于打印连续线的热敏头记录装置的图像质量。 通过使用来自先前打印的线的数据来计算改进的图像质量,以计算正在打印的线的校正脉冲能量。 电路使用蓄热状态操作器来操作构成热敏头的各个加热元件的蓄热状态,用于计算要施加到每个加热器元件的打印脉冲能量的脉冲能量算子,存储器 在先前打印的线中使用的电脉冲能量,以及计数要打印的线上的点数的计数器。 脉冲能量运算符使用来自储热状态运算符,计数器和存储器中的数据,存储器具有关于以前打印的线中使用的脉冲能量的数据。 脉冲能量运算器的输出端连接到用于驱动热敏头的加热元件的脉冲发生器。