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    Thermal printer and thermal printer head driving system
    1.
    发明授权
    Thermal printer and thermal printer head driving system 失效
    热敏打印机和热敏打印头驱动系统

    公开(公告)号：US5717837A

    公开(公告)日：1998-02-10

    申请号：US473918

    申请日：1995-06-07

    申请人： Tamotsu Asai ,  Minoru Suzuki ,  Kiyoshi Negishi ,  Katsumi Kawamura ,  Mikio Horie ,  Hiroshi Orita ,  Katsuyoshi Suzuki

    发明人： Tamotsu Asai ,  Minoru Suzuki ,  Kiyoshi Negishi ,  Katsumi Kawamura ,  Mikio Horie ,  Hiroshi Orita ,  Katsuyoshi Suzuki

    IPC分类号： B41J2/355 ,  G06K15/02 ,  G06F15/00

    CPC分类号： B41J2/355 ,  G06K15/028

    摘要： A thermal printer for forming an image on a sheet, with the image having a plurality of line image data. The thermal printer includes a thermal head having a plurality of linearly arranged thermal elements for forming the image. The total number of the thermal elements to be driven is determined. The thermal elements are driven for a predetermined time period in accordance with the line image data if the number of thermal elements to be driven is not greater than a predetermined value. If the total number of the thermal elements to be driven is greater than the predetermined value, then the predetermined time period is divided into a number of fractional time periods and the thermal elements are intermittently driven for each of the fractional time periods. The predetermined value is determined to avoid sticking between the thermal head and a thermosensitive sheet due to excess heat.

    摘要翻译： 一种用于在片材上形成图像的热敏打印机，其中图像具有多个线图像数据。 热敏打印机包括具有用于形成图像的多个线性排列的热元件的热​​敏头。 确定要驱动的热元件的总数。 如果要驱动的热元件的数量不大于预定值，则热元件根据线图像数据被驱动预定时间段。 如果要驱动的热元件的总数大于预定值，则将预定时间段分成多个分数时间段，并且对于每个分数时间段间歇地驱动热元件。 确定预定值以避免由于过热而在热敏头和热敏片之间粘附。

    Apparatus for driving heating elements of a thermal head
    3.
    发明授权
    Apparatus for driving heating elements of a thermal head 失效
    用于驱动热头的加热元件的装置

    公开(公告)号：US5719615A

    公开(公告)日：1998-02-17

    申请号：US642079

    申请日：1996-05-01

    申请人： Takuji Hashiguchi ,  Tamotsu Asai

    发明人： Takuji Hashiguchi ,  Tamotsu Asai

    IPC分类号： B41J2/36

    CPC分类号： B41J2/36

    摘要： The past print data of plural heating resistance elements adjacently disposed are stored and latched in first latching circuit, the present print data is stored and latched in second latching circuit, and corresponding to the latched outputs of these first and second latching circuits, when the heating resistance elements have printed in the past and when the heating resistance elements adjacently to both sides of each heating resistance element are presently used in printing, it is controlled so as to shorten the driving time. As a result, blurring of the print due to excessive temperature rise of the heating resistance elements may be suppressed. Hence, the printing quality may be enhanced.

    摘要翻译： 相邻设置的多个加热电阻元件的过去打印数据被存储并锁存在第一锁存电路中，当打印数据被存储并锁存在第二锁存电路中时，对应于这些第一和第二锁存电路的锁存输出，当加热 电阻元件在过去被印刷，并且当与加热电阻元件的两侧相邻的加热电阻元件目前用于印刷时，其被控制以缩短驱动时间。 结果，可以抑制由于加热电阻元件的过度升温引起的打印模糊。 因此，可以提高打印质量。