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    • 14. 发明授权
    • Printer and process for printing different size dots by setting drive
energies based on adjacent data bit logic
    • 通过基于相邻数据位逻辑设置驱动能量来打印和处理打印不同大小的点
    • US5973709A
    • 1999-10-26
    • US662564
    • 1996-06-13
    • Jiro TanumaNorio NakajimaShinichi Katakura
    • Jiro TanumaNorio NakajimaShinichi Katakura
    • G06K15/12H04N1/40B41J2/385B41J2/435B41J2/47H04N1/23
    • G06K15/1247H04N1/40031H04N1/40068
    • An LED printer includes a printing control unit and an LED head. When a video signal received at the control unit has a higher resolution than the LED head, the control unit carries out the logical AND between successive bit data of the video signal to convert the video signal to a first signal. Corresponding to a line timing signal, this first signal is transferred as a head data signal to the LED head and is then printed on a basic raster scanning line. Further, the control unit also carries out the exclusive-OR between the successive bit data of the video signal so that the video signal is converted to a second signal and outputted to a line buffer. Corresponding to an additional line timing signal, the second signal is transferred as another head data signal to the LED head and is printed on an additional raster scanning line. The LED head drive energy for performing printing along the basic raster scanning line is set independently.
    • LED打印机包括打印控制单元和LED头。 当在控制单元处接收的视频信号具有比LED头更高的分辨率时,控制单元执行视频信号的连续位数据之间的逻辑“与”,以将视频信号转换为第一信号。 对应于行定时信号,该第一信号作为头数据信号传送到LED头,然后印在基本光栅扫描线上。 此外,控制单元还执行视频信号的连续位数据之间的异或,使得视频信号被转换为第二信号并输出​​到行缓冲器。 对应于附加线路定时信号,第二信号作为另一个头数据信号传送到LED头,并被印刷在附加的光栅扫描线上。 用于沿着基本光栅扫描线执行打印的LED头驱动能量是独立设置的。
    • 15. 发明授权
    • Image printing method and non-impact printer wherein a received video
signal has a higher resolution than the printer printing head
    • 图像打印方法和非冲击打印机,其中所接收的视频信号具有比打印机打印头更高的分辨率
    • US5539525A
    • 1996-07-23
    • US36762
    • 1993-03-25
    • Jiro TanumaKatsuyuki ItoShinichi Katakura
    • Jiro TanumaKatsuyuki ItoShinichi Katakura
    • G06K15/02G06K15/12H04N1/40G01D15/14G06F15/00
    • G06K15/12G06K15/02H04N1/40031G06K2215/0091
    • A method for printing an image including the step of generating a basic line timing signal and an additional line timing signal providing timings between respective timings of the basic line timing signal, producing a matrix by a video signal of a number of lines corresponding to a ratio of a resolution of the video signal to a resolution of a printing portion, producing one dot of a grayscale data signal having grayscale information of dots of the matrix, and driving a printing head by head drive energy determined according to the grayscale data signal, when an image is printed by using the printing head having a resolution in the raster direction less than the resolution of the video signal for forming the image to be printed. Although a number of dots for forming the image is reduced, amount of information is not reduced since dot information is converted into the grayscale information, so that high-quality printing is possible at a time of printing for grayscale.
    • 一种用于打印图像的方法,包括产生基本行定时信号和附加行定时信号的步骤,所述附加行定时信号提供基本行定时信号的相应定时之间的定时,通过对应于比率的多行的视频信号产生矩阵 将视频信号的分辨率分解为打印部分的分辨率,产生具有矩阵的点的灰度信息的灰度数据信号的一个点,并且通过根据灰度数据信号确定的头驱动能量驱动打印头,当 通过使用光栅方向上的分辨率小于用于形成要打印的图像的视频信号的分辨率的打印头来打印图像。 虽然减少了用于形成图像的多个点,但是由于点信息被转换为灰度信息,因此信息量不会减少,从而在打印灰度时可以进行高质量的打印。
    • 16. 发明授权
    • Temperature control in a wire dot printer
    • 电线打印机温度控制
    • US5064302A
    • 1991-11-12
    • US514838
    • 1990-04-26
    • Jiro TanumaHideaki IshimizuTadashi KasaiChihiro Komori
    • Jiro TanumaHideaki IshimizuTadashi KasaiChihiro Komori
    • B41J2/30
    • B41J2/30
    • A wire dot printer has a thermistor that detects the temperature of a print head and a counter that starts counting when the detection temperature exceeds an alarm temperature. The printer can be controlled by switching over between normal-printing and reduced-character-printing in which a reduced number of print wires is used. When the detection temperature exceeds the alarm temperature, the printer will first stop and then control the print head in such a way as to reduce the temperature. Once the temperature drops back down below the alarm temperature, the printer will perform reduced-character-printing for a definite period of time based on the length of time from when the temperature exceeded the alarm temperature to when the temperature dropped back down below the alarm temperature. By increasing the length of time in which reduced-character-printing is carried out, the amount of heat given off by the print head decreases. Furthermore, by basing the time over which reduced-character-printing is performed on the length of time that the alarm temperature was exceeded. It is possible to set the reduced-character-printing time to an appropriate length such that the print head does not overheat and throughout is not excessively impaired.