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    • 3. 发明授权
    • Apparatus for enhancing ink-flow reliability in a thermal-inkjet pen;
method for priming and using such a pen
    • 用于提高热喷墨笔中的油墨流动可靠性的装置; 启动和使用这种笔的方法
    • US5517217A
    • 1996-05-14
    • US968705
    • 1992-10-30
    • Robert D. HaselbyIrene H. WilliamsGerold Firl
    • Robert D. HaselbyIrene H. WilliamsGerold Firl
    • B41J2/165
    • B41J2/16579
    • Signals indicating ink-discharge presence control priming and preferably halt document creation pending ink resupply--or pending an operator command to go on without resupply. A detector senses ink discharge; circuits including a programmed microprocessor apply the detector signal to control, most typically, pen priming or repriming--and preferably related functions including suspension of printer operation. The detector preferably includes an optical source and detector along an optical path that intersects an ink-discharge path. With a pen that has multiple ink-discharge nozzles, preferably the apparatus distinguishes between ink discharge from the different nozzles (by correlation with nozzle-actuating pulses), and accordingly controls priming of each nozzle independently. Preferably this system is operated before starting to print a new sheet and upon newly installing a pen. In event of inadequate ink discharge, progressively more-energetic priming impulses (higher voltage or duration, or both) are directed to the pen, until adequate discharge results or no further energy increase is deemed suitable.
    • 指示喷墨存在控制启动的信号,并且优选地暂停文件创建,等待墨水补充 - 或等待操作者命令继续进行而不需要补给。 检测器感测墨水排出; 包括编程的微处理器的电路应用检测器信号来控制,最典型的是笔启动或重新引导,并且优选地包括打印机操作中止的相关功能。 检测器优选地包括沿着与喷墨路径相交的光路的光源和检测器。 使用具有多个喷墨喷嘴的笔,优选地,该装置区分来自不同喷嘴的墨排出(通过与喷嘴致动脉冲相关),并且因此独立地控制每个喷嘴的启动。 优选地,该系统在开始打印新纸张之前和新安装笔时操作。 在油墨排出不足的情况下,逐渐更能量的起动脉冲(更高的电压或持续时间,或两者)被引导到笔,直到充分的放电结果或者没有进一步的能量增加被认为是合适的。