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    • 3. 发明授权
    • Ink sensing system for vector plotters
    • 矢量绘图仪的油墨感测系统
    • US5299290A
    • 1994-03-29
    • US834969
    • 1992-02-14
    • Bruce H. Ostermeier
    • Bruce H. Ostermeier
    • B43L13/02G01D15/16G06K15/22G06F3/06
    • G06K15/22B43L13/024G01D15/16Y10S101/46
    • An ink sensing system for a vector plotter in which a pen is adapted to be raised and lowered from a drawing media surface along a system axis. An optical detection system is provided which has a focal point on the system axis and below the media surface when the pen is in its lowered position and at the media surface when the pen is in its raised position. The optical detection system includes a source of illumination and a detector system to determine the degree of reflectance from the media surface to indicate the presence or absence of ink on the media surface. In a particular embodiment the optical detection system is moveable and the movement of the optical detection system is coupled to the movement of the pen. Furthermore, the focal point of the optical detection system coincides substantially with the last point of contact of the pen with the media surface when the pen is in the raised position.
    • 一种用于矢量绘图仪的墨水感测系统,其中笔适于沿着系统轴线从绘图介质表面升高和降低。 提供了一种光学检测系统,当钢笔处于其升起位置时,当钢笔处于其升高位置时,其具有系统轴上的焦点和介质表面下方的介质表面。 光学检测系统包括照明源和检测器系统,用于确定从介质表面反射的程度,以指示介质表面上墨水的存在或不存在。 在特定实施例中,光学检测系统是可移动的,并且光学检测系统的移动与笔的移动耦合。 此外,当笔处于提升位置时,光学检测系统的焦点与笔与介质表面的最后一个接触点基本上重合。
    • 6. 发明授权
    • Ink chamber with pressure relief chamber having pressure relief aperture
and microparticles to exert capilliary action on ink
    • 具有压力释放室的油墨室具有压力释放孔和微粒以对油墨施加毛细作用
    • US5745138A
    • 1998-04-28
    • US643701
    • 1996-05-16
    • Bruce H. Ostermeier
    • Bruce H. Ostermeier
    • B41J2/175
    • B41J2/17553B41J2/17513
    • An ink jet cartridge comprising an ink chamber, at least one aperture coupling a pressure relief chamber to the ink chamber, the aperture having a small internal diameter for creating a negative pressure on any ink in the lower portion of the ink chamber and a plurality of microparticles positioned in the pressure relief chamber for forming a plurality of small interstices which form a capillary path in the pressure relief chamber, the microparticles creating a negative pressure on any ink in the lower portion of the ink chamber and the selected size of the microparticles resulting in a capillary path of selected size for controlling the magnitude of the negative pressure in the lower portion of the ink chamber. The pressure relief chamber is positioned below the ink chamber, the ink chamber including an opening to couple the ink cartridge to an ink jet head and the aperture is positioned at the lower portion of the ink chamber.
    • 一种喷墨墨盒,包括墨水室,将压力释放室连接到墨水室的至少一个孔,该孔具有小的内径,用于在墨水室的下部中的任何墨水上产生负压,并且多个 位于压力释放室中的微粒形成在压力释放室中形成毛细管路的多个小间隙,微粒在油墨室的下部的任何油墨上产生负压,并产生所选择的微粒尺寸 在选定尺寸的毛细管道中,用于控制墨室下部的负压的大小。 压力释放室位于墨水室下方,墨水室包括将墨盒连接到喷墨头的开口,孔位于墨水室的下部。