Keyboard multiple switch assembly
    1.
    发明授权
    Keyboard multiple switch assembly 失效
    键盘多开关组合

    公开(公告)号:US4274752A

    公开(公告)日:1981-06-23

    申请号:US25825

    申请日:1979-04-02

    摘要: An electronic switch keyboard for typewriters or office machines includes a multiple switch at selected key positions to provide two signal inputs to a utilization device. A first capacitor switch is actuated to provide a first signal upon initial key depression and a second contact switch, common to all selected key positions, is actuated to provide a second signal upon further key depression at the selected key positions. A ground plane forms a portion of the contact switch and further serves to reduce parasitic capacitance and to shield the capacitive switches from stray electrical noise occasioned by the contact switch or other electrical inputs. A dielectric material is used to accurately separate the ground plane from the capacitive switch and further serves as a force spreading device for the contact switch. When the keyboard is used in conjunction with a typewriter, the first signal may be used to effect character selection and printing and the second signal to effect repeated printing of the same character. Consistent with prior mechanical typewriter keyboards, three increasing levels of force are required to be overcome as the key is depressed: a pretravel force, a first switch actuation force, and a second switch actuation force.

    摘要翻译: 用于打字机或办公室机器的电子开关键盘包括在所选择的键位置处的多个开关,以向利用装置提供两个信号输入。 启动第一电容器开关以在初始键按压时提供第一信号,并且致动所有所选键位置共同的第二接触开关,以在所选择的键位置处进一步按下键时提供第二信号。 接地平面形成接触开关的一部分,并且还用于减小寄生电容并且将电容开关屏蔽到接触开关或其它电气输入引起的杂散电噪声。 介电材料用于将接地平面与电容式开关精确分开,并且还用作接触开关的力传播装置。 当键盘与打字机一起使用时,可以使用第一信号来影响字符选择和打印,并且第二信号可以用于实现相同字符的重复打印。 与现有的机械打字机键盘一致,当键被按下时,需要克服三个增加的力:预行程力,第一开关致动力和第二开关致动力。

    Monolithic optical scanner
    4.
    发明授权
    Monolithic optical scanner 失效
    单片光学扫描仪

    公开(公告)号:US5157535A

    公开(公告)日:1992-10-20

    申请号:US827665

    申请日:1992-01-29

    摘要: An optical system having a single, monolithic scan element as shown in the drawing in which surface 6 is concave, surface 7 is convex, surface 8 is convex, surface 9 is convex and the circumference of surface 9 is convex, surface 10 is convex, surface 11 is convex, and surface 13 is flat. f-theta correction is made primarily at surfaces 6, 9, 10 and 13. The element is molded from optical grade plastic and provides improved performance, no assembly adjustment, performance enhancement from its complex surfaces, and low cost.

    摘要翻译: 具有如图所示的单个单片扫描元件的光学系统,其中表面6是凹的,表面7是凸的,表面8是凸的,表面9是凸的,表面9的圆周是凸的,表面10是凸的, 表面11是凸的,表面13是平的。 f-θ校正主要在表面6,9,10和13处进行。该元件由光学级塑料模制而成,并且提供改进的性能,无需组件调整,其复杂表面的性能增强和低成本。

    Ultra-low energy micro-fluid ejection device
    5.
    发明授权
    Ultra-low energy micro-fluid ejection device 有权
    超低能量微流体喷射装置

    公开(公告)号:US07178904B2

    公开(公告)日:2007-02-20

    申请号:US10986338

    申请日:2004-11-11

    IPC分类号: B41J2/05 H05B3/00

    摘要: A micro-fluid ejection device for ultra-small droplet ejection and method of making a micro-fluid ejection device. The micro-fluid ejection device includes a semiconductor substrate containing a plurality of thermal ejection actuators disposed thereon. Each of the thermal ejection actuators includes a resistive layer and a protective layer for protecting a surface of the resistive layer. The resistive layer and the protective layer together define an actuator stack thickness. The actuator stack thickness ranges from about 500 to about 2000 Angstroms and provides an ejection energy per unit volume of from about 10 to about 20 gigajoules per cubic meter. A nozzle plate is attached to the semiconductor substrate to provide the micro-fluid ejection device.

    摘要翻译: 用于超小液滴喷射的微流体喷射装置和制造微流体喷射装置的方法。 微流体喷射装置包括含有多个设置在其上的热喷射致动器的半导体基板。 每个热喷射致动器包括电阻层和用于保护电阻层的表面的保护层。 电阻层和保护层一起限定致动器堆叠厚度。 致动器堆叠厚度范围为约500至约2000埃,并且每单位体积提供约10至约20千兆焦耳/立方米的喷射能量。 喷嘴板附接到半导体衬底以提供微流体喷射装置。