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9 条记录 (耗时 0.02 秒)

    Rotating head apparatus including a flying tape edge guide
    3.
    发明授权
    Rotating head apparatus including a flying tape edge guide 失效
    旋转头装置，包括飞行带边缘引导件

    公开(公告)号：US4686597A

    公开(公告)日：1987-08-11

    申请号：US780901

    申请日：1985-09-27

    申请人： Ross W. Johnston

    发明人： Ross W. Johnston

    IPC分类号： G11B15/61 ,  G11B15/60

    CPC分类号： G11B15/61

    摘要： A tape recording/retrieving system includes a tape helically-wrapped about a cylindrical headwheel. When the headwheel rotates, the tape is hydrodynamically lifted above the rotating surface of the headwheel. A plurality of tape edge guides, illustratively three, disposed about the circumference of the headwheel, provide support surfaces for the tape. The edge guides include surfaces adjacent the cylindrical headwheel surface which are also subject to hydrodynamic forces when the headwheel rotates, causing the edge guides to "fly" away from the rotating surface, thus reducing wear problems on the headwheel and the guides. Using a knowledge of the system parameters, the edge guides are fabricated with a prestress so that they fly at a particular distance above the rotating surface which provides a supporting surface for the flying tape.

    摘要翻译： 磁带记录/取回系统包括螺旋缠绕在圆柱形头轮上的磁带。 当头轮旋转时，胶带被水动力地提升在头轮的旋转表面上方。 围绕头轮的圆周设置的多个带边缘引导件（例如三个）为带提供支撑表面。 边缘引导件包括邻近圆柱形头轮表面的表面，当头轮旋转时，它们也受到流体动力的作用，导致边缘引导件“旋转”远离旋转表面，从而减少了头轮和引导件上的磨损问题。 利用系统参数的知识，边缘引导件用预应力制造，使得它们在旋转表面上方的特定距离处飞行，为飞行带提供支撑表面。

    Printhead for impact printer
    4.
    发明授权
    Printhead for impact printer 失效
    打印机打印头

    公开(公告)号：US3981236A

    公开(公告)日：1976-09-21

    申请号：US628341

    申请日：1975-11-03

    申请人： Ross W. Johnston ,  Barrie W. Witty

    发明人： Ross W. Johnston ,  Barrie W. Witty

    IPC分类号： B41J9/10 ,  B41J1/20

    CPC分类号： B41J9/10

    摘要： A printhead assembly, having an individual print hammer and actuator assembly for every other column of line print, includes a low mass hammer and a hairpin spring coupled to the hammer rear portion, and an actuator assembly with side arms meeting at the arm tip for rapidly impacting characters on a type band. A plural flexure spring assembly provides uniform stress during actuator assembly movement and enables hammer and actuator positional adjustment to be made by frontal access, and a slotted bearing assembly inclines each print hammer at a slight angle off the perpendicular to the print line and the plane of the record medium.

    摘要翻译： 具有用于每隔一列的行打印的单独打印锤和致动器组件的打印头组件包括耦合到锤后部的低质量锤和发夹弹簧，以及具有侧臂在臂尖处会聚以用于快速的致动器组件 影响类型乐队的角色。 多个弯曲弹簧组件在致动器组件运动期间提供均匀的应力，并且能够通过正面进入进行锤和致动器位置调节，并且开槽轴承组件将每个打印锤以垂直于打印线和 记录媒体。

    Pneumatic tension sensor
    5.
    发明授权
    Pneumatic tension sensor 失效
    气动张力传感器

    公开(公告)号：US4301687A

    公开(公告)日：1981-11-24

    申请号：US151496

    申请日：1980-05-19

    申请人： James W. Jewitt ,  Ross W. Johnston ,  Sanford Platter

    发明人： James W. Jewitt ,  Ross W. Johnston ,  Sanford Platter

    IPC分类号： G01L5/08 ,  G11B15/60

    CPC分类号： G01L5/08 ,  G11B15/607

    摘要： A tension sensor is placed within a fluid bearing supporting a flexible tape at least partially wrapped around the periphery thereof. The bearing includes a source of pressurized fluid, such as air, and a plurality of metered orifii for admitting fluid into the region of the periphery to support the tape on a fluid bearing. The sensor includes a chamber and at least two metered orifice means, one in communication with the region of pressurized fluid supporting the tape and the other in communication with the source of pressurized fluid. A pressure sensor senses the pressure within the chamber, the pressure being directly proportional to the tension in the tape.

    摘要翻译： 张力传感器被放置在支撑柔性带的流体轴承内，该柔性带至少部分地围绕其周边缠绕。 轴承包括诸如空气的加压流体源，以及用于将流体引入周边区域以将流体轴承支撑的多个计量流量。 该传感器包括一个腔室和至少两个计量孔口装置，一个与加压流体的区域相连，该压力流体区域支撑带子，另一个与加压流体源连通。 压力传感器感测室内的压力，压力与带中的张力成正比。

    High speed actuator for impact line printers
    6.
    发明授权
    High speed actuator for impact line printers 失效
    用于冲击线打印机的高速执行器

    公开(公告)号：US4075943A

    公开(公告)日：1978-02-28

    申请号：US624501

    申请日：1975-10-21

    申请人： Ross W. Johnston

    发明人： Ross W. Johnston

    IPC分类号： B41J9/38 ,  B41J9/02

    CPC分类号： B41J9/38

    摘要： A high-speed fast acting actuator for an impact printing mechanism. The actuator has an improved high-strength low-mass actuating arm made of magnetic material. The actuating arm comprises a uniform thickness center lever and plates of magnetic material attached at the moment arm.

    摘要翻译： 用于冲击打印机构的高速快动执行机构。 致动器具有由磁性材料制成的改进的高强度低质量致动臂。 致动臂包括均匀的厚度中心杆和附接在力臂上的磁性材料板。

    High speed printing mechanism
    7.
    发明授权
    High speed printing mechanism 失效
    高速打印机构

    公开(公告)号：US3964384A

    公开(公告)日：1976-06-22

    申请号：US450123

    申请日：1974-03-11

    申请人： Ross W. Johnston

    发明人： Ross W. Johnston

    IPC分类号： B41J9/10 ,  B41J9/02

    CPC分类号： B41J9/10

    摘要： A plurality of small pin-shaped low-mass print hammers are slideably mounted in a row opposite moving type. The low-mass print hammers are individually moved a short distance from a ready position to impact the moving type by individual highspeed actuators when a selected character is juxtaposed each of the hammers. The print hammers and actuators are returned to the ready position by spring means cooperating with damper means.

    摘要翻译： 多个小销状低质量打印锤可滑动地安装在与移动型相对的行中。 当选定的角色与每个锤并置时，低质量打印锤单独移动距离就绪位置一小段距离，以通过单独的高速执行器冲击移动类型。 打印锤和致动器通过与阻尼装置配合的弹簧装置返回就绪位置。

    Automatic print gap adjustment arrangement
    8.
    发明授权
    Automatic print gap adjustment arrangement 失效
    自动打印差距调整安排

    公开(公告)号：US3983803A

    公开(公告)日：1976-10-05

    申请号：US506071

    申请日：1974-09-16

    申请人： Roy D. Thomas ,  Ross W. Johnston

    发明人： Roy D. Thomas ,  Ross W. Johnston

    IPC分类号： B41J25/308 ,  B41J7/92

    CPC分类号： B41J25/308

    摘要： A mechanism is disclosed for automatically positioning the print mechanism with respect to the forms and ribbon in a printer assembly. The automatic adjustment takes place for varying thicknesses of the forms, which is a function of the number of copies being printed and the type of form, as well as the variations in the thickness of the ribbon. The above-mentioned adjustment takes place after there has been a simulation of the print hammer striking the paper which may be a single-part or multi-part form.

    Automatic print gap adjustment arrangement
    9.
    发明授权
    Automatic print gap adjustment arrangement 失效
    自动打印差距调整安排

    公开(公告)号：US3981235A

    公开(公告)日：1976-09-21

    申请号：US481600

    申请日：1974-06-21

    申请人： Roy D. Thomas ,  Ross W. Johnston

    发明人： Roy D. Thomas ,  Ross W. Johnston

    IPC分类号： B41J25/308 ,  B41J1/20

    CPC分类号： B41J25/308

    摘要： The mechanism herein relates to the automatic positioning of the print mechanism with respect to the forms and ribbon in a printer assembly. The automatic adjustment takes place for varying thicknesses of the forms, which is a function of the number of copies being printed and the type of form, as well as the variations in the thickness of the ribbon. The abovementioned adjustment takes place after there has been a simulation of the print hammer striking the paper which may be a single-part or multi-part form. Simulation is obtained by extending a probe to deform the forms in the same manner as a print hammer deforms the forms in the actual printing operation.

    摘要翻译： 这里的机构涉及打印机构相对于打印机组件中的形状和色带的自动定位。 对于形式的不同厚度进行自动调节，这是打印份数和形式类型以及色带厚度变化的函数。 上述调整发生在打印锤的模拟之后，纸张可能是单件或多件形式。 模拟是通过延伸探针以使打印锤在实际打印操作中使形状变形的方式与形状变形而获得的。