Method of damping a stepping motor
    1.
    发明授权
    Method of damping a stepping motor 失效
    阻尼步进电机的方法

    公开(公告)号:US4438379A

    公开(公告)日:1984-03-20

    申请号:US273625

    申请日:1981-06-15

    IPC分类号: H02P8/32 G05B19/40

    CPC分类号: H02P8/32

    摘要: For a stepping motor having a rotatable stator magnetic field for driving the rotor, there is disclosed a method of damping the oscillations of the rotor which occurs when the rotatable stator magnetic field is stopped upon arriving at a desired rotational position by measuring quantities related to the instantaneous velocity of the rotor due to the oscillations of the rotor about the desired rotational position, rotationally displacing the stator magnetic field from the desired rotational position in a direction opposite to the direction of the oscillation, and thereafter returning the stator magnetic field to the desired stopping position.

    摘要翻译: 对于具有用于驱动转子的可旋转定子磁场的步进电动机,公开了一种阻尼转子振荡的方法,该方法是当可旋转的定子磁场在到达期望的旋转位置时停止,通过测量与 由于转子围绕期望的旋转位置的振荡而导致的转子的瞬时速度,在与振荡方向相反的方向上将定子磁场从期望的旋转位置旋转移位,然后将定子磁场返回到期望的 停止位置

    Paper supply and stacking apparatus
    2.
    发明授权
    Paper supply and stacking apparatus 失效
    供纸和堆垛设备

    公开(公告)号:US4583872A

    公开(公告)日:1986-04-22

    申请号:US604748

    申请日:1984-04-27

    摘要: A paper tray having a bottom, front and rear walls extending upwardly from the bottom, and side walls extending upwardly from the bottom to define an open boxlike structure for storage of sheets of paper in readiness for use. A paper receiver is pivotably mounted on the tray for receiving sheets of paper after printing thereof. The paper receiver has a first position in which paper can be fed automatically from the tray to a print roller and a second position in which paper can be manually fed to the print roller. In the automatic mode, the paper is fed by a drive roller to produce a buckle at its leading position to insure alignment at the print roller and subsequent straight, unskewed feed. The paper receiver carries a conveyor belt driven from the print roller at a greater linear speed to insure positive feed of the paper from the print roller to a receiving station.

    摘要翻译: 具有从底部向上延伸的底部,前壁和后壁的纸盘以及从底部向上延伸的侧壁以限定用于存储纸张的打开盒状结构以供使用。 纸张接收器可枢转地安装在托盘上,用于在打印纸张之后接收纸张。 纸张接收器具有第一位置,其中纸张可以自动地从托盘进给到打印辊,并且第二位置,纸可以被手动地馈送到打印辊。 在自动模式下,纸张由​​驱动辊进给,以在其引导位置产生带扣,以确保打印辊和随后的直线,未接合的进给位置对齐。 纸张接收器以更大的线速度承载从打印辊驱动的传送带,以确保纸从打印辊到接收台的正向进给。

    Method of stopping a stepping motor
    3.
    发明授权
    Method of stopping a stepping motor 失效
    停止步进电机的方法

    公开(公告)号:US4469995A

    公开(公告)日:1984-09-04

    申请号:US399207

    申请日:1982-07-19

    IPC分类号: H02P8/32 H02K29/04

    CPC分类号: H02P8/32

    摘要: A method of stopping a feedback-controlled stepping motor having a stator and a rotor wherein the drive of the stator field is leading the rotor by more than one step and the rotor is rotating with an angular velocity within a first range of values is performed by decreasing the drive lead of the stator field from its slewing value to another value whereby the angular velocity of the rotor decreases below the first range and sensing for the decrease of the angular velocity of the rotor to within a second range of values so that when the angular velocity of the rotor is within the second range of values the rotation of the stator field is stopped to brake the rotor.

    摘要翻译: 一种停止具有定子和转子的反馈控制的步进电动机的方法,其中定子磁场的驱动使转子超过一步,并且转子以第一值范围内的角速度旋转,由 将定子磁场的驱动引线从其回转值减小到另一值,由此转子的角速度降低到第一范围以下,并感测到转子的角速度降低到第二范围内,使得当 转子的角速度在定子磁场的转动被停止以制动转子的值的第二范围内。

    Paper supply and stacking apparatus
    4.
    发明授权
    Paper supply and stacking apparatus 失效
    供纸和堆垛设备

    公开(公告)号:US4456240A

    公开(公告)日:1984-06-26

    申请号:US321419

    申请日:1981-11-16

    摘要: A paper tray has a first bottom, first front and rear walls extending upwardly from the first bottom, first and second side walls extending upwardly from this bottom. The walls and bottom define an open boxlike structure for storage of sheets of paper prior to use. A cover is pivotably mounted to the top of the lower side walls in the region of the rear wall extends toward the first front wall. The cover is shorter than the first bottom to provide a feed gap between the free end of the cover and the front wall so that paper can be removed from the boxlike structure. Each of the lower side walls has an extension upwardly extending beyond the level of the cover. Paper receiving means has a second bottom upwardly displaced from and overhanging the feed gap and the front wall. First and second upper side walls are connected to the ends of the extensions remote from the rear wall and extend upwardly from the upper bottom. A front wall extending upwardly from the edge of the second bottom remote from the connection to the extensions. The second bottom, the upper side walls and front wall define a receptacle for receiving after use sheets of paper initially stored in the defined open boxlike structure.

    摘要翻译: 纸盘具有从第一底部向上延伸的第一底部,第一前壁和后壁,从该底部向上延伸的第一和第二侧壁。 墙壁和底部限定一个开放的盒状结构,用于在使用前存放纸张。 在后壁的区域中,盖可枢转地安装到下侧壁的顶部,朝向第一前壁延伸。 盖比第一底部短,以在盖的自由端和前壁之间提供进给间隙,使得纸可以从盒状结构中移除。 每个下侧壁具有向上延伸超过盖的水平面的延伸部。 纸张接收装置具有从进给间隙和前壁向上移动并从其伸出的第二底部。 第一和第二上侧壁连接到远离后壁的延伸部分的端部,并从上部底部向上延伸。 从第二底部的边缘向上延伸的前壁,远离连接到延伸部。 第二底部,上侧壁和前壁限定了用于在使用最初存储在限定的敞开框状结构中的纸张之后接收的容器。

    Indicia recording apparatus
    5.
    发明授权
    Indicia recording apparatus 失效
    标记记录装置

    公开(公告)号:US4394076A

    公开(公告)日:1983-07-19

    申请号:US282279

    申请日:1981-07-10

    IPC分类号: G06K15/12 B41B21/08 G01D9/38

    摘要: Apparatus for recording characters on a photographic record medium including spaced feed and takeup reels for carrying a roll of the medium. A support such as a cylinder is disposed between the reels supports the record medium. A carriage is controllably movable opposite the support and in a direction transverse to the direction of record medium movement. A recording head on the carriage has a radiation emitter device for emitting intensity modulated radiation toward the cylindrical support along a scan line which makes an angle with the direction of the transverse movement.

    摘要翻译: 用于在摄影记录介质上记录字符的装置,包括用于承载介质卷的间隔进给和收卷盘。 诸如气缸的支撑件设置在支撑记录介质的卷轴之间。 托架可控地可移动地与支撑件相反并且在横向于记录介质运动方向的方向上移动。 支架上的记录头具有辐射发射器装置,用于沿着与横向移动方向成一定角度的扫描线朝着圆柱形支撑件发射强度调制辐射。

    Clock generator
    6.
    发明授权
    Clock generator 失效
    时钟发生器

    公开(公告)号:US4386271A

    公开(公告)日:1983-05-31

    申请号:US284185

    申请日:1981-07-17

    IPC分类号: H04N1/053 H04N1/113 G06K9/00

    摘要: A clock generator for establishing working clock pulses occurring for constant increments in a scan path of a laser scanner which cyclically sweeps over a record medium at a non-constant velocity includes: a generator of a fiducial pulse at least once per cycle of sweep; a frequency synthesizer responsive to the fiducial pulses for generating radio-frequency clock pulses having a frequency greater than the fiducial pulses, and in synchronization therewith; a storage for storing a plurality of count values, each of the count values being associated with a given increment along the scan path; a working clock pulse generator, including a counter which counts the radio-frequency clock pulses, for emitting a working clock pulse each time the counter counts a count value received by the working clock pulse generator. For each working clock pulse a new count value stored in the storage is transmitted to the working clock pulse generator.

    摘要翻译: 一种时钟发生器,用于在激光扫描器的扫描路径中建立以恒定增量发生的工作时钟脉冲,其以非恒定速度循环扫描记录介质,包括:每个扫描周期至少一次的基准脉冲发生器; 频率合成器,其响应于基准脉冲,用于产生具有大于基准脉冲的频率的射频时钟脉冲,并与其同步; 用于存储多个计数值的存储器,每个计数值与沿扫描路径的给定增量相关联; 工作时钟脉冲发生器,包括对射频时钟脉冲进行计数的计数器,用于每当计数器对由工作时钟脉冲发生器接收的计数值进行计数时发出工作时钟脉冲。 对于每个工作时钟脉冲,存储在存储器中的新计数值被发送到工作时钟脉冲发生器。

    Indicia recording apparatus
    7.
    发明授权
    Indicia recording apparatus 失效
    标记记录装置

    公开(公告)号:US4310226A

    公开(公告)日:1982-01-12

    申请号:US173966

    申请日:1980-07-31

    IPC分类号: G06K15/12 B41B21/08 G01D9/38

    摘要: Apparatus for recording characters on a photographic record medium including spaced feed and takeup reels for carrying a roll of the medium. A cylindrical support disposed between the reels supports the record medium. A carriage is controllably movable opposite the cylindrical support and in a direction along the cylindrical axis of the latter. A recording head on the carriage has a radiation emitter device for emitting intensity modulated radiation toward the cylindrical support along a scan line which is in a plane intersecting such cylindrical axis.

    摘要翻译: 用于在摄影记录介质上记录字符的装置,包括用于承载介质卷的间隔进给和收卷盘。 设置在卷轴之间的圆柱形支撑件支撑记录介质。 托架可控制地可移动地与圆柱形支撑件相反,并且沿着其中的圆柱形轴线的方向移动。 载架上的记录头具有辐射发射器装置,用于沿着与这种圆柱轴线相交的平面的扫描线朝向圆柱形支撑件发射强度调制辐射。

    Vibrating thermal printing
    8.
    发明授权
    Vibrating thermal printing 失效
    振动热敏打印

    公开(公告)号:US4675701A

    公开(公告)日:1987-06-23

    申请号:US853677

    申请日:1986-04-18

    IPC分类号: B41J2/325 G01D15/10

    CPC分类号: B41J2/325

    摘要: A vibrating thermal printer transfers thermoplastic ink from a ribbon to a record medium by selectively heating resistive elements on a substrate of electrically conductive material. While the record medium and ribbon are passing the print head, the print head, by means of piezoelectric phenomenon, induces vibration in the head to facilitate the deposition of thermoplastic ink onto the paper. There is also shown the preheating of the ribbon to improve throughput.

    摘要翻译: 振动热敏打印机通过选择性地加热导电材料的基底上的电阻元件,将热塑性墨水从带传送到记录介质。 当记录介质和色带通过打印头时,打印头通过压电现象在头部引起振动,以便热塑性墨水沉积到纸上。 还显示了预热丝带以提高产量。

    STEPPING MOTOR DRIVE APPARATUS, GEAR PUMP, AND STEPPING MOTOR-DRIVEN GEAR PUMP SYSTEM

    公开(公告)号:US20190323501A1

    公开(公告)日:2019-10-24

    申请号:US16411886

    申请日:2019-05-14

    发明人: Mosi Chu

    IPC分类号: F04C15/00 F04C2/18

    摘要: A stepping motor-driven system includes a stepping motor, an output device, and a belt and pulley system operably coupling the stepping motor with the output device to impart rotation therebetween. The belt and pulley system includes an input pinion engaged with the stepping motor, an output pinion engaged with the output device, and a timing belt. The timing belt is disposed about the input and output pinions, inhibits elongation, and defines a plurality of spaced-apart grooves on an inwardly-facing surface thereof that are wider than the teeth of the pinions and are configured to receive the teeth of the pinions in meshed engagement therewith. As a result, a gap is defined within each groove. The gaps permit backlash of the timing belt in response to changes in a rotational speed input to the belt and pulley system from the stepping motor, thereby inhibiting loss of control.

    Printer ribbon cartridge with means for transversely displacing ribbon
during advance
    10.
    发明授权
    Printer ribbon cartridge with means for transversely displacing ribbon during advance 失效
    打印机色带墨盒带有用于在提前进行横向移位色带的装置

    公开(公告)号:US4840504A

    公开(公告)日:1989-06-20

    申请号:US48237

    申请日:1987-05-11

    IPC分类号: B41J32/00 B41J33/56

    CPC分类号: B41J32/00 B41J33/56

    摘要: An ink ribbon cartridge for a printer comprising a storage reel for an ink ribbon, a take-up reel for the ink ribbon, drive wheels for longitudinally advancing the ink ribbon from the storage reel to the take-up reel for printing on the ribbon, and a pulley or roller which rides on the cam and which is coupled to a further pulley or roller, these parts cooperating for transversely displacing the ribbon during its longitudinal advance to offset the area of the ribbon utilized in printing.

    摘要翻译: 一种用于打印机的墨带盒,包括用于墨带的存储卷轴,用于墨带的卷取卷轴,用于将墨带从存储卷轴纵向推进到卷带卷轴上的打印带的驱动轮, 以及骑在凸轮上并且连接到另一个皮带轮或辊子上的皮带轮或辊子,这些部件协同作用以在其纵向前进期间使带状物横向移位以偏移打印中使用的色带的区域。