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公开(公告)号：US4527920A
公开(公告)日：1985-07-09
申请号：US503915
申请日：1983-06-13
申请人： John Mako
发明人： John Mako
CPC分类号： B41J9/50
摘要： Circuit for detecting variations in the nominal velocity of a character band and adjusting the hammer firing times to compensate for the variations. This circuit measures deviations in band velocity that are either faster or slower than a nominal velocity during each character emitter pulse and makes an appropriate correction in the subscan times that gate the hammer firing signals. A bidirectional counter is counted up at a high frequency to a value representing the emitter period including the velocity deviation and then counted down after the error determination at a selected frequency that is a preselected fraction of the high frequency. This technique corrects for each character emitter pulse and incorporates a timing proportionality to assure correct hammer impact.
摘要翻译： 用于检测字符带的标称速度的变化的电路，并且调整锤击次数以补偿变化。 该电路测量在每个字符发射极脉冲期间频带速度的偏差比标称速度更快或更慢，并且在敲击击发信号的次扫描时间内进行适当的校正。 双向计数器以高频计数到表示包括速度偏差在内的发射器周期的值，然后在作为高频的预选分数的选定频率的误差确定之后向下计数。 该技术校正每个字符发射器脉冲，并结合时序比例，以确保正确的锤击。
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公开(公告)号：US4945828A
公开(公告)日：1990-08-07
申请号：US295987
申请日：1987-01-12
IPC分类号： B41J1/20
CPC分类号： B41J1/20
摘要： A pulley for connecting a driven device, that is sensitive to speed variations, to be driven by an a.c. motor that is susceptible to speed variations, caused by power line disturbances. The pulley has a peripheral drive surface for a belt drive and two side surfaces through which an opening is formed to receive a drive shaft that is turned by the a.c. motor. One of the sides of the pulley has a slot formed therein with surfaces on each side of the slot. A resilient material of a preselected Durometer value is positioned within the slot and contiguous with at least one of the surfaces in the slot, against which an element projecting from the drive shaft acts to turn the pulley. During a momentary slowdown in the motor speed, the projecting element moves away from the resilient material and permits the momentum of the driven device to maintain its speed while the motor recovers its speed.
摘要翻译： 用于连接被驱动装置的滑轮，其对速度变化敏感，由一个a.c.驱动。 由电源线路干扰引起的易受速度变化影响的电机。 滑轮具有用于皮带驱动的外围驱动表面和两个侧表面，通过该两个侧表面形成开口以接收由直流电转动的驱动轴。 发动机。 滑轮中的一个侧面具有形成在其中的槽，其中槽的每一侧具有表面。 预选的硬度计值的弹性材料位于槽内并且与槽中的至少一个表面邻接，从该驱动轴突出的元件用于转动滑轮。 在电机速度瞬间减速时，突出元件远离弹性材料移动，并允许被驱动装置的动量在电机恢复其速度时保持其速度。
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公开(公告)号：US4294552A
公开(公告)日：1981-10-13
申请号：US115849
申请日：1980-01-28
申请人： John Mako
发明人： John Mako
CPC分类号： B41J33/34 , B41J33/51 , Y10S400/902
摘要： A printer having an ink ribbon with a bidirectional ribbon drive in which a pair of stepper motors have their windings cross-coupled so that a drag current flows through one stepper motor to apply drag torque to the ribbon when the other stepper motor is operated for driving.
摘要翻译： 一种具有双向色带驱动器的色带的打印机，其中一对步进电动机的绕组交叉耦合，使得当另一个步进电动机被驱动以驱动时，牵引电流流过一个步进电动机以向丝带施加拖曳扭矩 。
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公开(公告)号：US4060812A
公开(公告)日：1977-11-29
申请号：US741825
申请日：1976-11-15
申请人： John Mako , Walter Thornton Pimbley
发明人： John Mako , Walter Thornton Pimbley
摘要： Damper element which absorbs soundwave energy produced in the liquid mass of an ink jet nozzle by a magnetostrictive drop generator is submersed in the liquid mass with or without attachment to the nozzle chamber.
摘要翻译： 通过磁致伸缩液滴发生器吸收在喷墨嘴的液体质量中产生的声波能量的阻尼元件浸没在或不附着到喷嘴室的液体物质中。
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