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公开(公告)号：US4456915A
公开(公告)日：1984-06-26
申请号：US466275
申请日：1983-02-14
CPC分类号： B41J2/3356 , B41J2/33565
摘要： A printing apparatus employing a print head comprising a plurality of thin wire print electrodes mounted in a single plane and held in a closely-spaced row by an electrically insulating resilient material so that the wires are individually movable out of the planar alignment to a limited extent with respect to the other wires in the array. A relatively rigid backing member is provided to support the electrode array and the print head is mounted in a relatively fixed position relative to the print ribbon and a predetermined pressure is produced between the print head and the electrothermal print ribbon during printing operations.
摘要翻译： 一种采用打印头的打印装置，包括安装在单个平面中的多个细丝印刷电极，并通过电绝缘的弹性材料保持在紧密排列的行中，使得电线可以在有限的程度上单独地移出平面对准 相对于阵列中的其他线。 提供相对刚性的背衬构件以支撑电极阵列，并且打印头相对于打印色带安装在相对固定的位置，并且在打印操作期间在打印头和电热打印色带之间产生预定的压力。
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公开(公告)号：US4650351A
公开(公告)日：1987-03-17
申请号：US729023
申请日：1985-04-30
申请人： Vencil D. Engle , Cameron H. Hafer , Frank M. Hughes , Donald J. Steger , Edward G. Stewart , Ramon L. Street , John A. Thompson
发明人： Vencil D. Engle , Cameron H. Hafer , Frank M. Hughes , Donald J. Steger , Edward G. Stewart , Ramon L. Street , John A. Thompson
CPC分类号： B41J33/26
摘要： A thermal printer (10) has a thermal transfer medium (28) fed past a thermal printhead (21) at a substantially constant velocity by a feed roll (82) engaging the thermal transfer medium just prior to the printhead to maintain a portion of the thermal transfer medium between the printhead and the feed roll relatively stiff. The feed roll is mounted on a cartridge (30) having the thermal transfer medium supplied therefrom. A drag brake (70) is disposed in the feed path of the thermal transfer medium prior to the feed roll to cause a substantially constant premetering tension to be applied to the thermal transfer medium irrespective of the coefficient of friction between the drag brake and the thermal transfer medium. A carrier (14), which supports the printhead and a feed roll driver (90), is driven separately from the feed roll driver so that various ratios between the velocities of the thermal transfer medium and the carrier are obtained to produce various print qualities. One print quality occurs in a draft mode, which is a relatively high speed, in which there is substantial conservation of the thermal transfer medium. The peel angle of the thermal transfer medium from a recording medium (12) on which printing occurs is maintained at a relatively low angle to increase the contact time between the thermal transfer medium and the recording medium.
摘要翻译： 热敏打印机（10）具有热传递介质（28），其通过刚好在打印头之前与热转印介质接合的进给辊（82）以基本恒定的速度被馈送通过热打印头（21），以保持一部分 打印头和进料辊之间的热转印介质相对较硬。 进料辊安装在其上提供有热转印介质的盒（30）上。 拖曳制动器（70）设置在进给辊之前的热转印介质的进给路径中，以使得将基本上恒定的预测张力施加到热转印介质上，而不管拖曳制动器和热量传感器之间的摩擦系数如何 转移介质。 支撑打印头和进料辊驱动器（90）的载体（14）与进料辊驱动器分开地驱动，使得获得热转印介质和载体的速度之间的各种比率以产生各种打印质量。 一个打印质量发生在一个相对较高的速度的牵伸模式中，其中存在大量的热转印介质的保存。 来自记录介质（12）的热转印介质的剥离角度保持在相对低的角度，以增加热转印介质和记录介质之间的接触时间。
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公开(公告)号：US4236834A
公开(公告)日：1980-12-02
申请号：US946710
申请日：1978-09-28
CPC分类号： B41J2/325
摘要： Electrothermal printing apparatus includes a thin, planar, endless ribbon of electrically resistive material having a thin conductive layer on an outside surface thereof and a row of spaced-apart, conductive styli individually selectively coupleable to the conductive layer through a voltage source and disposed in contact with the ribbon at the inside surface thereof opposite the conductive layer. Momentarily coupling selected ones of the styli to the voltage source produces heating of discrete areas of the resistive ribbon adjacent the momentarily coupled styli. The ribbon which is mounted on one or more rollers moves relative to the styli and in the same direction and at the same speed as an adjacent length of thermally sensitive paper so that discrete areas of the ribbon heated by the styli remain in contact with the thermally sensitive paper long enough to color discrete areas of the paper adjacent the heated discrete areas of the resistive ribbon.
摘要翻译： 电热印刷设备包括薄的，平面的电阻材料的环形带，其外表面上具有薄的导电层，以及一排间隔开的导电测针，其通过电压源单独地选择性地耦合到导电层并且设置成接触 其内表面上的带与导电层相对。 将选定的测针一次性地耦合到电压源，产生与瞬时耦合的测针相邻的电阻带的离散区域的加热。 安装在一个或多个辊上的带相对于测针移动，并且以与相邻长度的热敏纸相同的方向和速度移动，使得由测针加热的带的离散区域保持与热 敏感纸长到足以使纸张的离散区域与电阻色带的加热离散区域相邻。
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