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    • 8. 发明授权
    • Printer with reversible ribbon driving means for rewinding overshot
ribbon
    • 具有可逆带驱动装置的打印机,用于重绕卷带
    • US5993092A
    • 1999-11-30
    • US28054
    • 1998-02-23
    • Anthony James Palmer
    • Anthony James Palmer
    • B41J17/04B41J17/14B41J33/54B41J33/36B41J33/40B41J33/44
    • B41J17/04B41J17/14B41J33/54
    • A thermal printer for printing on a continuous print medium by ink transfer from a thermal print ribbon has a print head which is pivotally mounted and which is driven in an oscillatory nodding motion by means of a stepper motor so as repeatedly to bring a linear array of energizable printing elements to bear against a platen roller. Both the element array and the platen extend transversely to respective paths of travel of the print medium and the ribbon. The print medium is fed through the printer from an inlet region, between the platen and print head, and thence to an outlet region. The instantaneous rate of travel of the print medium past the print head is substantially the same as the rate of feed of print medium to the printer. Typically this rate is of the order of 250 to 400 mm per second. The ribbon also travels between the print head and the platen, overlying the print medium and is driven in such a manner that it travels at the same rate as the print medium during each printing operation. Between each printing operation the ribbon is driven in reverse to rewind any unused portion of ribbon which has overshot the printhead.
    • 一种热敏打印机,用于通过从热敏打印色带传送油墨在连续打印介质上进行打印,具有可枢转地安装的打印头,并且通过步进电机以振荡点动运动驱动,以便重复地使线性阵列 可激励的印刷元件抵靠压纸辊。 元件阵列和压板都横向延伸到打印介质和色带的相应行进路径。 打印介质通过打印机从入口区域,在压板和打印头之间,然后到出口区域进给。 打印介质经过打印头的瞬时行进速率与打印介质的打印速度基本相同。 通常这个速率是每秒250到400毫米的数量级。 色带还在印刷头和压板之间移动,覆盖在打印介质上并且以这样的方式驱动,使得它在每次打印操作期间以与打印介质相同的速率行进。 在每次打印操作之间,色带反向驱动,以倒带已经超过打印头的色带的任何未使用部分。
    • 10. 发明授权
    • Bidirectional ink sheet driving mechanism in a thermal transfer printer
    • 热转印打印机中的双向油墨纸驱动机构
    • US4812063A
    • 1989-03-14
    • US169076
    • 1988-03-16
    • Michio KunimitsuHiroshi Tomita
    • Michio KunimitsuHiroshi Tomita
    • B41J17/12B41J17/14B41J17/24B41J33/16
    • B41J17/24B41J17/14
    • The thermal transfer printer of the present invention rotates a take-up roll and supply roll for an ink sheet by means of a first friction ring, which transmits the forward directed rotation of a driving motor for carrying the ink sheet to a take-up roll for the ink sheet by the friction force thereof when the ink sheet is carried in the forward direction and applies the brake power to the take-up roll for the ink sheet by frictional force thereof when the ink sheet is carried in the backward direction, and a second friction ring, which transmits the backwardly directed rotation of the driving motor to a supply roll for the ink sheet by the frictional force thereof when the ink sheet is carried in the backward direction and applies the brake power to the supply roll by the frictional force thereof when the ink sheet is carried in the forward direction. Accordingly, the ink sheet can be carried under the stabilized condition in both the forward direction and the backward direction, whereby the ink sheet, which is carried together with a recording paper in the initial position setting of the recording paper, can be rewound to use without wastefulness.
    • 本发明的热转印打印机通过第一摩擦环旋转用于油墨纸的卷取辊和供给辊,该第一摩擦环将用于将油墨片运送的驱动电机的向前旋转传递到卷取辊 当油墨片沿着向前方向携带时,通过其油墨片的摩擦力对油墨片施加制动力,并且当油墨纸向后移动时通过摩擦力将制动力施加到油墨片的卷取辊上,以及 第二摩擦环,当油墨片沿着向后的方向被携带时,将驱动马达的向后旋转传递到用于油墨纸的供给辊的摩擦力,并且通过摩擦力将制动力施加到供给辊 当墨纸沿正向方向运送时的力。 因此,油墨纸可以在向前和向后两个方向的稳定状态下承载,由此在记录纸的初始位置设置中与记录纸一起携带的油墨纸可以重新卷绕使用 没有浪费。