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    • 1. 发明授权
    • Clam shell printer
    • 蛤壳式打印机
    • US06088049A
    • 2000-07-11
    • US15676
    • 1998-01-29
    • Pixie Ann AustinChristopher A. WiklofCathy L. Aragon
    • Pixie Ann AustinChristopher A. WiklofCathy L. Aragon
    • B41J2/32B41J3/01B41J3/407B41J15/04B41J23/36B41J29/02
    • B41J29/02B41J15/042B41J2/32B41J23/36B41J3/01B41J3/407
    • A printer for printing on an outer layer of a print medium on a print medium roll. The printer includes a base and a cover, which are pivotally coupled in a "clamshell" configuration for movement between a closed position in which the printhead is located in a printing position proximate the path of the media and an open position that is spaced from the printing position. The printer may use thermal or inkjet printing. The printer is used without a mechanical paper drive mechanism. The printer monitors movement of an outer wrap of the print medium as the print medium roll rotates in response to a user pulling print medium from the print medium roll. In one embodiment, the printer detects movement of the print medium with a metering roller and an optical rotation sensor. In another embodiment, the printer monitors movement of the print medium by detecting movement of index marks on the print medium. From the monitored movement of the print medium, the printer identifies a portion of the print medium aligned to the printhead and selects image portions to print in the identified portion. The printer then activates the printhead to print the selected image portions in the corresponding identified portion. A bias spring, together with movable mounting of the printhead, allows the printhead to remain engaged with the print medium as the radius of the print medium roll decreases as the print medium is dispensed.
    • 一种打印机,用于在打印介质卷上的打印介质的外层上进行打印。 打印机包括底座和盖,其以“蛤壳式”构造枢转地联接,用于在打印头位于靠近介质路径的打印位置中的关闭位置和与打印头间隔开的打开位置之间移动 打印位置。 打印机可能会使用热敏打印或喷墨打印。 使用打印机没有机械纸张驱动机构。 当打印介质辊响应于用户从打印介质辊拉取打印介质时,打印机监视打印介质的外部包装的运动。 在一个实施例中,打印机使用计量辊和光学旋转传感器检测打印介质的移动。 在另一个实施例中,打印机通过检测打印介质上的索引标记的移动来监视打印介质的移动。 从打印介质的监视的移动,打印机识别与打印头对准的打印介质的一部分,并选择在所识别的部分中打印的图像部分。 打印机然后激活打印头以在相应的识别部分中打印所选择的图像部分。 当打印介质被分配时,偏置弹簧与打印头的可移动安装一起允许打印头与打印介质保持接合,因为打印介质卷的半径减小。