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    Method and apparatus for heating print medium in an ink-jet printer
    3.
    发明授权
    Method and apparatus for heating print medium in an ink-jet printer 失效
    用于在喷墨打印机中加热打印介质的方法和装置

    公开(公告)号：US5500667A

    公开(公告)日：1996-03-19

    申请号：US235772

    申请日：1994-04-29

    申请人： William H. Schwiebert ,  Corrina A. E. Hall ,  Damon W. Broder ,  Shelley I. Moore

    发明人： William H. Schwiebert ,  Corrina A. E. Hall ,  Damon W. Broder ,  Shelley I. Moore

    IPC分类号： B41J2/01 ,  B41J11/00 ,  B41J29/00

    CPC分类号： B41J11/002

    摘要： A method and apparatus for heating the print medium in a ink-jet printer to reduce printing defects in a relatively cold machine. The printer includes a print area heater which in a steady state condition for a given print medium is energized at a first heating level. Under cold start conditions, for an initial plot, the hater is overdriven at a second heating level. Under a multiple-pass printing mode, the hating drive is gradually reduced during an initial portion of the initial plot, until the first heating level is achieved. The heater drive level remains at the first heating level for subsequent plots in a given batch. For single-pass print modes, the heater drive level remains at the second level for the entire initial plot in a batch, and is reduced to the first level for subsequent plots. The printer has a preheater along the medium path, with an unheated area along the path between the print area and the preheater. To further improve print quality when printing along top leading edge margins, the paper is initially advanced until the leading edge is over the print area heater and left for a first time interval. The paper is then retracted to position the paper area initially located over the unheated area of the paper path during the first interval over the preheater. The paper is left in the retracted position during a second time interval, and then advanced to the print area to commence printing operations.

    摘要翻译： 一种用于在喷墨打印机中加热打印介质以减少相对冷的机器中的打印缺陷的方法和装置。 打印机包括打印区域加热器，其在给定打印介质的稳定状态下以第一加热水平通电。 在冷启动条件下，对于初始图，加热器在第二加热水平下过载。 在多遍打印模式下，在初始图的初始部分期间，憎恨驱动器逐渐减小，直到达到第一加热水平。 在给定批次中，加热器驱动电平保持在第一加热水平，用于随后的图。 对于单程打印模式，对于批次中的整个初始绘图，加热器驱动级别保持在第二级，并且将其还原为后续绘图的第一级。 打印机沿着中等路径具有预热器，沿着印刷区域和预热器之间的路径具有未加热的区域。 为了进一步提高打印质量，首先沿着顶部的边缘边缘进行打印，纸张最初会先进行，直到前缘在打印区域加热器上方，并保留第一个时间间隔。 然后在预热器的第一间隔期间，将纸张缩回以将起始位于纸路径未加热区域的纸张区域定位。 纸张在第二时间间隔内处于缩回位置，然后前进到打印区域开始打印操作。