Thermal transfer color printer for printing on sheets of paper
    1.
    发明授权
    Thermal transfer color printer for printing on sheets of paper 失效
    热转印彩色打印机,用于在纸张上打印

    公开(公告)号:US4552470A

    公开(公告)日:1985-11-12

    申请号:US554319

    申请日:1983-11-22

    摘要: A thermal transfer color printer is disclosed for printing color images on individual sheets of paper. One sheet of paper at a time is removed from a stack of paper stored in a cassette and this sheet is transported by a reversible platen roller in a first or forward direction at a first predetermined rate. While the sheet of paper is gripped between the reversible platen roller and one or more pinch rollers, slack is removed by a slack removing device. A multicolored ink ribbon with successively arranged color segments also is transported in the first direction at the same predetermined rate. A thermal printhead presses against the reversible platen roller to press the ink ribbon and sheet of paper together as they move in the first direction. Energization of the thermal elements on the thermal printhead by color component signals corresponding to the current color of the ink ribbon causes the particular current color to be thermally and selectively transferred to the sheet of paper. The thermal printhead then disengages the platen roller and the sheet of paper is transported in a set distance in a second direction opposite the first direction, and at a second predetermined rate, in order to repeat the process of thermally transferring other colors to the sheet of paper. During the back and forth movement of the sheet of paper, the reversible platen roller and the pinch rollers continuously grip the sheet of paper.

    摘要翻译: 公开了用于在单张纸上打印彩色图像的热转印彩色打印机。 一次一张纸从存储在盒中的纸堆中取出,该纸以第一预定速率的第一或向前方向由可逆压纸辊输送。 当纸张被夹在可逆压盘辊和一个或多个压紧辊之间时,松弛由松弛移除装置移除。 具有相继排列的色段的多色彩色墨带也以相同的预定速率在第一方向上传送。 热敏打印头压靠可逆压印辊,当墨带和纸张沿第一方向移动时将墨带和纸张压在一起。 通过与墨带的当前颜色相对应的颜色分量信号对热打印头上的热元件的通电使得特定的当前颜色被热选择性地转印到纸张上。 热打印头然后使压纸辊脱离,并且纸张在与第一方向相反的第二方向上以一定的距离传送,并以第二预定速率传送,以便重复将其它颜色热转印到纸张 纸。 在纸张的前后移动期间,可逆压纸辊和夹送辊连续地夹持纸张。

    Thermal transfer color printer with sheet retaining and guiding
structure adjacent platen
    2.
    发明授权
    Thermal transfer color printer with sheet retaining and guiding structure adjacent platen 失效
    热转印彩色打印机,带有保持和引导结构的压板

    公开(公告)号:US5009527A

    公开(公告)日:1991-04-23

    申请号:US834650

    申请日:1986-03-03

    摘要: A thermal transfer color printer for printing color images on individual sheets of paper. One sheet of paper at a time is removed from a stack of paper stored in a cassette and this sheet is transported by a reversible platen roller in a first or forward direction at a first predetermined rate. While the sheet of paper is gripped between the reversible platen roller and one or more pinch rollers, slack is removed by a slack removing device. A multicolored ink ribbon with successively arranged color segments also is transported in the first direction at the same predetermined rate. A thermal printhead presses against the reversible platen roller to press the ink ribbon and sheet of paper together as they move in the first direction. Energization of the thermal elements on the thermal printhead by color component signals corresponding to the current color of the ink ribbon causes the particular current color to be thermally and selectively transferred to the sheet of paper. The thermal printhead then disengages the platen roller and the sheet of paper is transported in a set distance in a second direction opposite the first direction, and at a second predetermined rate, in order to repeat the process of thermally transferring other colors to the sheet of paper. During the back and forth movement of the sheet of paper, the reversible platen roller and the pinch rollers continuously grip the sheet of paper in order to precisely control the position of the sheet of paper to thereby avoid distortion. A complete color image is formed on the sheet of paper by superimposing the multiple colors of the ink ribbon as the sheet of paper and the different colors of the ink ribbon repeatedly move past the selectively energized thermal elements of the thermal printhead.