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    • 6. 发明授权
    • Thermal-transfer-type color printer having a feed roller with micro
projections
    • 热转印型彩色打印机具有带微型投影的进给辊
    • US5645361A
    • 1997-07-08
    • US643403
    • 1996-05-06
    • Susumu MitsushimaHayami SugiyamaHitoshi NakagawaHiromitsu OgitaMinoru YamakuniKenichi KawaharaShigeyuki KawamuraKazuhiro Tsuji
    • Susumu MitsushimaHayami SugiyamaHitoshi NakagawaHiromitsu OgitaMinoru YamakuniKenichi KawaharaShigeyuki KawamuraKazuhiro Tsuji
    • B41J2/325B41J2/525B41J13/076
    • B41J13/076B41J2/325B41J2/525
    • In a thermal-transfer-type color printer, an ink ribbon and a paper are sandwiched between a thermal head and a platen roller so that a specific image is transferred onto the paper in a specific color. The platen roller is made by a rubber material which has a certain degree of hardness. On the surface of the ink ribbon, plural colors of ink are sequentially and repeatedly painted. Hence, after transferring an image onto the paper in one color, the paper is moved backward; and then, another image is transferred onto the paper in another color. Thus, a multi-color printing is performed. In order to avoid a color shade or an printing error, in which a printing position of one-color image does not accurately match with a printing position of another-color image, the paper should be accurately moved forward and backward. In order to do so, the thermal-transfer-type color printer provides a precise paper-feed mechanism which comprises a pinch roller and a paper-feed roller. Around a surface of the paper-feed roller, micro projections are formed in predetermined size and shape, so that the paper is certainly held between the pinch roller and paper-feed roller. The micro projections can be formed at a selected surface area of the paper-feed roller. Those micro projections are formed by carrying out an etching process using a masking pattern formed at a certain surface area of the paper-feed roller.
    • 在热转印型彩色打印机中,墨带和纸被夹在热敏头和压纸辊之间,使得特定图像以特定颜色转印到纸上。 压辊由具有一定硬度的橡胶材料制成。 在墨带的表面上,依次重复地喷涂多种颜色的墨水。 因此,在以一种颜色将图像转印到纸上之后,纸张向后移动; 然后,另一个图像以另一种颜色转印到纸上。 因此,进行多色打印。 为了避免单色图像的打印位置与另一种彩色图像的打印位置不准确匹配的色调或打印错误,纸张应该被准确地向前和向后移动。 为了这样做,热转印型彩色打印机提供精确的进纸机构,其包括夹送辊和送纸辊。 在供纸辊的表面周围,以预定尺寸和形状形成微突起,使得纸张肯定地保持在夹送辊和送纸辊之间。 微型突起可以形成在给纸辊的选定的表面区域。 通过使用形成在造纸辊的某一表面积处的掩模图案进行蚀刻工艺来形成这些微突起。