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1. 发明授权

US5017943A Thermal transfer type color printer 失效
标题翻译：热转印式彩色打印机
公开(公告)号：US5017943A
公开(公告)日：1991-05-21
申请号：US282302
申请日：1988-12-09
申请人： Hiromitsu Ogita , Akikazu Toida
发明人： Hiromitsu Ogita , Akikazu Toida
IPC分类号： B41J17/12 , B41J35/18
CPC分类号： B41J35/18 , B41J17/12
摘要： In a thermal transfer type color printer, an ink film on which plural color inks are sequentially painted in its longitudinal direction is sequentially transported forward between an ink film supply roll and winding roll, while a printing paper is repeatedly transported forward and backward in order to print out a color image by overlapping plural color inks. In color printing, the printing paper and ink film are partially overlapped and wound around a platen roller, and a thermal head is pressed against the platen roller by sandwiching the ink film and printing paper therebetween so that the thermal head transfers the color inks on the printing paper. In order to prevent wrinkles from being formed on the ink film, tension applying means applies tension force to the ink film by temporarily controlling or stopping revolution of the ink film supply roll. In addition, such tension force is also applied while the printing paper is transported backward, so that printing start position of each color ink is accurately coincided with printing position of the thermal head. Thus, a desirable color image can be printed out without color dislocation and without forming un-transferred portions thereof.

2. 发明授权

US4707703A Method of performing thermal multicolor printing 失效
标题翻译：执行热色彩打印的方法
公开(公告)号：US4707703A
公开(公告)日：1987-11-17
申请号：US883127
申请日：1986-07-08
申请人： Akikazu Toida , Satoshi Iwata , Fumio Takahashi , Takanobu Mimura
发明人： Akikazu Toida , Satoshi Iwata , Fumio Takahashi , Takanobu Mimura
IPC分类号： B41J35/18 , B41M5/34 , G01D15/10
CPC分类号： B41M5/345 , B41J35/18
摘要： A method of thermally printing a multicolor image on a print paper is disclosed. With this method, a lengthy multicolor image can be printed on a paper over a plurality of pages of a length determined by a length of each ink zone of an ink ribbon. First, the ink ribbon is set over a platen roller with the paper being interposed therebetween, the ink ribbon having plural groups of ink zones, the ink zones of each group carrying a plurality of heat-dissolving inks of different colors, respectively. One of the ink zones is positioned at a printing position where a thermal head contacts with the platen roller through the ink ribbon and paper. The thermal head is then activated in accordance with image data stored in a memory, and the ink ribbon and paper are advanced to effect transfer of ink so that one of color component images of the image is printed on the paper. The ink ribbon and paper are then advanced by a predetermined distance to separate the paper from the ink ribbon. The paper is then backwardly moved by a distance equal in length to the total advance of the paper effected in the transferring of ink and the separation of paper. The above operation is cyclicly carried out with respect to the other ink zones to form the multicolor image on the paper without effecting the backward movement in the final cycle. If image data is still present in the memory or if a command for causing the print operation of the image to continue is received, the paper is backwardly moved by a distance substantially equal in length to the advance of paper in the final separation of the paper.
摘要翻译：公开了一种在打印纸上热打印多色图像的方法。通过这种方法，可以在由墨带的每个墨水区域的长度确定的长度的多个页面上的纸张上打印冗长的多色图像。首先，墨带被设置在压纸辊上，纸张介于其间，墨带具有多组墨区，每组的墨区分别带有多种不同颜色的热溶性油墨。一个油墨区域位于打印位置，其中热敏头通过墨带和纸与压纸辊接触。然后根据存储在存储器中的图像数据激活热敏头，并且墨带和纸张前进以实现墨的传送，使得图像的一个颜色分量图像被打印在纸上。然后将墨带和纸张前进预定距离以将纸与墨带分开。然后，纸张的长度相等于在转印墨水和纸张分离中纸张的总进给量的距离。上述操作相对于其它油墨区循环地进行，以便在纸上形成多色图像，而不会在最后的循环中产生向后的移动。如果图像数据仍然存在于存储器中，或者如果接收到用于使图像的打印操作继续的命令，纸张在纸张的最后分离中向后移动距离大致相等于纸张的距离。

3. 发明授权

US4955736A Method and apparatus for energizing thermal head in accordance with dot pattern coincidence tables 失效
标题翻译：根据点图案符合表激励热敏头的方法和装置
公开(公告)号：US4955736A
公开(公告)日：1990-09-11
申请号：US310157
申请日：1989-02-14
申请人： Satoshi Iwata , Akikazu Toida , Fumio Takahashi
发明人： Satoshi Iwata , Akikazu Toida , Fumio Takahashi
IPC分类号： B41J2/365 , B41J2/38
CPC分类号： B41J2/365 , B41J2/38
摘要： The image data including a grid pattern to be printed by a thermal printer line by line is stored for three lines of dots in a plural line buffer, and the image data is scanned by a window frame of an inverted T-shape which covers the three lines. When a dot arrangement extracted by the window frame including an object dot and its surrounding dots coincides with a predetermined window frame pattern defined in an intermediate table, an address representing the dot arrangement is convertred into an intermediate code by the intermediate table. The intermediate code indicates the amount of heating energy to be supplied to a heating element corresponding to the object dot in order to preheat when the area of the object dot is a non-printing area, or to heat additionally when this area is a printing area, thereby to prevent a thin or broken portion from appearing in the printed pattern line.

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