公开(公告)号：US3831179A

公开(公告)日：1974-08-20

申请号：US31600172

申请日：1972-12-18

申请人： BOSCH GMBH ROBERT

发明人： BRILL K ,  GROTHE W

IPC分类号： H04N1/23 ,  B41M5/24 ,  B41M5/18

CPC分类号： B41M5/245

摘要： A layer of a metallic oxide having a heat of formation less than that of aluminum oxide is provided between the paper or synthetic flexible carrier and an aluminum film having a square resistance of about 2.5 ohms. Electric current flows between a stylus and the aluminum layer, but the effect of the current is merely to initiate an aluminothermic reaction between the aluminum and the oxide which, however, is sharply limited to the path of the stylus over the medium as the stylus or the medium is moved, leaving a clearly visible trace.

摘要翻译： 在纸或合成柔性载体之间设置具有小于氧化铝形成热的金属氧化物层和具有约2.5欧姆的方形电阻的铝膜。 电流在触针和铝层之间流动，但是电流的作用仅仅是引发铝和氧化物之间的铝热反应，然而，这在铝和氧化物之间急剧受限于触针在介质上的路径作为触针或 介质被移动，留下清晰可见的痕迹。