| 摘要 |
PURPOSE: To provide an efficient, precisely controlled apparatus for and method of heat fusing an image onto a receiver element such as a slide transparency. CONSTITUTION: A light chamber 24 integrates an area light source emitting black body radiation at a given color temperature and directs it to the lower end of an opening 25. A receiver element 10 with an image I to be fused is positioned adjacent to the lower end of the opening 25, and the light sources 30, 32 are turned on and off by an electric timing and control circuit. The electric circuit controls precisely the color temperature of the light sources. The method includes the steps of controlling the color temperature of the light sources 30, 32 in accordance with optimum energy absorption by the image I and by the surface of the receiver element 10, applying the light energy with a controlled intensity pattern to obtain highly uniform temperature rise over the area of the image I including its edges, and measuring the rise in temperature produced by the light and turning the light source off as soon as a desired image I fusing temperature at the surface of the receiver element 10 is reached such that uniform fusing of the image I without distortion of the receiver element 10 is obtained. |
