| 摘要 |
PURPOSE:To obtain an image having two colors; bright chromatic color and black color when projected to an overhead projector by forming the chromatic color toner image on a transparent film, then coating a transparent resin soln. consisting of a solvent having insolubility with a toner and transparent resin having solubility in the solvent to the surface of the toner image in a desired part. CONSTITUTION:After the chromatic color toner image is formed on the transparent film, the transparent resin soln. consisting of the solvent having insolubility with the toner and the transparent resin having solubility in the solvent is coated to the surface of the toner image in the desired part. The surface of the toner image coated with the transparent resin soln. is smooth and has good light transparency and the projected image has the chromatic color intrinsic to the toner. On the other hand, the toner image to which the transparent resin soln. is not coated has the rugged surface and since light is scattered or irregularly reflected by such surface, the projected image is black. The OHP original which is obtainable with one kind of toner and one time of copying operation and has the image of the two colors; the chromatic color at the point desired to be selectively and partially stressed and black at the other part is thereby formed. |
