| 摘要 |
PURPOSE: To prevent an early coloring of a copy sheet by coating a bas sheet with an extracted and isolated soy protein polymer from soy or incorporating the polymer in a microcapsule paint. CONSTITUTION: A base sheet is neutral- or alkaline-sized with an alkyl ketene dimer. Its one surface is covered with a pressure destroyable microcapsule paint and the other surface is covered with a developer paint. The base sheet is treated with a soy protein polymer solution, and then covered with the microcapsule containing the polymer solution. Accordingly, a preventing effect of an early coloring of the pressure sensitive copy sheet can be performed. |
