| 摘要 |
PURPOSE:To obtain a high-quality pressure-sensitive copying sheet with satisfactory coloring properties and shorts contamination-free by adjusting a specific sheet so that specific conditions can be satisfied and further, adjusting a capsuled ink to specific viscosity. CONSTITUTION:A barrier layer is provided on one surface of an air-permeable sheet with a permeability of 35'' max based on JIS-P-8117 so that the permeability is 50''min. Next, an electron-receptive color developer coated layer is formed on the barrier layer. In addition, a microcapsuled ink which contains a microcapsule of an electron-donative coloring agent and has a viscosity of 15000cps (25 deg.C) max, is provided on the other surface using type printing or offset printing technique. The air-permeable sheet is such as acidic paper, neutral paper or synthetic paper obtained by using the fiber of natural pulp or synthetic pulp. If the permeability is 35''min, the permeable sheet has inferior coloring properties. If the permeability of the barrier layer is not higher than 50'', the sheet shows a higher rate of shorts contamination. If the viscosity is 15000cps min, the sheet indicates inferior coloring properties. |
