| 摘要 |
PURPOSE:To prevent deterioration of the color formation ability of a color former sheet during its shelf life by adding bamboo powder to an applied layer containing a synthetic resin film microcapsule consisting of an electron-donative dye, in the color former sheet. CONSTITUTION:Bamboo powder is added to the applied layer containing a synthetic resin film microcapsule which consists of an electron-donative dye, in a color former sheet. This bamboo powder is obtained by cutting and splitting the bamboo after drying, then crushing it into sawdust after further drying and allowing the sawdust to pass through a 30-mesh sieve. After this process, the sieved sawdust is classified into the 0.1 to 100 mum powder using a pulverizer. To obtain the effect to prevent deterioration of a color formation ability, the mixture of about 20 pts.wt. or less of bamboo powder with 100 pts.wt. of microcapsule is recommended. |
