| 摘要 |
PURPOSE:To enhance the preservability and thermal color forming properties by using an inorg. wall material microcapsule containing a base substance or a substance capable of being converted to a base substance in a thermal recording material. CONSTITUTION:In a copy method using a diazo type recording material utilizing the formation of a color due to the reaction between a photosensitive diazo compd. and a coupling component and a thermal developing type wherein a component producing a base by heating is added to a constitutional system, an inorg. wall material microcapsule including or adsorbing a base substance or a substance capable of being converted to a base substance is added. This microcapsule can be stably held at the normal temp. and is made basic by a heating means to be capable of enhancing thermal sensitivity and image density and has excellent preservability. As the base substance or the substance capable of being converted to the base substance, a compd. showing a non- volatile liquid state, having an m.p./decomposition point of 240 deg.C, or lower and adjusted to 85-140 deg.C by the co-melting with a co-melting agent is used. |
