DESENSITIZABLE RECORD MATERIAL

摘要

A novel record material is disclosed comprising a substrate bearing microcapsules having nonmeltable walls. The microcapsules contain a chromogen or developer and a photosensitive composition internal thereof, said microcapsules undergoing a change in viscosity upon exposure to actinic radiation. The walls of the microcapsules have an elongation of not more than 1%, and the record material is resistant to heat , measured by not producing any substantial color when placed in a 150.degree.C oven for one minute. Surprisingly, the record material however is capable of forming a color upon application t o the record material of a point source energy input comprising a .DELTA.T of at least 115.degree.C per one millisecond.