In recent years, heat-sensitive microcapsule technology which has unique merits such as high image resolution, low cost, pollution-free, easy to produce and store has made great progress in the field of information recording. In this paper, two main types of heat-sensitive microcapsule technology for information recording——photographic fixing type and non-photographic fixing type, are summarized. The preparation process of recording layer is introduced,and the factors which affect granularity distribution a...