| abstract |
A thermosensitive recording medium having a support, a thermosensitive layer provided on the support and capable of forming a color image when heated imagewise, and a protecting layer provided on the thermosensitive layer and containing a pigment and a core-shell resin obtained by polymerizing a vinyl monomer in an emulsion containing acrylonitrile-containing polymer seeds such that a polymer of the vinyl monomer is copolymerized on each of the seeds to form a shell surrounding a core of the seed, wherein the core-shell resin meets with at least one of the following criteria (a) and (b): (a) the glass transition point Tg of the core is at least 15 DEG C.; and (b) the glass transition point Tg of the shell is at least 150 DEG C. The vinyl monomer contains acrylamide and/or methacrylamide. |