Thermosensitive recording medium, thermosensitive recording medium producing method, and article

A thermosensitive recording medium, comprising:

• a transparent base material;
• a thermosensitive recording layer over the transparent base material;
• and
• a barrier layer over the thermosensitive recording layer,
• wherein the barrier layer comprises hollow particles and a binder resin, and
• wherein when thermal energy is applied to the thermosensitive recording layer via the transparent base material, the thermosensitive recording layer develops a color.

A thermosensitive recording medium producing method, comprising:

• forming a thermosensitive recording layer over a transparent base material;
• and
• forming a barrier layer that comprises hollow particles and a binder resin over the thermosensitive recording layer,
• wherein a rate of hollowness of the hollow particles represented by Formula below is 45% or higher,
• rate of hollowness (%)=[(volume of hollow portion)/(volume of hollow particle)]×100.