Patent ID: 7965307

Claim:
A thermal head comprising: a plurality of heat generating element rows in which plural heat generating elements are arrayed in a main scanning direction; and a glaze that stores heat generated from the heat generating elements, wherein, the thermal head is configured to record an image on a recording medium by causing the respective heat generating elements to generate heat while the recording medium is conveyed in a sub-scanning direction, the plurality of the heat generating element rows are arrayed in the sub-scanning direction, the glaze includes a ridge portion extending in the main scanning direction, the heat generating element rows being arrayed on the ridge portion, the glaze includes a plurality of convex portions on the ridge portion, the convex portions are arrayed in the sub-scanning direction, the convex portions are formed on an outer sides of the ridge portions respectively, and the heat generating elements are arranged on outer sides of the convex portions, respectively.