Thermal head, printer, and method of manufacturing thermal head

A thermal head comprising:

• a laminated substrate including a support substrate and an upper substrate each comprising a glass material and a recess resides in the surface of the support substrate, the support substrate and the upper substrate in a laminated state so as to enclose the recess, the recess in the laminated substrate defining a cavity portion between bonded portions of the support substrate and the upper substrate;
• a heat generating resistor on a surface of the upper substrate in the laminated substrate at a position opposed to the cavity portion;
• a pair of electrode portions connected to each of both ends of the heat generating resistor, for supplying electric power to the heat generating resistor;
• an intermediate metal layer sandwiched between the support substrate and the upper substrate and bonded thereto in a laminated state, the intermediate metal layer overlying the surface of the support substrate in the bonded portion and an inner wall surface of the recess;
• and
• a surrounding metal layer in contact with the intermediate metal layer and overlying a surface of the support substrate and extending to a surface thereof opposite to the bonded portion of the upper substrate.