Patent ID: 8098268

Claim:
A thermal head comprising: a glass layer having a top side and a backside; a groove section in the backside of the glass layer; a heat generating resistor disposed on the top side of the glass layer and extending along the top side of the glass layer in a first direction; a pair of electrodes on respective ends of the heat generating resistor; and a common electrode section; wherein, a part of the heat generating resistor is exposed between the pair of electrodes and serves as a heat generating section, and at least one of the pair of electrodes has (a) first section extending toward the heat generating section and (b) a second section extending from the first section to the common electrode section, the second section extending away from the heat generating section, the first section having a width in a second direction perpendicular to the first direction that is larger than a width of the second section in the second direction.