| 主权项 |
1. A heater comprising:
a ceramic structure; a heat-generating resistor embedded in the ceramic structure; a conductor line embedded in the ceramic structure so as to be connected to the heat-generating resistor; a through-hole conductor disposed in the ceramic structure, one end of the through-hole conductor being connected to the conductor line and the other end of the through-hole conductor being led out to a surface of the ceramic structure; and an electrode pad disposed on the surface of the ceramic structure so as to cover the through-hole conductor, the electrode pad being connected to the through-hole conductor, the through-hole conductor having a protrusion which protrudes outwardly beyond the surface of the ceramic structure. |
