| 摘要 |
<p>A ceramic heater (1) includes a ceramic substrate (2) having a heating surface (2a) for supporting and heating an object to be processed, a heating element (6) provided in the substrate (2), and embossed portions (4) on the heating surface (2a) which are to contacted with the objects. The number of the embossed portions (4) per unit area on the heat spot (3) is less than that on the rest of the heating surface (2a). When the average temperature of the heating surface (2a) is raised to reach a target temperature, the heat spot (3) having relatively high surface temperatures exist on the heating surface (2a). <IMAGE> <IMAGE></p> |
