Abstract: A ceramic joined body includes: a pair of ceramic plates; and an electrode layer that is interposed between the pair of ceramic plates, in which the electrode layer is embedded in at least one of the pair of ceramic plates, and in an outer edge of the electrode layer, a joint surface between the at least one of the pair of ceramic plates and the electrode layer has an inclination with respect to a thickness direction of the pair of ceramic plates and the electrode layer.

Abstract: A ceramic joined body (1) includes: a pair of ceramic plates (2,3) that include a conductive material; a conductive layer (4) and an insulating layer (5) that are interposed between the pair of ceramic plates (2, 3); and a pair of intermediate layers (6, 7) that are interposed between the pair of ceramic plates (2, 3) and the conductive layer (4) and are in contact with the pair of ceramic plates (2, 3) and the conductive layer (4).

Abstract: A ceramic joined body (1) includes: a pair of ceramic plates (2,3) that include a conductive material; and a conductive layer (4) and an insulating layer (5) that are interposed between the pair of ceramic plates (2, 3), a porosity at an interface between the pair of ceramic plates (2, 3) and the insulating layer (5) is 4% or less, and a ratio of an average primary particle diameter of an insulating material which forms the insulating layer (5) to an average primary particle diameter of an insulating material which forms the ceramic plates (2, 3) is more than 1.

Abstract: A composite sintered body including: a metal oxide as a main phase; silicon carbide as a sub-phase; and silicate of a metal element that is included in the metal oxide, in which the average aggregation diameter of the silicate in the field of view of 600 ?m2 at a magnification of 1000 times is 5 ?m or lower.

Abstract: This invention relates to a transparent plastic printing film suitable for offset printing or letterpress printing where an oil ink of the oxidative polymerization type is used. An ink-setting layer composed principally of a rubbery resin and/or styrene resin is provided on at least one side of a transparent plastic film, whereby the transparent plastic printing film permits lithographic offset or the like without losing the transparency of the film. Fine ruggedness may be formed on at least one side of the transparent plastic printing film. The transparent plastic printing film may also be subjected to an antistatic treatment. Sheet-fed printing making use of the above film does not develop blocking, tacking, scratch abrasion, etc. The above-described various properties have been improved further in a transparent plastic printing film provided with an ink-setting layer, which has been formed by coating a mixture of (i) a solution of the rubbery resin and/or styrene resin and (ii) a silica sol.