Abstract: A contact pressure sensor detects a pressing force applied to a pressed body by a pressing body through a sensor portion disposed between the pressing body and the pressed body, wherein the sensor portion is formed of a knitting yarn including a carbon nanotube yarn, and the sensor portion includes a pressing body contact surface with which the pressing body comes into contact; a pressed body contact surface with which the pressed body comes into contact; knitting yarn intersecting portions formed between the pressing body contact surface and the pressed body contact surface; and void portions formed between the pressing body contact surface and the pressed body contact surface, the void portions being spaces in which the knitting yarn is not disposed.

Abstract: A ceramic circuit board includes an insulating substrate composed of stacked insulating layers of an alumina-based sintered body, internal leads containing Cu embedded in the insulating substrate, and one or a plurality of metal layers containing Cu embedded in the insulating substrate, at least one of the metal layers being located nearer than the internal leads to the surface of the insulating substrate in the stacking direction, wherein at least part of the metal layer overlaps the internal leads in plan view.

Abstract: A ceramic circuit board includes an insulating substrate composed of stacked insulating layers of an alumina-based sintered body, internal leads containing Cu embedded in the insulating substrate, and one or a plurality of metal layers containing Cu embedded in the insulating substrate, at least one of the metal layers being located nearer than the internal leads to the surface of the insulating substrate in the stacking direction, wherein at least part of the metal layer overlaps the internal leads in plan view.

Abstract: A glass-ceramic substrate with improved bonding strength between an insulating and ferrite layer, and method of manufacturing same are disclosed. The glass-ceramic substrate comprises a glass-ceramic layer, a ferrite layer, and interlayer means between the glass-ceramic layer and the ferrite layer. The glass-ceramic layer comprises a glass phase and a glass comprising a first crystal. The ferrite layer comprises a ferrite crystal.

Abstract: A glass-ceramic substrate with improved bonding strength between an insulating and ferrite layer, and method of manufacturing same are disclosed. The glass-ceramic substrate comprises a glass-ceramic layer, a ferrite layer, and interlayer means between the glass-ceramic layer and the ferrite layer. The glass-ceramic layer comprises a glass phase and a glass comprising a first crystal. The ferrite layer comprises a ferrite crystal.

Abstract: A dielectric paste, and a dielectric layer of a capacitor-embedded glass-ceramic multilayer substrate comprise a barium titanate powder and a glass powder made of a glass containing manganese and a rare earth element and having a softening point of not higher than 1000° C. A method of manufacturing the capacitor-embedded glass-ceramic multilayer substrate comprise the steps of preparing a glass-ceramic green sheet, forming a capacitor area including electrode layers and a dielectric layer made of the dielectric paste; fabricating a laminated body by stacking the glass-ceramic green sheets; and sintering the laminate.

Abstract: An apparatus for reproducing information recorded on an optical recording medium comprising a substrate on which a series of pits which have depth of 2.sup.N (N is an integer equal to or more than 2) steps are formed and a reflecting layer formed on the substrate to cover the series of pits. The apparatus includes a light source, a light detecting means for detecting light reflected from the optical recording medium and obtaining a read-out signal, and a level detecting circuit for detecting multiple levels corresponding to the level of the read-out signal by comparing the read-out signal with multiple level detecting windows. The width of the window is set wide at a lower signal level and the width of the window is set narrow at a higher signal level.