Abstract: A first substrate has anodes and cathodes, and an organic luminous material layer is formed between the anodes and cathodes. A second substrate has first conductive patterns formed on one of sides thereof, and second conductive patterns formed on the other side. The second conductive patterns are electrically connected to the first conductive patterns by throughholes formed in the second substrate, and the first conductive patterns are electrically connected to cathodes. Other second conductive patterns are electrically connected to the anodes. The space between the first and second substrates is hermetically sealed at peripheral portions thereof.

Abstract: A magnetic circuit has a yoke base, a pole formed on the yoke base, an annular magnet mounted on the yoke base, an annular plate having an inclined surface mounted on the magnet. The annular plate has an inwardly downwardly curved sectional shape toward a periphery. A frame for a conical diaphragm is secured to the plate. A plurality of platforms each having a flat surface are formed on the inclined surface, and a plurality of staking projections are formed on the flat surfaces of the platforms. The frame is secured to the plate by staking the staking projections.

Abstract: An insulating substrate having an end opposite to a sheet of subject copy is disposed perpendicularly to the sheet. A plurality of photodetector units are provided on the end of the insulating substrate. Each of the photodetector units has a first electrode film connected to a common electrode disposed on one of the sides of the insulating substrate, a second electrode film connected to one of discrete electrodes disposed on the other side of the insulating substrate, and a photoelectric transducer film interposed between the first and second electrode films.