Abstract: A stepwise driving force transmission device, comprising a tubular hollow rod (1) having guide holes (11a) passed through the tip end peripheral wall (11) thereof to the inside and outside of the peripheral wall (11), a bush (2) having an inner peripheral surface (2a) fitted to the outer peripheral surface (11h) of the hollow rod (1), a push pin (3) having an outer peripheral surface (3a) fitted to the inner peripheral surface (11e) of the hollow rod (1), and cams (4) installed in the guide holes (11a) of the hollow rod (1) so as to be moved to the inside and outside of the peripheral wall. The stepwise driving force transmission device also comprises locking members (5) inserted from the tip face (11b) of the hollow rod (1) and locked to the cams (4) stored in the guide holes (11a) to allow the movement of the cams (4) to the inside and outside of the hollow rod (1) and prevent the cams from coming out of the guide holes (11a).

Abstract: The configuration is such that there are provided a slide core 21 (21A) disposed to be movable toward and away from a cavity (molding space) 8a and driven at least in the direction toward the cavity 8a according to the closing action of a mold 8, and a guiding member (guiding means) 11 (11A) disposed at least on one mold member 7 of the mold and having a groove-shaped rail part 12a for supporting the slide core 21 in the directions toward and away from the cavity 8a, wherein one member out of the slide core 21 and guiding means 11 is provided with urging means for urging the slide core relative to the guiding member 11 in the direction away from the cavity 8a. This configuration makes it possible to reduce the size and the maintenance cost of the slide core.

Abstract: The configuration is such that there are provided a slide core 21 (21A) disposed to be movable toward and away from a cavity (molding space) 8a and driven at least in the direction toward the cavity 8a according to the closing action of a mold 8, and a guiding member (guiding means) 11 (11A) disposed at least on one mold member 7 of the mold and having a groove-shaped rail part 12a for supporting the slide core 21 in the directions toward and away from the cavity 8a, wherein one member out of the slide core 21 and guiding means 11 is provided with urging means for urging the slide core relative to the guiding member 11 in the direction away from the cavity 8a. This configuration makes it possible to reduce the size and the maintenance cost of the slide core.

Abstract: A light signal receiver comprises a plurality of photo-sensors, a detector for detecting signal levels of light signals sensed by the photo-sensors, a selector for selecting those photo-sensors which result in a proper output signal, and output means for combining the signals sensed by the selected photo-sensors to produce the output signal.

Abstract: An optical information processing method and an apparatus therefor for information recording on or information readout from a recording medium by converging a light beam onto the recording medium, in which the wave form equalization characteristic of the signal upon information recording or information readout is controlled in accordance with the information on the state of focus of the light beam on the recording medium.