Abstract: Disclosed are a clear aqueous solution of diclofenac sodium dissolved in a mixed solvent of a fatty acid dialkylolamide and water; an anti-inflammatory analgesic composition excellent in percutaneous absorption, which comprises the clear aqueous solution and a higher unsaturated aliphatic alcohol contained in the solution; and a self-adhesive cataplasm comprising a cataplasm base and the clear aqueous solution, polybutene and gelatin added in the base. The clear aqueous solution of diclofenac sodium contains, in particular, diclofenac sodium, a fatty acid dialkylolamide and water at a ratio falling within a hexagonal region formed by linking the points A, B, C, D, E and F in the figure.

Abstract: In the photo-detecting device, the light receiving surface of the light receiving element is divided into four sections A, B, C, D in the direction of tracking. To detect any tracking error, the quantities of received light on these four light receiving sections are used to calculate {(A+B)-(C+D)}-.alpha.{(A-B)+(C-D)}, where .alpha. is an adjustable value such as a variable resistance. Since this provides a true tracking error which does not include a dc offset, it is possible to make a correct adjustment of the tracking.

Abstract: The light receiving element of the photo-detecting device of this invention has its light receiving area formed smaller than the diameter of a beam reflected from an optical information recorded disc. This makes it possible for the tracking error signal to be taken from a central area of the beam spot where the light intensity is high. This minimizes the dc offset caused by misalignment between the objective lens and the beam axis. The light receiving surface of the element is divided into at least four sections along a line at 45 degrees to the direction of tracking. A difference is taken between the light quantities received by two divided light receiving surfaces disposed perpendicular to the tracking direction. This differential signal allows adjustment to be made of an angle between the disc and the photo-detecting device in the direction perpendicular to the tracking direction.

Abstract: The light receiving surface of the light receiving element, which receives reflected light from an information recorded disc, is divided into sections along lines passing through the center of the surface which run parallel to and perpendicular to the direction of tracking and which also run at an angle of 45 degrees to the first two lines. The tracking errors are detected either by a push-pull method or a heterodyne method. The two methods are combined and alternately switched into operation depending on whether information is being written into or read from the information recording disc. The push-pull method uses a pair of opposing, divided light receiving surfaces disposed in the direction of tracking and the heterodyne method uses two pairs of opposing, divided surfaces disposed diagonally or at an angle of 45 degrees to the direction of tracking.

Abstract: An optical disk player having improved disk loading and optical pickup adjusting mechanisms. In accordance with one aspect of the invention, an optical disk loading device is disclosed in which rollers are inserted into a guide groove on a side face of a tray holding the optical disk thereon. The roller has a spherically expansive portion formed in the inserting portion into which the roller is inserted into the guide groove. In accordance with another aspect of the invention, there is disclosed a disk loading device for an optical disk reproducing apparatus in which the elevating member for raising and lowering the tray is disposed on only one side of the tray and the tray can be stably moved horizontally and vertically, while at least the lower half of the tray is left open and is available for the mounting of other components such as electronic circuits.

Abstract: A photographic sheet film feeding device has a film loading section receiving sheets of film contained in an internally loaded bag in a light-tight condition and loading the same, a cutter mechanism for cutting and unsealing the lower end of the internally loaded bag, and a film discharging means for raising the internally loaded bag and a U-shaped doubling plate covering the two sides and the top edge of the film sheets in order to allow discharge of the sheets of film contained in the bag from the unsealed and cut portion of the internally loaded bag.