Abstract: A rubber stopper for a vial comprising a body member 1 and a sheet of polyethylene 3 having an average molecular weight of 1,300,000 to 8,000,000, a surface being contacted with an inner surface of a mouth and a liquid medicine, or a top surface 1b of which is covered. The molecular chains of polyethylene are partially ramified by heat to be branched and partially crosslinked with a rubber of the body. Therefore, adhesion of them is high and a smoothness of the surface of the sheet portion is improved.

Abstract: A method of calibrating a CCD camera comprising those sequential processes comprises steps of shifting a spot light source held by a positioning device, in front of a fixed CCD camera between two remote points on a visual line in order that light beam in the center of the light source can be incident upon predetermined picture element of a solid sensor built in the CCD camera, computing angles between a plurality of visual lines generated by shifting the light source and the optical axis of the CCD camera based on position data related to the positioning device, and calibrating the corresponding relationship between the angle of light beam incident upon the CCD camera and the predetermined picture elements built in the solid sensor.

Abstract: A self-illuminating measurable-point member includes; a light source, a fine through-hole which permits light from the light source to permeate therethrough, and a diffusible member which diffuses light permeating the fine through-hole. Light from the light source is condensed via the fine through-hole and diffused via the diffusible member.

Abstract: A method for producing a rubber stopper for a vial, a leg portion side of which is covered with a synthetic resin film. The producing method comprises (i) a primary forming step of piling a synthetic resin film 1 resistant to medicines or medical chemicals onto an unvulcanized rubber sheet 2, and forming by pressing and heating them between the molds (A, B), (ii) a secondary forming step of covering the primary formed article from the leg side of the primary formed article with a half-vulcanized rubber sheet having a hole 10 of which diameter is the same as that of a root portion of the leg portion 4 of the primary formed article and forming by pressing and heating it by means of a pair of molds, and (iii) a step of cutting and removing a flash around the resulting secondary formed article. A rubber stopper and a synthetic resin sheet being laminated can be formed at one time.