Abstract: An open chamber-type X-ray fluorescence analysis apparatus is provided to analyze a large-sized sample located outside the open chamber. The apparatus has a helium inlet provided in the open chamber for injecting helium gas into the chamber to replace gas within the chamber with helium, a film attaching/removing mechanism for covering the opening in the chamber with a film having high transmittance with respect to X-rays, and a gas outlet provided in the chamber for allowing gas to exit the chamber.

Abstract: An X-ray fluorescence analysis apparatus in which a collimator for defining a range of passage of X-rays, can be safely and simply attached and detached by providing a right-hand screw thread for attachment of the collimator to a housing, an X-ray generator, or an X-ray detector, and further providing a left-hand screw thread on a side of the collimator opposite to that of the right-hand screw thread. An attachment jig having a left-hand screw thread corresponding to the left-hand screw thread provided on the collimator is used to attach and detach the collimator.

Abstract: The present invention sets out to provide X-ray fluorescence analysis apparatus having an easily detached protective sheath having a structure where conduction is provided between a core and a shield when the high-voltage connector is open. A pipe-shaped sheath having threading corresponding to a fixing screw connecting to a shield of the high-voltage connector is provided, and a conductor touching with the core is provided at the other end of the sheath. When the sheath is then fitted to the high-voltage connector, the core of the high-voltage connector and the shield conduct.

Abstract: The present invention sets out to provide X-ray fluorescence analysis apparatus having a safely detachable mechanism where a high-voltage cable cannot be removed during application of a high-voltage. A cover with a channel through which a cable passes is provided at an opening of a housing for connecting a high-voltage cable. A mechanism for detecting open and closed states of this cover and cutting off a high-voltage is then provided.

Abstract: The present invention provides an X-ray fluorescence analysis apparatus in which the collimator, which defines a range of passing X-rays, can be attached to and detached from a housing, an X-ray generator, or an X-ray detector. The collimator has a left-hand thread on a side opposite to the thread and being coaxial with the thread, so that it can be attached to and detached from a thread of an object. It is also capable of being attached and detached easily to and from the housing, the X-ray generator, and the X-ray detector with respect to the inner shape of the housing using a cylindrical jig provided with the left-hand thread.

Abstract: The object of the present invention is to provide an open chamber-type X-ray fluorescence analysis apparatus capable of qualitatively and quantitatively analyzing light elements within a sample in a stable manner.

Abstract: An optical recording medium is provided which achieves a higher recording capacity. This optical recording medium includes a base formed of thermoplastic resin which has a thickness ranging from between approximately 0.3 to 1.2 nm, a guide groove formed on the base, at least a reflective film and a phase-change recording layer successively formed on the guide groove, arid a light transmissive layer having a thickness ranging from between approximately 3 to 177 .mu.m. In this optical recording medium, the unevenness .DELTA.t of the thickness of the light transmission layer is set within the range of:.DELTA.t.ltoreq..+-.5.26(.lambda./N.A..sup.4)(.mu.m)wherein N.A. represents a numerical aperture of an optical head device of the optical disk recording and/or reproducing apparatus and .lambda. represents the wavelength of laser light utilized by the optical disk recording and/or reproducing apparatus.

Abstract: An optical information record medium comprising a transparent substrate, an optical information recording layer, and a reflective metal layer. The reflective metal layer is formed of an aluminum-titanium alloy in which the titanium content is between 0.1 and 10 weight %. The medium has improved stability against corrosion due to the improved reflective metal layer.

Abstract: A door-operating apparatus for an analyzer, comprising first and second rails provided on an analyzer body, a movable member provided on said first rail, a slider fixed to said movable member, a sample table and an angle piece provided on said slider, a window frame provided movably on said second rail, a holding member attached to said window frame, and a pivotable link of which ends are supported on said holding member and said angle piece respectively, said slider being moved along said first rail so that said sample table is controlled from the outside.

Abstract: One end portion of a cable comprising a multiplicity of core wires is inserted into a cylindrically shaped electrically conductive member one end of which is flared. A band made of synthetic resin or synthetic rubber or the like is provided on the end portion of the cable, and the cylindrical electrically conductive member, except for flared portion thereof, is pressed into a rectangular shape.