Abstract: A radiographic image conversion panel includes: a support; and at least one photostimulable phosphor layer provided on the support, wherein at least one layer of the photostimulable phosphor layers is formed by a photostimulable phosphor, and an amount of an activation metal atom at an end of a photostimulable phosphor crystal and an amount of an activation metal atom in the vicinity of the support satisfy a specific formula.

Abstract: A radiographic image conversion panel including a support; and at least one photostimulable phosphor layer provided on the support. The layer has a film thickness of 50 &mgr;m to 1 mm, and has not less than two luminescence wavelength peaks between 350 nm and 450 nm.

Abstract: A radiation image converting panel comprising a support having thereon a stimulable phosphor layer comprising a polymer and a stimulable phoshor produced by sublimation of a CsBr:Eu precursor, the stimulable phosphor layer having a thickness of 50 &mgr;m to 1 mm, wherein the stimulable phosphor has a spherical shape.

Abstract: A radiation image conversion panel is disclosed, comprising on a support at least one stimulable phosphor layer comprising a stimulable phosphor, wherein the stimulable phosphor layer is a layer of vapor-deposited stimulable phosphor having a thickness of 50 &mgr;m to 20 mm, and the support exhibits a thermal conductivity of 0.1 to 20 W/mK. A preparation method thereof is also disclosed.

Abstract: A radiation image conversion panel is disclosed, comprising on a support a stimulable phosphor layer comprising a stimulable phosphor, wherein the stimulable phosphor layer is formed by vapor deposition on the support which is comprised of a polymer material. A preparation method thereof is also disclosed.

Abstract: A radiation image conversion panel is disclosed exhibiting superior homogeneity of an activator in a phosphor layer and enhanced luminance and improved sharpness, comprising on a support at least one phosphor layer, wherein the phosphor layer comprises a stimulable phosphor and is formed by a vapor deposition process so that the phosphor layer has a layer thickness of 50 &mgr;m to 1 mm, and the phosphor layer exhibits a pH between 0 and 7. There is also disclosed a preparation method of the radiation image conversion panel.

Abstract: A radiation image converging panel comprising a support having thereon a stimulable phosphor layer produced by a vapor phase method so as to have a thickness of 50 &mgr;m to 10 mm, wherein the stimulable phosphor layer comprises:(i) a stimulable phosphor; and (ii) an alkaline metal compound or an alkaline earth metal compound each having a different crystal structure from the stimulable phosphor, and an amount of the alkaline metal compound or the alkaline earth metal compound being 10 to 1000 ppm by weight based on the total weight of the stimulable phosphor layer.

Abstract: A method for preparing a rare earth activated alkaline earth metal fluorohalide stimulable phosphor represented by formula (Ba1−xM2x)FBryI1−y:aM1, bLn, cO is discloded, comprising the steps of (a) preparing an aqueous mother liquor containing BaX2 of not less than 2.0 mol/l and a halide of Ln, (b) adding an aqueous solution containing an inorganic fluoride of not less than 5 mol/l to the mother liquor while maintaining a temperature of at least 50° C. to form a crystalline precipitate of a precursor of the stimulable phosphor, (c) separating the precipitate of the precursor from the mother liquor, and (d) calcining the separated precipitate.

Abstract: A radiation image conversion panel superior in luminance and sharpness is disclosed, comprising a support having thereon a stimulable phosphor layer containing a stimulable phosphor and a protective layer, wherein the stimulable phosphor layer exhibits a density of not less than 3.00 g/cm3, the stimulable phosphor layer being provided between the support and the protective layer.

Abstract: A radiation image conversion panel comprising a support having thereon a phosphor layer containing a binder and a stimulable phosphor, wherein, when the phosphor layer is excited by being exposed to light at a maximum excitation wavelength (.lambda.1) of the phosphor, a maximum peak intensity of instantaneous emission (Int.) emitted from the phosphor layer satisfies the following:500.ltoreq.Int..ltoreq.5000provided that the Int. is a maximum emission intensity at a wavelength within the range of 185 to 800 nm, except for wavelengths of .lambda.1 and 2.times. .lambda.1, and the Int. being expressed as a relative value, based on a peak intensity of Raman scattering of water excited with light at a wavelength of 350 nm being 1.

Abstract: A stimulable phosphor is disclosed, comprising a rare earth activated alkaline earth metal fluorohalide stimulable phosphor, wherein the rare earth of the phosphor is a rare earth metal selected from the group consisting of Eu, Ce and Gd and the content of the rare earth metal in the surface portion of the particles of the stimulable phosphor being less that in a central portion of said particles. Disclosed is also a radiation image conversion panel comprising a support having thereon a phosphor layer containing the stimulable phosphor.

Abstract: Disclosed is a magnetic recording medium which comprises;(a) a non-magnetic support; and provided thereon, in sequence(b) a conductive layer containing carbon black preferably with a DBP absorption of 100 cc/.sub.100g or more, an average particle size of 5 to 30 microns and a pH of less than 5; and(c) a magnetic layer;(I) containing tabular barium ferrite magnetic particles in each of which the axis of easy magnetization is substantially perpendicular to the plane surface and 7 to 30 parts by weight of alpha alumina; and 0.1 to 5 parts by weight, per 100 parts by weight of said magnetic particles, of carbon black with an average particle size of 40 to 300 m.mu.; and(II) is formed on said conductive layer by the wet-on-wet method; a magnetic recording medium according to this invention is improved both in durability and electromagnetic conversion characteristics.