Abstract: A radiation image storage panel comprises at least a substrate and a phosphor layer overlaid upon the substrate. The phosphor layer contains a binder, a phosphor, and at least one kind of organic phosphorus compound represented by Formula (1): (R)nPO(OM)3−n  (1) in which R represents an alkyl group, an aryl group, or a heterocyclic group, which may be optionally substituted by a substituent; M represents a hydrogen atom, an alkali metal, or —N+(R1)4, where R1 represents an alkyl group having at most two carbon atoms; and n represents an integral number of 1 or 2. The radiation image storage panel exhibits enhanced dispersibility of phosphor particles and a high sensitivity and yields little noise.

Abstract: A radiation image storage panel having an air-tightly closed space formed of two rigid sheets and a frame placed between the sheets and a phosphor layer placed in the closed space, in which the frame has four corners in the form of concave arc or concave polygon of obtuse angles keeps its air-tight sealing structure for a long period of time and is resistant to deterioration of the phosphor layer.

Abstract: Disclosed herein is a radiation image conversion panel that has a phosphor layer.

Abstract: A radiation image storage panel comprises at least a substrate and a phosphor layer overlaid upon the substrate.

Abstract: In a radiation image storage panel having a stimulable phosphor layer of a stimulable phosphor, and a surface protective film, the surface protective film exhibits scattering with a scattering length of 5 to 80 &mgr;m observed at a main wavelength of stimulated emission from the stimulable phosphor.

Abstract: A radiation image storage panel has a composite composed of a transparent support and a stimulable phosphor layer, and a protective film is provided both on the surface of the phosphor layer side of the composite and on the back surface of the support. The scratch resistance of the protective film is higher than that of the surface of the support and the contact angle of the protective film is larger than that of the surface of the support. The protective film on the support side surface can comprise a fluororesin and light-scattering particles, and further a titanate- or aluminate-coupling agent.

Abstract: A radiation image storage panel has a phosphor layer comprising a stimulable phosphor and a binder, in which the binder is composed of a resin containing a thermo-plastic polyurethane elastomer and a radical scavenger. The panel shows excellent durability against both light and repeated conveying.

Abstract: A radiation image storage panel having a stimulable phosphor layer and a protective film composed of a plastic material film and a coated layer of a fluororesin-containing resin composition containing light-scattering fine particles gives a radiographic image of improved quality.

Abstract: A silver halide photographic material comprising a support having at least one pre-fogged direct positive emulsion layer provided on at least one side of the support, wherein silver halide grain formation of the emulsion is carried out in the presence of a silver halide solvent, the emulsion contains at least one of an Rh salt, an Ru salt or a polybromoiridium salt, and at least one compound selected from the group consisting of compounds represented by the following formula (I), (II) and (III) is added to the emulsion while the silver halide photographic material is prepared:R--SO.sub.2 S--M (I)R--SO.sub.2 S--R.sup.1 (II)R--SO.sub.2 S--L.sub.m --SSO.sub.2 --R.sup.2 (III)wherein R, R.sup.1 and R.sup.2 are the same or different, and each represents an aliphatic group, an aromatic group or a heterocyclic group; M represents a cation; L represents a divalent linking group; and m represents 0 or 1.