摘要:
An apparatus for producing silver halide grains of a uniform size wherein the apparatus comprises a mixing chamber comprising a casing of a polygonal-pillar shape within a reaction vessel filled with an aqueous colloid solution in such a manner that the interior of the mixing-chamber is filled with the aqueous colloid solution, where a water soluble silver salt solution and a water soluble halide solution are supplied by way of conduits to the lower end of the mixing chamber to dilute the solution with the aqueous colloidal solution contained in the mixing chamber, first agitation means disposed in the mixing chamber for rapidly agitating to mix and react both reaction liquids to form silver halide grains, and a second agitation means for immediately discharging the silver halide grains into the reaction vessel to ripen the silver halide grains outside of the mixing chamber.
摘要:
A method for detecting radiation image which comprises steps of: causing a radiation image storage panel which comprises a phosphor layer containing a stimulable phosphor to absorb a radiation having passed through an object or radiated from an object; placing said radiation image storage panel and a photosensor composed of numerous photosensitive elements in regular and two-dimensional arrangement together in layers, and irradiating the panel with an electromagnetic wave to release the radiation energy stored in the panel as stimulated emission; and photoelectrically detecting the stimulated emission with said photosensor. A method for detecting radiation image using a radiation image detector which comprises a photosensitive member composed of numerous photosensitive elements and a phosphor layer containing a stimulable phosphor provided thereon is also disclosed.
摘要:
A radiation image storage panel comprising a support and phosphor layers provided thereon which comprises a binder and a stimulable phosphor dispersed therein, characterized in that said phosphor layer include at least two layers of the first phosphor layer provided on the support and the second phosphor layer provided on the side nearer to the front surface of the panel than said first phosphor layer, and that the mixing ratio of the binder to the stimulable phosphor in the first phosphor layer is larger than the mixing ratio of the binder to the stimulable phosphor in the second phosphor layer.
摘要:
A radiation image storage panel having a fluorescent layer which comprises a binder and a stimulable phosphor dispersed therein. Further, the panel has a light-reflecting metallic layer on one side thereof with respect to the fluorescent layer opposite to the side exposed to the stimulating rays for said stimulable phosphor. The panel provides an image of high sharpness.
摘要:
A radiation image is recorded on a stimulable phosphor, and the recorded image is reproduced by utilizing the stimulability of the phosphor. As the phosphor is used at least one of the following phosphors.(a) a copper and lead activated zinc sulfide phosphor ZnS:Cu,Pb).(b) a phosphor included in a group of europium activated barium aluminate phosphors represented by the formulaBaO.xAl.sub.2 O.sub.3 :Eu wherein x is a number satisfying the condition of 0.8.ltoreq.x.ltoreq.10.(c) a phosphor included in a group of divalent metal silicate phosphors represented by the formulaM.sup.II O.ySiO.sub.2 :A wherein M.sup.II is at least one divalent metal selected from the group consisting of Mg, Ca, Sr, Zn and Ba, A is at least one element selected from the group consisting of Ce, Tb, Eu, Tm, Pb, Tl, Bi and Mn, and y is a number satisfying the condition of 0.5.ltoreq.y.ltoreq.2.5.(d) a phosphor included in a group of oxyhalide phosphors represented by the formulaLnOX:zA' wherein Ln is at least one element selected from the group consisting of La, Y, Gd and Lu, X is Cl and/or Br, A' is Ce and/or Tb, and z is a number satisfying the condition of 0
摘要:
A rear projection screen produced by providing surface irregularity directly on at least one side of a light diffusion layer containing at least one light scattering material selected from the group consisting of one or more waxes, one or more crystalline polymers or a mixture thereof.
摘要:
A radiographic intensifying screen comprising a support and a phosphor-containing resin layer provided thereon, in which the void ratio of said phosphor-containing resin layer is reduced in comparison with an ordinarily prepared phosphor-containing resin layer having the same binder-phosphor ratio and formed by a coating procedure conducted under an atmospheric pressure.The void ratio is not more than 85% of the void ratio of the ordinarily prepared phosphor-containing resin layer for a phosphor-containing resin layer which contains a resinous binder and a phosphor in a weight ratio of 1:1 to 1:25, the ratio of 1:25 being exclusive, and the void ratio is not more than 90% for a phosphor-containing resin layer which contains a resinuous binder and a phosphor in a weight ratio of 1:25 to 1:100.
摘要:
A radiation image storage panel comprising a support and a stimulable phosphor-containing resin layer provided thereon, in which the void ratio of said stimulable phosphor-containing resin layer is reduced in comparison with an ordinarily prepared stimulable phosphor-containing resin layer having the same binder-phosphor ratio and formed by a coating procedure conducted under an atmospheric pressure.The void ratio is not more than 85% of the void ratio of the ordinarily prepared stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:1 to 1:25, the ratio of 1:25 being exclusive, and the void ratio is not more than 90% for a stimulable phosphor-containing resin layer in which a resinous binder and a stimulable phosphor are contained in a weight ratio of 1:25 to 1:100.
摘要:
A transmission-type electron microscope using a sensitive two-dimensional sensor in its micrograph-taking section acts as a recording medium for an electron beam. When the sensor is illuminated with an electron beam, it stores the energy of the beam. When the sensor is subsequently illuminated with light, it releases the stored energy as light. In accordance with the invention, at least a portion of the micrograph-taking section includes a member for reducing the amount of x-rays produced or a member for absorbing x-rays to shield the sensor from x-rays.
摘要:
A radiation image read-out apparatus comprises an optical system for scanning a stimulable phosphor sheet carrying a radiation image stored therein by stimulating rays, a light guide member for guiding light emitted by the stimulable phosphor sheet upon exposure to stimulating rays, a light guiding mirror for reflecting the emitted light to the light guide member, and a photoelectric converter for detecting the light guided by the light guide member. The light guiding mirror is provided with a reflection plane which reflects the light emitted by the stimulable phosphor sheet and which does not reflect stimulating rays. Or, a filter for absorbing the stimulating rays reflected by the stimulable phosphor sheet and transmitting the light emitted by the stimulable phosphor sheet is positioned between the scanned portion of the stimulable phosphor sheet and the light guiding mirror.