Radiation imagery chemistry: process – composition – or product th – Luminescent imaging
Patent
1992-08-13
1994-03-01
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Luminescent imaging
430588, 430576, 430966, 430967, 430567, 430502, G03C 516
Patent
active
052906558
ABSTRACT:
There is disclosed a method for forming an X-ray image formed with less exposure than is customary and having an excellent resolution. The X-ray image can be formed by subjecting a light-sensitive material comprising a support, having provided thereon a light-sensitive silver halide emulsion layer containing a silver halide emulsion sensitized with a sensitizing dye represented by the following Formula (I) on only one side of the support to photographing via a green color emission fluorescent screen with a soft X-ray emitted from an X-ray generating device with a tube voltage of 25.sup.kv to 40.sup.kv. In the characteristic curve represented by a rectangular coordinate constituted by optical density and logarithmic exposure, the average gradation shown by the gradient of a line drawn by connecting the point at which 0.25 is added to the minimum density (hereinafter referred to as Dmin) to the point at which 2.0 is added to Dmin is set at 2.8 to 3.6; the average gradation shown by a gradient of a line drawn by connecting the point at which 0.25 is added to Dmin to the point at which 0.5 is added to Dmin is set at 1.9 or more; and the maximum density is set at 2.8 to 3.3: ##STR1## wherein Formula (I) are as defined in the specification.
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Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
Neville Thomas R.
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