The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1986
Filed:
Nov. 01, 1983
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
In a radiation image recording system wherein a stimulable phosphor carrying a radiation image stored therein is scanned by stimulating rays to emit light in proportion to the radiation energy stored, and the emitted light is converted to an electric signal which is processed and used to reproduce a visible image in a light-sensitive material, a value within the range of 0.2 to 0.5 and two values at least 0.5 different from each other within the range of 0.4 to 2.6 are selected as the reference optical density values of the reproduced image. An image is once recorded in the light-sensitive material by using reference signals representing the reference values, and the optical densities at the image portions corresponding to the reference values are measured. Differences between the measured values and values on a reference gradation curve are corrected so that the sensitivity is equal to the sensitivity on the reference curve at the portion corresponding to the value selected within the range of 0.2 to 0.5, and the gradient is equal to the gradient on the reference curve with respect to the density value range of 0.4 to 2.6.