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:
Dec. 07, 1993
Filed:
Jun. 19, 1992
Haruhiko Sakuma, Hino, JP;
Konica Corporation, Tokyo, JP;
Abstract
A light sensitive silver halide photographic material for the use of X-ray photography, wherein the effective contrast characteristics of the photographic material can be changed as required for the type image being exposed, as a function of the number and disposition of fluorescent intensifying screens. The photographic material has a support carrying first and second emulsion layers on each side thereof. The first layer has a maximum density and sensitivity higher than that of the second layer; the second layer has a density of not more than 0.2 when exposed from the side of the first layer with sufficient irradiation to give the first layer a density of 1.0; and the slope connecting two points corresponding to densities of 0.8 and 1.3 above the fog or baseline on a characteristic curve of the first layer is more than the slope of a line connecting two points of 0.3 and 0.5 above the fog or baseline on a characteristic curve of the second layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile