Signedon front of package: EASTMAN X-RAY / INTENSIFYING / SCREENS / One Pair / MADE IN ROCHESTER, N.Y., U.S.A. BY / EASTMAN KODAK COMPANY / TRADE MARK / REG. U.S. PAT. OFF. / PATENTS U.S.A. 1, 532,782, 1,532,783, 1,532,795;
on side of package: Fine Grain EASTMAN INTENSIFYING SCREEN;
Inscribedon front of package, stamped: SINGLE / FRONT SCREEN / SINGLE;
on screen: PROPERTY OF / THE UNITED STATES ARMY / FINE GRAIN / SINGLE / FRONT SCREEN / 2859 (number will vary for each screen)
FunctionThese screens are used to intensify images on plates or film produced by X-rays. According to one of the patents (#1,532,782), "among the objects of this invention is the production of a screen which has a high intensifying value, which has surfaces capable of being cleaned without injury, which is impervious to moisture, which mechanically is not fragile, in which the layer containing the fluorescent material is well protected from injury, which is flexible and the opposite sides of which are so surfaced as to be readily distinguishable by touch or sight in a dark-room."
For the Fluorescent Screen and Method of Making Same patent #1,532,795 see here.
Primary SourcesThe three U.S. Patents associate with this object can be found below:
For the Fluorescent Screen patent 1,532,782, see here.
For the Fluorescent Screen patent 1,532,783, see here.
For the Fluorescent Screen and Method of Making Same patent 1,532,795 see here.
Related WorksIf you are interested in this object, you may want to take a look at: Bettyann Kevles, Naked to the bone: medical imaging in the twentieth century (New Brunswick, NJ: Rutgers University Press, 1997).