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:
Sep. 23, 2003
Filed:
Jan. 23, 2002
Yasuo Iwabuchi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The present invention provides a method for producing a rare earth activated, alkaline earth metal fluorohalide photostimulable phosphor which is expressed by a basic composition formula (Ba M )F(Br I ):zLn, the method comprising the steps of: calcining a precursor of the rare earth activated, alkaline earth metal fluorohalide photostimulable phosphor to obtain a calcined product; and annealing the calcined product so that the following annealing conditions are met: (1) T −600° C.≦Ta≦T −300° C., wherein Ta is the annealing temperature (° C.), and T is the melting point (° C.) of a host crystal; and (2) 10 ≦N×ta≦1, wherein ta is the processing time (in minutes), and N is the number of oxygen moles/the number of phosphor moles.