Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1982-09-30
1984-12-04
Herbert, Thomas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
2504831, 2504861, 428216, 428341, 428457, 428464, 4285371, 428690, 428691, B32B 702
Patent
active
044864868
ABSTRACT:
A radiographic image conversion screen comprising a support, a first fluorescent layer formed on the support and consisting essentially of a blue emitting phosphor and a second fluorescent layer formed on the first fluorescent layer and consisting essentially of a green emitting rare earth oxysulfide phosphor. The green emitting rare earth oxysulfide phosphor is represented by the formula: (Ln.sub.1-i, Y.sub.i, Tb.sub.a, R.sub.b).sub.2 O.sub.2 S where Ln is at least one element selected from the group consisting of La, Gd and Lu, R is at least one element selected from the group consisting of Dy, Pr, Yb and Nd, and i, a and b are numbers within the ranges of 0.ltoreq.i.ltoreq.0.35, 0.0005.ltoreq.a.ltoreq.0.09 and 0.0002.ltoreq.b.ltoreq.0.01, respectively.
REFERENCES:
patent: 3294569 (1966-12-01), Messineo et al.
patent: 3389255 (1968-06-01), Takizawa et al.
patent: 3725704 (1968-03-01), Buchanan et al.
patent: 3738856 (1968-03-01), Masi
patent: 3872309 (1975-03-01), De Belder et al.
patent: 4011455 (1977-03-01), Waller et al.
patent: 4039840 (1977-08-01), Shimiya et al.
patent: 4109152 (1978-08-01), Aoki et al.
patent: 4307320 (1981-12-01), Kotera et al.
patent: 4362944 (1982-12-01), Suzuki et al.
Maeoka Hidehiko
Miura Norio
Shimiya Keiji
Shimizu Etsuo
Suzuki Yujiro
Herbert Thomas J.
Kasei Optonix Ltd.
LandOfFree
Radiographic image conversion screens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radiographic image conversion screens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiographic image conversion screens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1582670