Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating
Patent
1984-10-09
1985-09-10
Hoffman, James R.
Coating processes
Electrical product produced
Fluorescent or phosphorescent base coating
427 73, 427157, 427160, G01J 158
Patent
active
045405999
ABSTRACT:
An improved X-ray image converter is disclosed which utilizes a phosphor layer of plate-like rare earth oxyhalide phosphor crystals having said phosphor crystals physically aligned to improve light emission from the phosphor layer. More particularly, said phosphor layer is formed with the plate-like crystals being aligned generally parallel to the longitudinal axis of said phosphor layer at both surface regions while the intermediate phosphor crystals are aligned generally perpendicular to said longitudinal axis. Said improvement can be provided during formation of phosphor layer from a liquid suspension by introducing particular velocity gradients in the flow pattern of said liquid suspension.
REFERENCES:
patent: Re28592 (1975-10-01), Rabatin et al.
patent: 3591516 (1971-07-01), Rabatin
patent: 4315979 (1982-02-01), Brines et al.
General Electric Company
Hoffman James R.
Jacob Fred
McDevitt J. F.
Schlamp Philip L.
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