Process for coating a phosphor slurry on the inner surface of a

Details Process for coating a phosphor slurry on the inner surface of a Process for coating a phosphor slurry on the inner surface of a

1976-04-01

1977-07-12

Esposito, Michael F.

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 72, 427 73, 427202, 427231, 427240, 427372R, B05D 506, B05D 312

Patent

active

040355241

ABSTRACT:
This disclosure depicts a process for forming on an inner viewing surface of a color cathode ray tube having a flangeless faceplate a coating of an aqueous slurry composed of a photosensitized organic binder and a suspension of phosphor particles. The process comprises applying an aqueous pre-wet to the inner surface of the faceplate and, while the surface is still wet, applying a phosphor slurry to the pre-wetted inner surface of the faceplate; and suffusing the slurry across the surface to form a coating thereof. As a result of the pre-wetting of the faceplate surface, the occurrence of radially oriented non-coated areas on the surface is eliminated and the phosphor sedimentation rate is enhanced.

REFERENCES:
patent: 3376153 (1968-04-01), Fiore
patent: 3467059 (1969-09-01), Kornner
patent: 3712815 (1973-01-01), Rohrer
patent: 3940508 (1976-02-01), Wilcox
patent: 3966474 (1976-06-01), Harper

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