Depression cathode structure for cathode ray tubes having surfac

Details Depression cathode structure for cathode ray tubes having surfac Depression cathode structure for cathode ray tubes having surfac

1981-12-28

1984-10-23

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

313346R, 264 61, H01J 904

Patent

active

044785909

ABSTRACT:
Depression cathode structures for cathode ray tubes are produced by dispensing liquid cathode material into the depression of a metallic supporting substrate, removing excess cathode material by passing a doctor blade across the substrate surface and over the depression, and drying the cathode layer to a substantially immobile state. The cathode layer may optionally be further shaped prior to substantially complete drying thereof.

REFERENCES:
patent: 3110081 (1963-11-01), Hendriks
patent: 3160780 (1964-12-01), Coppola
patent: 3184636 (1965-05-01), Dore et al.
patent: 3238596 (1966-03-01), Rich et al.
patent: 3257703 (1966-06-01), Coad et al.
patent: 3615901 (1971-10-01), Medicus

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