Sony Corporation

Takahiko Yamakami

Keiji Honda

Katsuhiko Hata

Tsunenari Saito

Kazuyuki Ota

Teruyasu Suzuki

Hisao Ohashi

A method of manufacturing a resistor element, particularly one for use as an arc suppressing resistor in a cathode ray tube which consists in providing an arc suppressing resistor having a resistor core of predetermined resistance covered with an integral ceramic insulating layer, and baking the resistor in a vacuum atmosphere at a vacuum ranging from 1.times.10.sup.-3 Torr to 1.times.10.sup.-7 Torr, a temperature from 250.degree. to 500.degree. C. and a treatment time or more than 30 minutes.

Method of manufacturing a resistor element

A method of manufacturing a cathode ray tube wherein DC and AC voltages are superimposed and applied to a cathode ray tube between a high voltage electrode and a low voltage electrode with the high voltage electrode being at the high voltage side of the DC voltage so as to perform knocking treatment. The superimposed DC and AC voltages may be alternately applied in various manners so as to provide improved knocking of the tube.

Method of manufacturing a cathode ray tube

A resistor for use in a cathode ray tube comprises an insulating plate provided thereon with at least first and second electrode terminals for use respectively with relatively high and low voltages in the cathode ray tube, a coating insulator provided on the insulating plate for covering the same, and a resistive layer provided in a predetermined pattern on the insulating plate to connect therethrough the first and second electrode terminals with each other and to be covered by the coating insulator with such an arrangement that the resistance thereof obtained per unit length on the insulating plate between the second electrode terminal and a high potential difference position between the first and second electrode terminals, where the potential difference between the outer surface of the coating insulator and the resistive layer is to be relatively large in the use of the resistor in the cathode ray tube, is greater than that between the high potential difference position and the first electrode terminal.

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Aichi, Japan

Takahiko Yamakami