Fluorescent screen forming method, fluorescent screen...

Details Fluorescent screen forming method, fluorescent screen... Fluorescent screen forming method, fluorescent screen...

2007-02-20

2007-02-20

McPherson, John A. (Department: 1756)

Radiation imagery chemistry: process, composition, or product th

Producing cathode-ray tube or element thereof

C430S026000, C427S064000, C427S068000, C427S157000, C156S391000, C156S443000, C156S459000, C156S468000

Reexamination Certificate

active

10479156

ABSTRACT:
The present invention relates to a fluorescent screen forming method, a fluorescent screen forming apparatus and a cathode-ray tube. In the fluorescent screen forming method according to the present invention, a transfer roller lowers a transfer sheet to somewhere above the inner surface of the panel and the transfer roller moves up to the end edge positions of the inner surface of the panel, whereafter the transfer roller moves downwards onto the end edges of the inner surface of the panel in unison with the transfer film to start pressing the transfer film. Therefore, the transfer roller can reach the end edges of the panel, and hence component layers of a fluorescent screen can be transferred up to the end edges of the inner surface of the panel. A fluorescent screen forming apparatus according to the present invention includes a transfer film supply means, a transfer roller, and a control means, wherein operations of the above-mentioned transfer method are executed. As a result, it becomes possible to form a highly-reliable fluorescent screen. Further, a cathode-ray tube according to the present invention includes the fluorescent screen that has been formed by using the above-described transfer method. Thus, it is possible to provide a high-reliable cathode-ray tube of which the effective screen is large. Furthermore, when cathode-ray tubes are manufactured by using the above-described transfer method, the cathode-ray tubes can be produced more inexpensively.

REFERENCES:
patent: 5418075 (1995-05-01), Utsumi
patent: 2002/0024287 (2002-02-01), Miura et al.
patent: 5-234508 (1993-09-01), None
patent: 8-55578 (1996-02-01), None
patent: 2001-079467 (2006-03-01), None
English language abstracts and computer-generated translation of JP 8-055578, Feb. 1996.
International Search Report dated Sep. 17, 2002.

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