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Method of making a viewing screen structure for a cathode-ray tube

  • US 4,729,907 A
  • Filed: 02/24/1987
  • Issued: 03/08/1988
  • Est. Priority Date: 02/24/1987
  • Status: Expired due to Term
First Claim
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1. In a method of making a viewing screen structure for a cathode-ray tube having a faceplate panel, a viewing screen on a portion thereof and a metal layer on said viewing screen, the steps subsequent to producing said metal layer comprising(A) preheating said panel in a preheat oven,(B) conveying said heated panel to a tilt station by means of a transport device.(C) tilting said panel to a 60°

  • ±

    10°

    angle relative to a horizontal plane.(D) loading said tilted panel onto a carrier.(E) advancing said carrier and said guns being perpendicular to said panel by means of said transport device in a first direction through a spray assembly including a spray booth and a plurality of spray guns mounted on a reciprocating device which is parallel to said carrier, said reciprocating device moving said spray guns in a second and a third direction, said second and third direction being different from said first direction,(F) activating and deactivating one of said spray guns to deposit on said metal layer a barrier coating of a volatilizable film-forming material.(G) and sequentially activating and deactivating the remaining spray guns to deposit on the barrier-coated metal layer multiple coatings of a heat absorptive overcoating.

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