Reverse-printing method for producing cathode-ray-tube-screen structure

Abstract From the Canadian patent

In the method disclosed a supporting surface, such, as the inner surface of the faceplate of the tube is coated, with a photosensitive polymeric film containing about 5 to 80 weight percent of at least one member of the group consisting of certain diol ethers and diol alkanes. Then the film is exposed to a light image to produce regions of greater solubility and regions of lesser solubility. The film regions of greater solubility are removed, and then the entire faceplate with its regions of less solubility is overcoated with a layer containing particles of screen structure material. The retained film regions and the overcoating thereon are removed leaving the screen structure adherent in …