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Job Description and Jobs

Job Description:

  • 1) Tends equipment that forms and prepares aperture masks and display screens for oscilloscope and television picture tubes: Feeds specified sections of sensitized steel between plates in photographic printing chase to flatten sheet to specification.

  • 2) Sets timer for specified exposure and turns on heliarc lamp to imprint pattern of aperture mask from photographic plate onto steel.

  • 3) Verifies alignment of plates, using microscope.

  • 4) Tends furnace that blackens aperture masks and rings.

  • 5) Feeds mask through series of rollers that flatten mask.

  • 6) Positions mask on bed of forming press and lowers die to form mask.

  • 7) Tends processing equipment to clean, dry, and coat phosphor on inside face of display screen.

  • 8) Positions aperture mask and screen on fixture over time-cycled light source to print color-emitting dots on phosphor coating.

  • 9) Starts cycle to expose coating to light through mask aperture.

  • 10) Marks mating screen and aperture mask with matching numbers for future assembly.

  • 11) Fastens screen in holder on conveyor that carries screen through equipment that develops exposed phosphor, removes unexposed phosphor, and dries screen.

  • 12) May be designated according to process as Aperture-Mask Etcher; Mask Former; Screener.




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End Of Job Description for: "DISPLAY-SCREEN FABRICATOR"
DOT:   725.685-010

Job Number: 3024