How do they match: Prepress Technicians and Workers

  • Analyze originals to evaluate color density, gradation highlights, middle tones, and shadows, using densitometers and knowledge of light and color.
  • Examine finished plates to detect flaws, verify conformity with master plates, and measure dot sizes and centers, using light boxes and microscopes.
  • Mount negatives and plates in cameras, set exposure controls, and expose plates to light through negatives to transfer images onto plates.
  • Punch holes in light-sensitive plates and insert pins in holes to prepare plates for contact with positive or negative film.