# Prepress Technicians and Workers > Format and proof text and images submitted by designers and clients into finished pages that can be printed. Includes digital and photo typesetting. May produce printing plates. - Code: 51-5111.00 (O*NET-SOC; SOC 2018 51-5111) - Family: [Production](https://foundation.org.ai/occupations#family-51), one of its 114 occupations - Tasks: 15 tasks (7 core and 8 supplemental) - Page: https://foundation.org.ai/occupations/51-5111.00 - JSON: https://foundation.org.ai/data/tasks/51-5111.00.json ## What the work is made of 1. Generate prepress proofs in digital or other format to approximate the appearance of the final printed piece. Core task · Task 20927 · Rated by 97 people who do the job, July 2016 2. Proofread and perform quality control of text and images. Core task · Task 20928 · Rated by 97 people who do the job, July 2016 3. Enter, position, and alter text size, using computers, to make up and arrange pages so that printed materials can be produced. Core task · Task 10403 · Rated by 96 people who do the job, July 2016 4. Perform "preflight" check of required font, graphic, text and image files to ensure completeness prior to delivery to printer. Core task · Task 20929 · Rated by 97 people who do the job, July 2016 5. Operate and maintain laser plate-making equipment that converts electronic data to plates without the use of film. Core task · Task 10405 · Rated by 97 people who do the job, July 2016 6. Enter, store, and retrieve information on computer-aided equipment. Core task · Task 10402 · Rated by 96 people who do the job, July 2016 7. Maintain, adjust, and clean equipment, and perform minor repairs. Core task · Task 10404 · Rated by 97 people who do the job, July 2016 8. Operate presses to print proofs of plates, monitoring printing quality to ensure that it is adequate. Supplemental task · Task 10407 · Rated by 97 people who do the job, July 2016 9. Select proper types of plates according to press run lengths. Supplemental task · Task 10425 · Rated by 95 people who do the job, July 2016 10. Examine finished plates to detect flaws, verify conformity with master plates, and measure dot sizes and centers, using light boxes and microscopes. Supplemental task · Task 10412 · Rated by 97 people who do the job, July 2016 11. Examine unexposed photographic plates to detect flaws or foreign particles prior to printing. Supplemental task · Task 10410 · Rated by 97 people who do the job, July 2016 12. Examine photographic images for obvious imperfections prior to plate making. Supplemental task · Task 10406 · Rated by 96 people who do the job, July 2016 13. Scale copy for reductions and enlargements, using proportion wheels. Supplemental task · Task 10433 · Rated by 95 people who do the job, July 2016 14. Analyze originals to evaluate color density, gradation highlights, middle tones, and shadows, using densitometers and knowledge of light and color. Supplemental task · Task 10427 · Rated by 96 people who do the job, July 2016 15. Set scanners to specific color densities, sizes, screen rulings, and exposure adjustments, using scanner keyboards or computers. 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