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Lethbridge Herald Newspaper Archives

- Page 46

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Lethbridge Herald, The (Newspaper) - April 9, 1974, Lethbridge, Alberta 14 THE LETHBRIDGE HERALD Tuesday, April 9, 1974 Press room Newspaper production reaches its climax in the pressroom: from a vague conception 24 hours earlier to a distinctive, orderly product we call a newspaper. The finished product rolls off an ultra-modern Goss offset Urbanite press (bottom right) consisting of seven black and one three-color units. It has a capacity of 64 pages in one press run and is capable of printing papers an hour at high speed. But before that can happen the flimsy pasteups that have come from the composing room must be converted into thin metal sheets so they can be fitted onto the press. This is made possible through one of the biggest cameras in Lethbridge (top Its product is a far cry from the old days of heavy alloy cylinders. In the offset process, the pasteup of each page is photographed. The exposed negative is fed into a developer and then onto platemakers, where the negatives are "printed" onto thin aluminumi plates with lignt-sensitive emulsion. This process is called a burn (centre Five-thousand watt ultra- violet light bulbs burn off the emulsion through the white parts of the negative. That stabilizes the lettering, lines and illustrations on the resulting plate (bottom which is then thoroughly scrubbed and coated with lacquer. In the final step the flexible metal plate is strapped onto the press cylinders (centre The delicate offset process, requiring water as well as ink, involves transferring the ink to another cylinder, then to paper. ;