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The three levels of these cushion mounting tapes are: The R/bak SA 3100, soft, for combination jobs with demanding halftone process and fine screen work; the R/bak SA 3300, medium, for general purpose combination jobs with screen, line and solid work; and the R/bak SA 3500, firm, for combination jobs with bold lines and solids with darker screens.
1) This halftone process made it possible to print photographic images easily and cheaply in books.
Not only was a creative idea taking shape in his mind, but also the halftone process was now available to newspapers, replacing the line drawings of the past.