Engraving and printing methods, advertisement illustration, technical- and trade-paper advertising, street-car advertising, outdoor advertising, house publications (1909)
Scranton : International Textbook Co. · leaf 49
Fig. 34 3tf ENGRAVING AND PRINTING METHODS §27 break the rays of the light into tiny separate beams onthe negative. If a half-tone illustration is observed closely,it will be seen that the shades and tones are not solidmasses, but are tiny squares, or dots. If it were not forthis breaking up of the… … Pig. 35 Printed from a 100-line screen half-tone values between the white of the high lights and the black ofthe deepest shadows. The effect produced by the screen ishardly noticeable in the dark portions of a fine half-tone, butin the lighter part, the lines are visible, though the dots orsquares…
