Horgan's half-tone and photomechanical processes .. . tone negative in singlelines. In 1897 tne writer devised two stops for making news-paper half-tone negatives, in which the aim was chiefly greatcontrast. The smaller one, for getting the shadow dots, wasa square stop set diagonally, and the larger one — for closingup the high lights quickly — was a large square stop withthe corners extended. They have gone into general use andhave been given the writers name. They are referred tohere for the reason that these stops have been redrawn byseveral artists, when copied into French, German and oth
Horgan's half-tone and photomechanical processes .. . tone negative in singlelines. In 1897 tne writer devised two stops for making news-paper half-tone negatives, in which the aim was chiefly greatcontrast. The smaller one, for getting the shadow dots, wasa square stop set diagonally, and the larger one — for closingup the high lights quickly — was a large square stop withthe corners extended. They have gone into general use andhave been given the writers name. They are referred tohere for the reason that these stops have been redrawn byseveral artists, when copied into French, German and otherpublications. Then they have been recopied back into Eng-lish publications in such distorted shapes that the author canscarcely recognize them. Further, and what is much worse,they are recommended for all half-tone purposes when theywere only intended to produce contrasty negatives, for whichthey will be found to be admirably adapted. Every conceivable shape of diaphragm aperture has beentried for normal half-tone negative-making and the expe-. HORGAN STOPS. AFTER COLLIDING WITH THE OVERLAND EXPRESS NEWSPAPER HALF TONE BY AMERICAN PRESS ASSOCIATION THE HALF-TONE PROCESS 101 rience gained from their use is that the round, square, andsquare with extended corner stops fulfil all half-tone operators will continue to construct theirfavorite shaped stops, and from the wonderful results theyalone obtain from their use they would seem to be justified. HALF-TONE DEVELOPMENT. The feature to be observed in half-tone development isthat the developing solution be flowed over the exposed plateso as to cover it in one sweep. Stoppage of the flow ofdeveloper is liable to leave a line that can not afterward beeliminated. Should the sensitive plate, from long exposure, becometoo dry, it can be dipped once more in the silver bath. Thissupplies the surface with the free silver which, combiningwith the iron of the developer, forms the intense imagedesired. Drying of the pla
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Keywords: ., bookcentury1900, bookdecade1910, bookidhorganshalft, bookyear1913
