The digits are quite small, and often hard to read because they are blurred by the halftone screen.
2.
A skilled mimeo operator using an electrostencil and a very coarse halftone screen could make acceptable printed copies of a photograph.
3.
Traditionally, halftone screens were generated by inked lines on two sheets of glass that were cemented together at right angles.
4.
A Scene in Shantytown, New York, March 4, 1880, the first newspaper photo printed using a halftone screen.
5.
These screen-print images turn out much better than those normally produced by using a complicated halftone screen and a large copy camera no need for a darkroom and negatives.
6.
In halftone screens that are affected by the copying process, fine line patterns in different directions that are differently affected by copying and hence produce a mark, metallic inks causing diffraction or reflection.
7.
The " Graphic " then published " the first reproduction of a photograph with a full tonal range in a newspaper " on March 4, 1880 ( entitled " A Scene in Shantytown " ) with a crude halftone screen.
8.
Coated paper has a thin layer of material such as calcium carbonate or china clay applied to one or both sides in order to create a surface more suitable for high-resolution halftone screens . ( Uncoated papers are rarely suitable for screens above 150 lpi . ) Coated or uncoated papers may have their surfaces polished by calendering.
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