printing processes
The various processes by which printing jobs are
done. There are, in general, four fundamental
printing processes: letterpress (relief printing);
intaglio (gravure printing); planography
(flat-surface printing); and silk screen.
Letterpress includes printing from raised type,
halftone, or woodcuts on a platen, cylinder, or
rotary press printing. Intaglio includes printing
from engraved plates, etching, photogravure, or
rotogravure. Planographic printing includes
lithography, offset, aquatone, collotype, etc.,
printing. Silk-screen printing utilizes a stencil
(silk or other material) through which ink or
paint, e.g., is forced. (17 )