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Photogravure and Rotogravure These are methods of intaglio printing widely used incommercial printing (and by various other names), asfor the Sunday pictorial supplement of newspapers. It istrue intaglio printing in that the printing is from recess-engraved plates. However, such plates are made by meansof photography through screens—like the ordinary half-tone illustration in "slick paper" magazines. These gra-vure plates differ from the ordinary half-tone illustrationin that the latter is a relief and the gravure is a recessplate. Photography and screens, or "dust boxes" which coatthe plate unevenly to make it appear that a screen hasnot been used, are also sometimes employed for theproduction of postage stamps. Such is the case withsome of the British Empire stamps. When skillfully usedin combination with line engraving, the result is excellentand often even more pleasing than the strictly line-engraved design. It is possible by use of photographyto soften some of the details and, in combination withthe handwork of the line engraver, the effect is strikingand not obtainable by either method alone. |
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