A manual of photo-engraving : containing practical instructions for producing photo-engraved plates in relief-line and half-tone with chapters on dry plate development and half-tone color work (1896)
Jenkins, H. (Harry), 1868- · Chicago : Inland Printer · leaf 38
so that the springs will not interfere with theslide. Across the corners of the kit between theframes of which it is composed are placed four cor-ner pieces to separate screen and plate. These areoften of silver but may also be made of wood, andshould be no thicker than to prevent contact ofscreen… … HALF-TONE—120-LINE SCREEN. .MANUAL OF PHOTO-ENGRAVING. -1 containing- the springs ; C, the kit complete, withcorners. The kit should be made of a size to readilyadmit the screen used, negative glass of the samesize being used also. It should be thoroughly cov-ered with shellac varnish, to prevent…
Photoengraving · Color photography
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