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The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States (1895)

Farquhar, H. D. (Harry D.), Eder, Josef Maria, 1855-1944 · London : Dawbard & Ward · leaf 89

An illustration from The grammar of photo-engraving : containing instruction in drawing, chemistry and optics, as applied to photo-engraving, and a practical treatise on the art of half-tone, zinc etching, swelled gelatine, lithotype and chalk plate engraving, as practiced in the United States, 1895, leaf 89
MAR OF PHOTO-ENGRAVING. these the plate is laid. By this arrangement the zinc is kept from warping, which is always the case when held in the hand with pincers or laid on a flat piece of iron. Etching Tub. Etching tubs adapted for general work are of 18 x 24 inches in dimensions. They should be… … Fig. 35 provided with dash-boards, AA, springs, B, which regulates the swing of the tub, and draining holes, CC. Printing Fkame. The common printing frame as used by photographers is not suitable for printing on zinc, as enough pressure cannot be obtained. I have used several frames of different…

Photoengraving

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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