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 131
copying through the plate. Making Engravings in Sections. Photo-engravings of several feet in length are frequently desired. To make them on one plate and by one operation, presents insurmountable difficulties and we resort to making the engraving in sections, and joining them afterwards. In order… … Fig. 54 A negative is now made of one section ; the position of the drawing on the board is then changed and another negative made, and so on until completed, care being taken not to move the camera or copy-board after making the first negative. The glass upon which such negatives are made must be…
Photoengraving
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
