Robinson, H. P. (Henry Peach), 1830-1901, author, Abney, William de Wiveleslie, Sir, 1843-1920, author, Piper & Carter, publisher · London : Piper & Carter · leaf 55
43 PRINTING FRAMES. back on that by means of two brass springs. This is a very excellent pattern for cabinet pictures and. cartes, but we can scarcely recommend it for anything larger, since even if it were possible to supply sufficient pressure to secure proper contact of the paper, the negative… … In the front part of the frame is a piece of thick plate glass (depending for its thickness on the size of the frame). On this the negative rests, and over this again are the necessary pads and backboard, which is clamped down by means of two cross- bars, on which springs are fixed. An increase of…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
