GB190802076A - Improved Mechanism for the Production of Photographic Copies and the like. - Google Patents

Abstract

2076. R÷ttgen, J., and Frey, J. Jan. 29. Printing; trays, dishes, &c.-A closed dark-box contains continuous printing-apparatus together with developing, drying, and storing apparatus. The paper from a roll 1, Fig. 1, and a negative are fed over a plate 8 by a travelling apron 7, the negative being caught into a box 11 by an edge 10. The plate 8 may be formed by a portion of a glass cylinder 30, Fig. 5, or by a hollow glass body filled with liquid ; or it may be a sheet of plain metal with a series of holes, such as shown in Fig. 7 or Fig. 8, spaced to admit of printing. These holes may have a conical bore. The printed paper is attached to travelling tapes 18, Fig. 1, for the purpose of guiding its end through the developing, washing, and drying chambers to the receiving- roller 29. The end of the paper 24, Fig. 3, is clipped between two clamping-strips 19, 20, . attached to the tapes 18 by a hook 22. The paper passes beneath a spray 25 and over rollers 26. A revolving brush 32 takes off any solid deposit on the paper, which is then rinsed by another spray. Squeezing-strips 28 take off superfluous liquid, after which paper passes over a drying-cylinder and over rollers to the store roller 29. The strips 19, 20 fit into a slot cut in this roller, which is geared with the other moving rollers so that the printing and subsequent operations are performed continuously.