GB656076A - Improvements in or relating to printing presses - Google Patents

Abstract

656,076. Printing-machines. GOSS PRINTING PRESS CO., Ltd. Dec. 29, 1948, No. 33411. Convention date, Feb. 6. [Class 100 (ii)] Inking-apparatus.-In an ink distributing system a multi-band ink fountain feeds on to a roller system comprising axially-restrained steel rollers and axially reciprocating grooved rubber rollers, the reciprocation amplitude and groove width being such that the groove edges are alternately advanced to at least the edges of the colour separation strips established by the ink fountain, and may be advanced therebeyond to reduce the separation strips to a negligible width, thus enabling " bleeds " of full page size to be printed in all positions on the plate cylinder. The vibrating mechanism described in Specification 655,867 may be set to give the required amplitude of reciprocation; in the roller system shown in Fig. 2 thereof, the rollers 25, 28, 30 (not shown), 32, 34, 39 may be connected to a worm gear 55 and spur or helical-toothed gears 49, 50, 46, 62, 65, respectively of the gear train shown, which is driven by a shaft 39 also connected through bevel gearing and the shaft 56 to the impression cylinder and thence by gears 59, 60 to the plate cylinder 29. The gap between rollers 28 and 32 shown in Fig. 2 of the above Specification may be narrowed still further by a plate &c. to entrap ink mist within the pocket formed by rollers 28, 29, 30 (not shown), 31, 32. Specification 655,845 also is referred to.