GB1210130A - Printing apparatus - Google Patents

Abstract

1,210,130. Rotary printing apparatus. S & S CORRUGATED PAPER MACHINERY CO. Inc. 25 Oct., 1968 [27 Dec., 1967], No. 50660/68. Heading B6C. In a rotary press comprising a ductor roller 27, Fig. 2, in direct contact with the printing cylinder 25 the roller forms with an adjustable scraper blade mechanism 28 a trough-like openended ink fountain to which ink is pumped through a circulatory system from a nozzle 69 positioned above the fountain above the level of ink therein at a point mid-way along the length of the fountain. Ink flowing from the fountain is caught in a pan therebeneath for recirculation. The blade mechanism 28 carries a non-metallic blade 31, Fig. 5, held, when operative, against the ductor roller 27 through readily adjustable fluid operated piston and cylinder devices 42, 43. To allow ready access to the blade 31 for purposes of renewal &c. the mechanism 28 is swingable about a pivot axis through handles 52. Automatic means are provided such that upon stripping the printing cylinder 25 the roller 27 and an impression cylinder 26 automatically fall away from the printing cylinder. The blade 31 and the roller 27 are mounted on a common support so that even when the roller 27 moves from the printing cylinder the relationship between the roller and the blade is not disturbed. Furthermore, clutch means are provided to enable the press to be driven by a motor other than the main motor for proofing purposes. This other motor also rotates the ductor roller 27 when the machine is stopped in order to prevent the ink hardening thereon. The impression and printing cylinders are mounted in eccentric bearings. The press forms a part of a box-blank machine and is readily removable as a unit from the machine through being mounted on wheels running along a track.