INKING DEVICE WITH NO KEY OF OFFSET LITHOGRAPHIC PRINTER

摘要

A keyless inking system for lithographic printing presses wherein an ink/water mixture is contained in an ink pan (51) having a tray portion (52) within which an ink roller (70) is mounted whereby ink/water mixture enters the tray portion (52) on one side and is drawn by the ink roller (70) to the other side of the tray (52) in the nip between the ink roller (70) and a celled metering roller (20) thereby delivering an excess of the mixture to the celled metering roller (20), the balance of the mixture being conveyed over a weir (55) into a reservoir (60) for continuous mixing and recirculation back to the pan, and wherein the excess ink/water mixture on the metering roller (20) is continuously scraped off by means of a doctor blade (75) and wherein the metered portion of the ink/water mixture remaining in the metering roller's cells is delivered in part into the inking train of a more-or-less conventional lithographic printing press.