Feed-back for moisture medium in wet offset printing machine - involves return flow pipe from machine discharging over fluid level in storage tank

摘要

The storage tank (24) for the fluid medium is not enclosed, and in it a vacuum can be created to bring about the return flow of fluid from the moistening mechanism of the printing machine. One or more return flow pipes (22) are used, which are connected individually or in parallel groups to the moistening mechanism. The vacuum created above the fluid level in the tank is created either by a vacuum pump (28) or a connection to a vacuum line (26). The fluid in the storage tank can be cooled either in the tank or by passing through a cooling arrangement. USE - For the return flow to a storage tank of moistening medium from a wet offset printing machine.