Printing machine having reciprocating carriage carrying both cleaning and ink delivery devices

摘要

A rotary printing machine having a cylinder, two doctor blades acting on the cylinder, and a gravity fed ink dispensing mechanism and a drum cleaning spray system provided on a reciprocating carriage. Ink is applied in excess to one of the doctor blades and excess ink is removed by the other. One of the ink dispensing mechanisms can be removed and replaced while printing is taking place using ink from the other ink dispensing mechanism.