INK DEGASSING FOR CIRCULATING INK SUPPLY SYSTEMS IN INK JET PRINTERS

摘要

An ink circulation system which improves the degassing quality of the ink supplied an ink jet print head of a printing apparatus is provided. The ink circulation system includes a supply subtank (20) for supplying ink to an ink jet print head (10) and a return subtank (30) returning the ink not ejected by the ink jet print head (10). A print circulation path links the supply subtank (20) with the ink jet print head (10) and the return subtank (30) for providing a print flow of ink from the supply subtank (20) to the ink jet print head (10), the return subtank (30), and back to the supply subtank (20). A degas circulation path links the supply subtank (20) with a through-flow degassing unit (60) for providing a degas flow of ink from the supply subtank (20) to the through-flow degassing unit (60) and back to the supply subtank (20).