Ink circulation system, inkjet recording apparatus, and ink circulation method thereof

摘要

An ink circulation system, an inkjet recording apparatus having the ink circulation system, and an ink circulating method thereof. The ink circulation system includes an ink tank (300) including an ink outlet (310) and an ink inlet (320), a head assembly (200) including a head chip (240) through which an ink is discharged, and a filter (230), a supply path (410) which supplies the ink of the ink tank (300) to the head assembly (200), a first feed line (420) through which ink of the head assembly (200) at the upstream of the filter (230) is conveyed into the ink tank (300), a second feed line (430) through which the ink of the head assembly (200) at the downstream of the filter (230) is conveyed to the ink tank (300), and a pump (500) which is provided at the ink inlet (320) of the ink tank (300) to provide the first and the second feed lines (420,430) with a negative pressure to circulate the ink.