| 摘要 |
PROBLEM TO BE SOLVED: To achieve stable circulation of ink while preventing bubbles from reaching a plurality of head modules. SOLUTION: Ink supplied to an ink supply manifold 102 through a first main passage 106 from an ink tank is distributed and supplied to a supply port 66 of each head module 100 through a first branch passage 112. Ink discharged from a discharge port 68 of each head module 100 is collected into an ink collecting manifold 104 through a second branch passage 116 and returned to the ink tank through a second main passage 108. The respective manifolds 102, 104 have vertical height that can separate gas mixed into the ink, from the ink in the vertical direction. A bubble discharge by-pass passage 118 is provided between the respective manifolds 102, 104, and one end of the passage 118 is connected to the vertical upper side of the end on the opposite side to the side formed with an ink inflow port 110 of the ink supply manifold 102. COPYRIGHT: (C)2011,JPO&INPIT |
