| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink supply device for an inkjet printer capable of realizing a stable ink delivery by a simple constitution. SOLUTION: The ink supply device 100 includes a sub-tank 120 which is connected with a printer head 60 and in which ink is stored, a main tank 110 which is connected with the sub-tank and in which the ink supplied to the sub-tank is stored, a sub-tank decompressing part 140 for decompressing the inner pressure of the sub-tank to a negative pressure condition, and a sub-tank pressurizing part 150 for pressurizing the inner pressure of the sub-tank to a positive pressure condition, and the sub-tank decompressing part 140 and the sub-tank pressurizing part 150 are composed by one set of pump 160. COPYRIGHT: (C)2010,JPO&INPIT |
