| 摘要 |
PURPOSE:To eliminate discharge miss as well as to prevent air bubbles from entering into a recording agent due to vibration during high speed scanning, by integrally forming a head and a recording agent tank, and by filling a porous material, which has continuous micron-sized holes, into the tank. CONSTITUTION:An ink jet head is accommodated in a head accommodation section 2 of a box 1. A supply tube 5 is connected to the end of a glass nozzle 4 in the head, while the other end of the supply tube 5, passing through a bulkhead 6 located between the head accommodation section 2 and an ink reservoir 3, extends as far as the bottom of the reservior 3. Next, a film 8 which has micron-sized holes is installed to the bulkhead 6 between the reservoir 3 and the head accommodation section 2 in order to equalize the pressure in the reservoir 3 to the atmospheric pressure. Further, a porous material 10 having continuous micron-sized holes is filled into the reservoir 3, thereby waving of the recording agent as well as entering of the air bubbles is prevented. |
