| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing structure which can ensure liquid-tightness of a connecting part of an ink inflow port of a head unit. SOLUTION: An elastic member 50 is arranged between the head unit 30 and a buffer tank 40. The elastic member 50 is equipped with a plurality of through-holes 51a-51d which are formed in such an oval shape as to face the ink inflow port 32 of the head unit, a flat base plate part 55 with the through-holes, and a first protrusive streak part 56 which protrudes in such a manner as to surround the periphery of each of the through-holes. The protrusive streak part 56 is formed in such a shape that a width dimension W1, on the side of the base plate part 55, of the protrusive streak part 56 in the central parts of the long sides 52 of the through-hole, positioned at both the arrangement-direction ends of the through-hole, is greater than a width dimension W2 of the protrusive streak part 56 in other parts. A top part C of the protrusive streak part 56 is curved with respect to the long side 52 so as to be farthest away from the through-hole in the central part of the long side 52. When subjected to a compressive force, the protrusive streak part 56 is hardly tilted. COPYRIGHT: (C)2006,JPO&NCIPI |
