| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve element, which is used for a marking device, excellent in both of durability and sealing property, unneccessitates adjusting work and capable of printing an excellent quality mark by using the marking device having the valve element. SOLUTION: In the valve element for controlling the jetting of a liquid in the marking device for printing a mark by jetting the liquid, the valve element for the making device is composed of a rubber elastic body having a flat base part in the opposed side to the valve element and a ring like projecting part projected from the base part, and the seal between both is formed by allowing the ring like projecting part to bring into contact with the valve element. |
