| 摘要 |
PROBLEM TO BE SOLVED: To provide a dispensing device for automatically and rapidly replacing a dispensing head and can positively retain it. SOLUTION: A dispensing device has a head-accommodating device 4 that accommodates a dispensing head 3 that sucks and discharges a reagent, a chuck mechanism 2 that is mounted to the output terminal of a reciprocating drive device 1 and chucks it and releases the chucking, and a chuck control mechanism that controls the chuck operation and the chuck release operation of the chuck mechanism 2. Also, the chuck mechanism 2 has a plurality of chuck nibs 23 and 23 for pinching the base edge part of the dispensing head 3 from the surrounding, each chuck nib 23 has an elastic piece 100 at the engagement part to the dispensing head 3, and an engagement support surface 34b where the elastic piece 100 should be pressed due to the chuck operation of a plurality of chuck nibs 23 and 23 is formed at the dispensing head 3. |
