| 摘要 |
PROBLEM TO BE SOLVED: To provide a replaceable ink tank equipped with the ink coupling member capable of optimally corresponding to various demands always constant regardless of an apparatus state without requiring an inexpensive device. SOLUTION: When a crown member 17 is provided to the housing 20 formed to the end part of the cylindrical hole 26 being the communication part with an ink tank, pawl part 23 of the crown part 17 is guided by the groove 39 provided to the outer peripheral part of the housing 20. At this time, the elastomer 16 is pressed in the direction almost right angled to a diameter direction by the press part 22 of the crown part 17 to be elastically deformed. A groove 39 is constituted of grooves 39a, 39b extending in two directions and the engaging part 38 preventing the return of the pawl part 23 to the groove 39a is provided to the groove 39b. The pawl part 23 is energized to the engaging part 38 preventing the return of the pawl part 23 to the groove 39a is provided to the groove 39b. The pawl part 23 is energized to the upper edge part of the groove 39b by the restoring force of the elastomer 16 and the movement thereof is restricted. The detachment of the crown part 17 from the housing 26 is prevented and the closing of the cylindrical hole 26 is kept by the elastomer 16. |
