| 摘要 |
PROBLEM TO BE SOLVED: To press a wiper member against a nozzle surface by a uniform force when the nozzle surface is wiped by the wiper member set in a rotary body.SOLUTION: The wiper member is set movably in a radial direction of the rotary body. When the rotary body rotates to the wiper member to wipe the nozzle surface, the wiper member wipes the nozzle surface while changing a position in the radial direction accompanied by the rotation of the rotary body. The position of the wiper member is prevented from being constrained on the circumference of a fixed radius around a rotary shaft of the rotary body, enabling the wiper member to also move nearly parallel along the nozzle surface. The wiper member can be moved while a hit amount of the wiper member to the nozzle surface is kept to be nearly uniform. As a result, the nozzle surface can be wiped while the wiper member is pressed against the nozzle surface by an almost uniform force. |
