| 摘要 |
PROBLEM TO BE SOLVED: To provide a shutter apparatus and an imaging apparatus stable in exposure time without deterioration of squareness of a shaft of a shutter bottom board.SOLUTION: The shutter apparatus comprises a shutter bottom board in which an opening and a shaft are formed, a shutter blade for opening and closing the opening, a drive member pivotally supported on the shaft to drive the shutter blade, a ratchet member disposed in the state of forming a gap between the shaft and itself, a drive spring with a first end engaged with the drive member and a second end engaged with the ratchet member, for biasing the drive member, and an auxiliary bottom board engaged with the tip of the shaft and holding the ratchet member.SELECTED DRAWING: Figure 8 |
