Photo film winding method and winder apparatus for a photo film cassette

摘要

A photo film cassette includes a spool for winding the photo film thereabout, and a cassette shell for containing the spool in a rotatable manner. The spool has first and second ends disposed to appear outside the cassette shell. To manufacture the photo film cassette, a cassette shell with the spool is retained while confronting a drive shaft with the first end and confronting a support shaft with the second end. The support shaft is slid in an axial direction, to support the second end. The spool is displaced via the support shaft to a braked state where rotation of the spool is blocked. The spool is displaceable between the braked state and a released state. The drive shaft is rotated and slid while the spool is in the braked state, to engage the drive shaft with the first end in a key-engaged manner. After the drive shaft is engaged with the first end, the spool is displaced from the braked state to the released state. The drive shaft is rotated to wind the photo film about the spool, which is rotated inside the cassette shell while supported by the support shaft and the drive shaft.