| 摘要 |
A lens-fitted photo film unit contains a photo film cassette, which includes a spool for winding the photo film in a roll form thereabout. A body tube contains the photo film and the spool in a rotatable manner, has a first end with a first end opening, and a second end with a second end opening. A first end cap closes the first end opening, and has an outer diameter d 1 . A second end cap closes the second end opening, has an outer diameter d 2 , and satisfies a condition of: <?in-line-formulae description="In-line Formulae" end="lead"?>d 2 <d 1. <?in-line-formulae description="In-line Formulae" end="tail"?> To contain the cassette, a cassette holder chamber in the lens-fitted photo film unit has a size corresponding to that of the cassette.
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