Patent ID: 7010222
Filing Date: 2006-03-07
Classification: G03B

Abstract:
1. A lens-fitted photo film unit, having a photo film holder chamber and a cassette holder chamber, said photo film holder chamber being loaded with a roll of unexposed photo film, and said cassette holder chamber being loaded with a cassette for winding and containing said photo film after being exposed, said lens-fitted photo film unit comprising: said cassette comprising a cassette shell and a spool rotatably mounted therein, the cassette shell including first and second end portions, and a middle portion disposed between said first and second end portions, said first end portion having an outer diameter d said cassette holder chamber including first and second chamber end regions, and a chamber middle region, said first and second chamber end regions receiving respectively said first and second end portions, said chamber middle region receiving said middle portion, said first chamber end region having an inner diameter D wherein said cassette and said cassette holder chamber satisfy a condition of: