Lens-fitted photo film unit having a recess and ridges in a housing thereof

摘要

A lens-fitted photo film unit includes a housing and a wrapping wound about the housing in belt-like fashion. The housing is pre-loaded with unexposed photo film, and incorporates a taking lens and a shutter mechanism. The housing has a rear cover, which has recesses. Outer edges of the recesses are convex. Ridges are formed in the recesses for supporting the wrapping about the housing. Outer edges of the recesses are convex.