| 摘要 |
A lens-fitted photo film unit has a film roll chamber, a cartridge chamber, and an exposure frame member provided between the film roll chamber and the film container chamber. The exposure frame member has an exposure aperture through which each picture frame is recorded in the same size on the filmstrip. The exposure frame member is rearwardly convex along a lengthwise direction of the filmstrip so as to support the filmstrip to be forwardly concave behind the exposure aperture, and has a forwardly concave wall portion on one margin of the exposure aperture. Data recording holes are formed through the forwardly concave wall portion, and a data recording lamp projects light toward the data recording holes at each exposure, to photographically record a number of dots on the filmstrip on one margin of the picture frame. A data switching blade mounted in the forwardly concave wall portion in front of the data recording holes. In cooperation with an operation member that is operated to select one of different print formats to each picture frame, the data switching blade covers or uncovers the data recording holes, changing the number of dots recorded for each picture frame in accordance with a print format selected by the operation member.
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