| 摘要 |
<p>An instant photo film pack loadable in a camera (15) includes a box-shaped pack (43) and plural stacked self-developing photo film units (29) of a mono-sheet type contained therein. The pack includes an upper wall (65) having an exposure opening (45) for providing the photo film units with an exposure, and a front wall having an exit slot (46) for exiting the photo film units. The photo film units have a developing solution pod (29b) for containing developing solution along an advancing edge (29b) thereof. A bottom edge (29c) of each one of the photo film units is pushed by an ejecting claw (54) after the exposure to advance the advancing edge through the exit slot. The each one photo film unit is contacted by a spreading control member (60) while moved to a pair of spreader rollers (52). The developing solution pod is squeezed and torn upon passage between the spreader rollers to spread the developing solution in the each one photo film unit. The instant photo film pack satisfies: <MATH> where D is a moving amount of the one photo film unit moving from the initial position to a position where the advancing edge of the one photo film unit contacts the spreading control member, and F is a distance between an inner edge (45a) of the exposure opening positioned in reverse to the advancing direction, and the bottom edge of the one photo film unit directly behind the exposure opening, the bottom edge being positioned in reverse to the advancing direction. Orientation of the bottom edge is stabilized while the one photo film unit directly behind the exposure opening is advanced. <IMAGE></p> |
