Instant photo film pack

An instant photo film pack loadable in a pack holder, including a pack and a plurality of stacked self-developing photo film units contained therein;

• said pack including a box-shaped pack body, a bottom cover secured to a bottom of said pack body, a pressure plate contained between said pack body and said bottom cover, and a passage opening defined between said pack body and said bottom cover, said pack body having an exposure opening formed in an upper wall thereof, said pressure plate being provided with a pair of lateral walls so as to separate an inside of said pack body into upper and lower chambers;
• each of said photo film units including a photosensitive sheet contained in said upper chamber, an image receiving sheet contained in said lower chamber, a withdrawing sheet having an edge connected with said photosensitive sheet, a developing solution pod, disposed on said withdrawing sheet, for containing developing solution, a mask sheet having an edge connected with said withdrawing sheet, a mask opening formed in said mask sheet, said image receiving sheet being disposed behind said mask opening to close said mask opening, and secured thereto in a peelable manner;
• said instant photo film pack comprising:
• said pack body, said bottom cover and said pressure plate being plastic molded pieces;
• at least one pair of transmission flaps, produced from plastic material, disposed on lateral edges of said bottom cover, deformed by a biasing force of a spring member on an inside of said pack holder to said pressure plate, for pushing said pressure plate toward said exposure opening in contact with said lateral walls;
• wherein said transmission flaps extend with an inclination and in a direction substantially perpendicular to a withdrawing direction of said photo film units.

An instant photo film pack loadable in a pack holder, including a pack and a plurality of stacked self-developing photo film units contained therein;

• said pack including a box-shaped pack body, a bottom cover secured to a bottom of said pack body, a pressure plate contained between said pack body and said bottom cover, and a passage opening defined between said pack body and said bottom cover, said pack body having an exposure opening formed in an upper wall thereof, said pressure plate being provided with a pair of lateral walls so as to separate an inside of said pack body into upper and lower chambers;
• each of said photo film units including a photosensitive sheet contained in said upper chamber, an image receiving sheet contained in said lower chamber, a withdrawing sheet having an edge connected with said photosensitive sheet, a developing solution pod, disposed on said withdrawing sheet, for containing developing solution, a mask sheet having an edge connected with said withdrawing sheet, a mask opening formed in said mask sheet, said image receiving sheet being disposed behind said mask opening to close said mask opening, and secured thereto in a peelable manner;
• said instant photo film pack comprising:
• said pack body, said bottom cover and said pressure plate being plastic molded pieces;
• said bottom cover being so associated with said pack body as to move with said pressure plate toward said exposure opening in response to a biasing force of a spring member on an inside of said pack holder;
• wherein said regulator member is included in said plastic molded piece of said bottom cover.

An instant photo film pack loadable in a pack holder, including a pack and a plurality of stacked self-developing photo film units contained therein;

• said pack including a box-shaped pack case and a pressure plate contained therein, said pack case having an exposure opening formed in an upper wall thereof and a passage opening formed with a front wall thereof, said pressure plate being provided with a pair of lateral walls so as to separate an inside of said pack case into upper and lower chambers;
• each of said photo film units including a photosensitive sheet contained in said upper chamber, an image receiving sheet contained in said lower chamber, a withdrawing sheet having an edge connected with said photosensitive sheet, a developing solution pod, disposed on said withdrawing sheet, for containing developing solution, a mask sheet having an edge connected with said withdrawing sheet, a mask opening formed in said mask sheet, said image receiving sheet being disposed behind said mask opening to close said mask opening, and secured thereto in a peelable manner;
• said instant photo film pack comprising:
• a regulator member, having plural projections at a tip end thereof, disposed under said passage opening, for contacting a back surface of said image receiving sheet, to exert frictional force for preventing said image receiving sheet from moving toward said passage opening before said image receiving sheet becomes laid acceptably on said photosensitive sheet during pulling of each of said photo film units.