Patent ID: 6192197
Filing Date: 2001-02-20
Classification: G03B

Abstract:
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:said pack case and said pressure plate being plastic molded pieces;a biasing force transmission member, disposed on a bottom wall of said pack case, for transmitting a biasing force of a spring member on an inside of said pack holder to said pressure plate, to push said pressure plate toward said exposure opening; said biasing force transmission member being inclined upward toward one of said lateral walls.