Film cassette

A film cassette having a cylindrical cassette body, a spool rotatable within said cassette body, and a roll of film wound on said spool, said film cassette comprising:

• a film withdrawing slot formed in said cassette between two opposite wide inner surfaces of a film passage that terminates in said slot;
• a mask on at least one of said wide inner surfaces, said mask resiliently contacting the other said wide inner surface under pressure;
• and
• film feeding means for transmitting rotation of said spool to a roll of film wound on said spool in order to feed a film leader on said film from said film withdrawing slot;
• said cassette body being of plastic and said mask being of sheet material having at least one edge attached to said plastic, said mask having an opposite edge also attached to the plastic of said cassette body, said mask forming a loop between said attached edges, the loop having a midportion that resiliently contacts said other wide inner surface.

A film cassette having a cylindrical cassette body, a spool rotatable within said cassette body, and a roll of film wound on said spool, said film cassette comprising:

• a film withdrawing slot formed in said cassette between two opposite wide inner surfaces of a film passage that terminates in said slot;
• a mask on one of said wide inner surfaces, said mask resiliently contacting the other said wide inner surface under pressure;
• film feeding means for transmitting rotation of said spool to a roll of film wound on said spool in order to feed a film leader on said film from said film withdrawing slot;
• and
• a retaining projection formed on said one wide inner surface on the opposite side of said mask from said slot and engageable in a retaining hole formed in said film leader thereby releasably to hold said film leader adjacent said slot.