Magnetic tape cassette

A magnetic tape cassette including a hollow case, a pair of reels mounted within said hollow case, a magnetic tape wound onto at least one of said reels, a pressing pad for urging said tape against a recording and reproducing head, a pair of round rod guide members for guiding said tape and a pair of rotary guide members individually mounted between said round rod guide members and said pressing pad;

• the improvement comprising, a pair of tape guide mechanisms individually disposed between each of said reels and said round rod guide members in a position which will reduce the contact angle between said round rod guide members and said tape as compared to what it would be in the absence of said tape guide mechanisms;
• said tape guide mechanisms having flange portions for supporting the tape in the width direction as it reels onto and unreels from the respective reels.