Magnetic Recording/Reproducing Apparatus and Tape Threading Method Thereof

A tape threading method of a magnetic recording/reproducing apparatus in which an end of a tape accommodated in a tape cassette has a coupling element, said coupling element is pulled out by a tape-pulling-out element and said tape is taken up around a drive reel, said magnetic recording/reproducing apparatus comprising

• a leader tape having one end connected to a drive shaft of said drive reel and the other end connected to said tape-pulling-out element,
• a reel hub which is located on an outer periphery of said drive shaft and which takes up said tape around an outer peripheral surface of said reel hub, and
• a lock member which connects said drive shaft and said reel hub with each other, wherein
• said reel hub includes a hub opening through which said leader tape passes,
• said lock member includes a lock member rotation shaft provided on said reel hub, an element abutment portion which is turned around said lock member rotation shaft through a predetermined angle, a biasing member which biases said element abutment portion toward said hub opening, and a lock pin which corresponds to a fitting hole formed in said drive shaft,
• said tape-pulling-out element is introduced into said hub opening by normally rotating said drive shaft,
• said lock pin is biased toward said drive shaft by displacing said element abutment portion by said tape-pulling-out element, and then,
• said lock pin is inserted into said fitting hole by reversely rotating said drive shaft.