Magnetic recording/reproducing apparatus

A magnetic recording/reproducing apparatus that is arranged to receive a tape cassette accommodating a tape recording medium that is selectively loaded thereto, the loaded tape cassette being selected from a first tape cassette of a first size accommodating a first tape recording medium and a second tape cassette of a second size accommodating a second recording medium, the apparatus comprising:

• a rotating drum unit including a rotating head;
• and
• a plurality of loading poles which loading poles are configured to pull the first tape recording medium and the second tape recording medium;
• wherein
• when the first tape cassette is loaded, the first tape recording medium is pulled out of the first tape cassette and is wound around the rotating drum unit in a first winding mode to form a first tape path;
• when the second tape cassette is loaded, the second tape recording medium is pulled out of the second tape cassette and is wound around the rotating drum unit in a second winding mode to form a second tape path;
• and
• the loading poles include a common loading pole that is commonly used for forming the first tape path and the second tape path, a first loading pole that is used for forming the first tape path, and a second loading pole that is used for forming the second tape path, the first loading pole and the common loading pole being moved when the first tape cassette is loaded, and the second loading pole and the common loading pole being moved when the second tape cassette is loaded.