Patent ID: 7007285

Claim:
A disk recording and/or reproducing apparatus comprises: a pair of transport members for holding a disk-like recording medium in its diametrical direction; drive means for driving a first transport member of said pair of transport members and giving rotation force to said disk-like recording medium held between the pair of transport members to rotate and move; a space adjusting mechanism capable of adjusting a space by making said pair of transport members become close to or away from each other in response to the size of said disk-like recording medium, and a disk selecting cam mechanism configured to control an adjustment amount of said space adjusting mechanism in response to the size of said disk-like recording medium, wherein said disk selecting cam mechanism includes a large-diameter cam portion and a small-diameter cam portion, and a cam pin of said space adjusting mechanism is configured to be selectively inserted to and ejected from the large-diameter cam portion or the small-diameter cam portion.