PURPOSE: To keep off any possible malfunction in a magnetic head through a camera therewith.

CONSTITUTION: Each inner wall surface of two guide projections 11c, 11d is made up into a taper form so as to have a distance with these guide projections 11a, 11b narrowed to some extent. While a film 3 is fed to each interval between the guide projections 11a and 11c as well as 11b and 11d, a side end 3b of the film 3 is pushed upward as in illustration by each inner wall surface of the guide projections 11c, 11d, and thereby a side end 3a is pushed aside to each side of the guide projections 11a, 11b. Therefore, a snaking motion of the film 3 is kept back, and a positional relationship between a head surface 12a of a magnetic head 12 and a magnetic recording layer of the film 3 is always kept constant. A track slippage is prevented from occurring, while this film is in no case tilted in a film passage, and an azimuth loss becomes extremely lessened, thus such a regenerative signal as less in noise is securable.