Magnetic tape recording medium, magnetic tape recording and reproducing apparatus, magnetic tape recording method and magnetic tape cassette

摘要

A magnetic tape 10 includes two servo tracks 16 respectively extending in the longitudinal direction of the magnetic tape 10 from the tape-width-direction two end portions of the magnetic tape 10, and a data area 12 interposed between the two servo tracks 16. The azimuth angle &thgr;° of the data track 14 of the data area 12 satisfies an equation of 0≦&thgr;≦tan^−1(10 p/a×L), where a data track pitch is expressed as p (m), a magnetic tape width is expressed as L (m) and the greatest dimension change rate is expressed as a (%). Since the azimuth angle &thgr;° is determined in this manner, even in case where the magnetic tape 10 is deformed in shape and/or changed in dimension, there can be prevented an offtrack error and thus the data track can be traced in the data area 12 accurately.