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

A magnetic tape recording and reproducing apparatus for magnetically and sequentially recording and reproducing data tracks that are provided on a data area of a magnetic tape recording medium at an azimuth angle θ°,

• wherein said magnetic tape recording medium comprises:
• the data area on which said data tracks having the azimuth angle θ° are recorded and reproduced sequentially;
• and
• two servo tracks disposed between both end portions of said magnetic tape recording medium in a width direction of said magnetic tape recording medium, each of said two servo tracks extending in a longitudinal direction of said magnetic tape recording medium and having therein a previously recorded servo track signal that includes position information recorded in the longitudinal direction representing a position of said magnetic tape recording medium and also includes tracking information recorded in parallel to said data tracks, wherein said azimuth angle θ° satisfies an equation of:
• 0 ≤ θ ≤ tan - 1 ⁡ ( 10 ⁢ p a × L ) ,
• where a width of said magnetic tape recording medium in the width direction is expressed as L (m), a data track pitch in said data area is expressed as p (m), and the greatest dimension change rate of said magnetic tape recording medium in the longitudinal direction due to a temperature and humidity is expressed as (a) (%).

A magnetic tape recording and reproducing method for magnetically recording and reproducing data tracks with respect to a data area of a magnetic tape recording medium at an azimuth angle θ°, wherein said magnetic tape recording medium comprises:

• the data area on which said data tracks having the azimuth angle θ° are recorded and reproduced sequentially;
• and
• two servo tracks disposed between both end portions of said magnetic tape recording medium in a width direction of said magnetic tape recording medium, each of said two servo tracks extending in a longitudinal direction of said magnetic tape recording medium and having therein a previously recorded servo track signal that includes position information recorded in the longitudinal direction representing a position of said magnetic tape recording medium and also includes tracking information recorded in parallel to said data tracks, wherein said azimuth angle θ° satisfies an equation of:
• 0 ≤ θ ≤ tan - 1 ⁡ ( 10 ⁢ p a × L ) ,
• where a width of said magnetic tape recording medium in the width direction is expressed as L (m), a data track pitch in said data area is expressed as p (m), and the greatest dimension change rate of said magnetic tape recording medium in the longitudinal direction due to a temperature and humidity is expressed as (a) (%).