Magnetic recording and reproducing device

A magnetic recording and reproducing device comprising:

• a magnetic recording medium;
• a recording element;
• and
• a reproducing element;
• wherein the recording element is an inductive recording element including
• a first magnetic pole which generates a magnetic field, and
• a second magnetic pole which is separated from the first magnetic pole with a write gap interposed therebetween,
• a distal end width of the first magnetic pole is substantially the same as a distal end width of the second magnetic pole,
• a reproducing element width of the reproducing element is equal to or less than 0.8 μm,
• the magnetic recording medium includes
• a non-magnetic support, and a magnetic layer including a ferromagnetic powder,
• a number distribution A of equivalent circle diameters of a plurality of bright areas in a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 5 kV satisfies the following (1) to (3):
• (1) the number of bright areas having an equivalent circle diameter of 1 nm to 50 nm is 1,000 to 30,000,
• (2) the number of bright areas having an equivalent circle diameter of 51 nm to 100 nm is 1,000 to 25,000, and
• (3) the number of bright areas having an equivalent circle diameter equal to or greater than 101 nm is 100 to 7,000, and
• a number distribution B of equivalent circle diameters of a plurality of dark areas in a binarized image of a secondary electron image obtained by imaging the surface of the magnetic layer with a scanning electron microscope at an acceleration voltage of 2 kV satisfies the following (4) to (6):
• (4) the number of dark areas having an equivalent circle diameter of 1 nm to 50 nm is 10 to 25,000,
• (5) the number of dark areas having an equivalent circle diameter of 51 nm to 100 nm is 200 to 5,000, and
• (6) the number of dark areas having an equivalent circle diameter equal to or greater than 101 nm is 0 to 200.