Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features (G11B5/265, , G11B5/31 take precedence)

Full Title

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Structure or manufacture of heads, e.g. inductive > Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features (G11B5/265, , G11B5/31 take precedence)

Child Classifications

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• G11B 5/1871
• G11B 5/1875
• G11B 5/193 the pole pieces being ferrite
• G11B 5/21 the pole pieces being of ferrous sheet metal
• G11B 5/23 Gap features
• G11B 5/245 comprising means for controlling the reluctance of the magnetic circuit (G11B5/255 takes precedence)
• G11B 5/255 comprising means for protection against wear