Patent ID: 6760190
Filing Date: 2004-07-06
Classification: G11B,Y10S,Y10T

Abstract:
A recording/reproducing separation type magnetic head comprising:a recording head for recording information to a magnetic recording medium; and, a reproducing head for reproducing information from said magnetic recording medium; wherein said recording head comprises a lower magnetic core, a write gap film on said lower magnetic core for forming a write gap and an upper magnetic core, and said upper magnetic core and said lower magnetic core form a magnetic path by providing said write gap between said upper magnetic core and said lower magnetic core; wherein said upper magnetic core comprises a track portion and a spreading portion spreading from said track portion, wherein a tip end of said track portion of said upper magnetic core constitutes an air bearing surface which faces said magnetic recording medium, wherein a transition between said track portion and said spreading portion is positioned between said air bearing surface and a zero throat level position, wherein said recording head comprises an insulating film provided between said upper magnetic core and said lower magnetic core, wherein said insulating film is formed in multiple layers, and a tip end position of at least one of said multiple insulating layers other than the lowest of said multiple insulating layers extends nearest to said air bearing surface and determines said zero throat level position.