Patent ID: 6877212
Filing Date: 2005-04-12
Classification: G11B,Y10T

Abstract:
1. A manufacturing method of a thin film magnetic head comprising: forming a lower magnetic core, forming an end portion of an upper magnetic core above said lower magnetic core, forming a rear portion of said upper magnetic core by using a negative resist or an electron beam resist to form a frame for plating above said end portion of said upper magnetic core, covering an end portion of said upper magnetic core with a non-magnetic protective film, and removing said non-magnetic protective film from an upper part until said upper magnetic core is exposed, wherein a front end of a connection area in which said end portion is connected to a rear portion of said upper magnetic core is located between a face opposed to a medium and a position defining a gap depth; wherein said end portion of said upper magnetic core has a first face emerging at the face opposed to a medium, wherein said rear portion of said upper magnetic core has a second face not emerging at the face opposed to the medium, which is connected to said end portion of said upper magnetic core at a position of said second face, wherein a distance between said first face and said second face is 0.2 to 1.5 μm. and a track width of the end portion of the upper magnetic core is 1.5 μm or less.