Magnetic recording head which produces variable erase bands

A magnetic recording system for recording data in a desired orientation on a recording medium, said system comprising:

• a magnetic recording head, comprising:
• a leading pole defining a first generally planar surface, a second generally planar surface and a third generally planar surface, wherein said second surface adjoins, is positioned between and forms a continuous magnetic layer with said first surface and said third surface;
• and
• a trailing pole defining a fourth generally planar surface, a fifth generally planar surface writing data in a desired orientation and a sixth generally planar surface, wherein said fifth surface adjoins, is positioned between and forms a continuous magnetic layer with said fourth surface and said sixth surface and wherein further said fourth surface opposes and is generally parallel to said first surface, said fifth surface opposes and is generally parallel to said second surface and said sixth surface opposes and is generally parallel to said third surface and wherein further said second surface is perpendicular to said desired orientation and said first and third surfaces are non-parallel to said second surface;
• and
• a non-magnetic layer between said trailing pole and said leading pole;
• a conducting coil enclosing one of said poles;
• and
• a signal source connected to said coil to energize said coil to simultaneously cause said fifth surface to cooperate with said second surface to write data, and said fourth surface to cooperate with said first surface and said sixth surface to cooperate with said third surface to write transitions which are non-parallel to said transitions written by said fifth surface and said second surface.

A magnetic recording system for recording data on a magnetic medium wherein the system has a maximum expected servo position error, comprising:

• a magnetic recording head, comprising:
• a leading pole defining a first portion, a second portion and a third portion, said second portion being positioned between said first portion and said third portion, wherein said first portion, said second portion and said third portion form a single continuous magnetic layer;
• a trailing pole defining a fourth portion, a fifth portion and a sixth portion, wherein said fourth portion, said fifth portion and said sixth portion form a single continuous magnetic layer and wherein further said fourth portion opposes and is parallel to said first portion, said fifth portion writing data in said desired orientation opposes and is parallel to said second portion and said sixth portion opposes and is parallel to said third portion and wherein further said fifth portion and said second portion cooperate to write transitions on said magnetic medium, said fourth portion and said first portion cooperate to write transitions on said magnetic medium which are non-parallel to said transitions written by said fifth portion and said second portion and said sixth portion and said third portion cooperate to write transitions on said magnetic medium which are non-parallel to said transitions written by said fifth portion and said second portion, wherein the width of said non-parallel portion is roughly equal to or greater than said maximum expected servo position error of said system;
• and
• a non-magnetic layer between said trailing pole and said leading pole;
• a conducting coil enclosing one of said poles;
• and
• a signal source connected to said coil to energize said coil to simultaneously cause said fifth portion to cooperate with said second portion to write data, and said fourth portion to cooperate with said first portion and said sixth portion to cooperate with said third portion to write transitions which are non-parallel to said transitions written by said fifth portion and said second portion.

A magnetic read/write head for reading data recorded on and writing data onto a magnetic medium, comprising:

• a read head for reading data recorded on a magnetic medium, comprising:
• a leading magnetic shield layer;
• a magnetoresistive sensor;
• and
• a non-magnetic layer;
• and
• a write head for writing data on a recorded medium, comprising:
• a continuous leading magnetic write pole, which is also a trailing shield for said read head, comprising a center portion and extension portions that are non-parallel to said center portion;
• a continuous non-magnetic gap layer adjacent said leading write pole comprising portions parallel to each adjacent portion of said leading write pole;
• and
• a continuous trailing write pole comprising portions parallel to each adjacent portion of said non-magnetic gap layer.

A magnetic read/write head for a read/write system for reading data recorded on and writing data onto a magnetic medium wherein said system has a maximum expected servo position error, comprising:

• a read head for reading data recorded on a magnetic medium, comprising:
• a leading magnetic shield layer;
• a magnetoresistive sensor;
• a trailing magnetic shield layer;
• and
• a non-magnetic layer;
• and
• a write head for writing data on a recorded medium, comprising:
• a continuous leading magnetic write pole comprising a center portion and extension portions that are non-parallel to said center portion;
• a continuous non-magnetic gap layer comprising portions parallel to each adjacent portion of said leading write pole;
• and
• a continuous trailing write pole comprising portions parallel to each adjacent portion of said non-magnetic gap layer.

An inductive read/write head in which both write and read processes are performed by a common gap, comprising:

• a continuous recording gap layer deposited over a leading pole which has been formed to create extension portions non-parallel to a central portion of the recording gap layer;
• a continuous trailing pole over said gap layer, which trailing pole defines a central portion parallel to the central portion of the recording gap layer and extension portions parallel to said extension portions of the recording gap layer;
• said central portions provided with constant length dimensions regardless of an alignment of said leading and trailing poles;
• and
• said extension portion dimensions are determined by trailing pole width.