Patent ID: 7791835

Claim:
A multi-channel head comprising: a substrate; and a plurality of recording elements arranged on said substrate in a track width direction, each recording element comprising: a first yoke having a first pole on a side close to a medium-facing surface of said substrate; a second yoke being spaced apart from said first yoke in a lamination direction of said substrate and having a second pole on a side close to said medium-facing surface; a back yoke being located behind said medium-facing surface in a depth direction perpendicular to both said lamination direction of said substrate and said track width direction and connecting said first yoke and said second yoke; and a coil being wound around said back yoke, wherein at least one of said recording elements satisfies BGW<PW and BGD>BGW, where PW represents a shorter one of a width of said first pole taken along said track width direction at said medium-facing surface and a width of said second pole taken along said track width direction at said medium-facing surface, BGW represents a width of said back yoke taken along said track width direction, and BGD represents a depth of said back yoke taken along said depth direction.