Patent ID: 7016148
Filing Date: 2006-03-21
Classification: G11B

Abstract:
1. A magnetic head for a rotary head drum, comprising: a head chip having a tape sliding surface at an end thereof and having a magnetic gap formed on said tape sliding surface, said tape sliding surface having a pair of grooves formed along the opposite sides of said magnetic gap in such a manner that said tape sliding surface is divided into three tape sliding surfaces including a belt-like central tape sliding surface on which said magnetic gap is formed and a belt-like upper side tape sliding surface and a belt-like lower side tape sliding surface formed on the opposite upper and lower sides of said central tape sliding surface with said pair of grooves left therebetween, a first one of said upper side tape sliding surface and said lower side tape sliding surface which is brought into contact with a magnetic tape earlier than said central tape sliding surface being formed with an increased thickness, a second one of said upper side tape sliding surface and said lower side tape sliding surface which is brought into contact with the magnetic tape later than said central tape sliding surface being formed with a decreased thickness.