公开(公告)号：US3959824A

公开(公告)日：1976-05-25

申请号：US436598

申请日：1974-01-25

申请人： Nobuaki Ohi ,  Kanzi Ito ,  Katsuo Kamata ,  Masaru Sato

发明人： Nobuaki Ohi ,  Kanzi Ito ,  Katsuo Kamata ,  Masaru Sato

IPC分类号： G11B5/17 ,  G11B5/265 ,  G11B5/48 ,  G11B5/20

CPC分类号： G11B5/17 ,  G11B5/2652 ,  G11B5/4893

摘要： A two gap read/write head assembly including a read pole-piece and a write pole-piece which are placed in close proximity to each other in a common housing, a first auxiliary magnetic gap means being provided adjacent to and near the gap of the read pole-piece but insuring the first auxiliary magnetic gap means does not engage with the magnetic recording medium so that any feedthrough signal due to a write signal may be effectively cancelled, and/or a second auxiliary magnetic gap means being provided adjacent to and near the gap of the write pole-piece but insuring the second auxiliary magnetic gap means does not engage with the magnetic recording medium so that any leakage flux produced at the gap of the write pole-piece may be effectively cancelled by a leakage flux created at the second auxiliary magnetic gap means to reduce the feedthrough signal.