| Patent application number | Description | Published |
|---|
| 20090103208 | MAGNETIC HEAD - According to an aspect of an embodiment, a magnetic head includes: a write element including a first magnetic pole and a second magnetic pole magnetically connected to the first magnetic pole; and a nonmagnetic insulating layer made of inorganic material surrounding the write element. The magnetic head further includes: upper and lower low-thermal-expansion material layers disposed on and under the nonmagnetic insulating layer, respectively, the low-thermal-expansion material layers having a thermal coefficient lower than that of the nonmagnetic insulating layer; and a heater element embedded in the nonmagnetic insulating layer. | 04-23-2009 |
| 20090310243 | MAGNETIC HEAD AND MAGNETIC STORAGE DEVICE - A magnetic head that floats up while directing an air bearing surface to a relatively moving storage medium and stores information into the storage medium, the magnetic head includes: a main magnetic pole that generates a magnetic field for recording information into the storage medium; and a heater that adjusts a floating-up amount of the magnetic head from the storage medium by deforming the air bearing surface with heat, wherein the heater has a shape that extends towards the air bearing surface up to a proximate distance at which a distance from the air bearing surface overlaps with the main magnetic pole while monotonously decreasing the distance from the air bearing surface to pass a proximate point to the main magnetic pole, and that extends away from the air bearing surface while monotonously increasing the distance from the air bearing surface after passing the proximate point. | 12-17-2009 |
| 20090316302 | MAGNETIC HEAD AND MAGNETIC DISK UNIT - A magnetic head includes: a slider which floats above a recording medium by air flow generated by rotation of the recording medium; and an element forming section fixed to an air outflow side of the slider and formed with an element which accesses the recording medium. The element forming section includes: a recording element having a main magnetic pole which records data in the recording medium; and a reproducing element which is formed closer to the slider than the recording element and which reproduces data recorded in the recording medium. The element forming section further includes: a heat insulation layer formed between the main magnetic pole and the reproducing element; and a heater formed closer to the slider than the heat insulation layer. | 12-24-2009 |
| 20100073815 | MAGNETIC HEAD AND MAGNETIC DISK DEVICE - A magnetic head provided on a drain end side of a head substrate constituting a head slider includes a heater, a write coil, a shield, an insulation layer between the heater and the head substrate, a thermal insulation layer whose thermal conductivity is lower than the insulation layer and a thermal radiation layer whose thermal conductivity is higher than the shield, wherein the thermal insulation layer is disposed between the heater and the head substrate and the thermal radiation layer is disposed between the write coil and the head substrate. | 03-25-2010 |
| 20100118439 | MAGNETIC HEAD AND INFORMATION STORAGE APPARATUS - According to one embodiment, a magnetic head includes: a coil configured to be supplied with current; a main magnetic pole configured to be disposed along one surface of the coil and extend in a direction orthogonal to a floating surface from the floating surface; at least one auxiliary magnetic pole configured to be disposed along other surface of the coil and parallel to the main magnetic pole; a connecting portion configured to be linked with the coil and connect the main magnetic pole and the auxiliary magnetic pole; and a radiating layer configured to be disposed between the coil and the auxiliary magnetic pole and have larger thermal conductivity than the auxiliary magnetic pole. | 05-13-2010 |
