Magnetic head including buffer member on groove part, method of manufacturing same, and magnetic disk unit including same
View Patent ↗A magnetic head is disclosed that includes a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by the movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of the surface of the groove part in the peripheral part of the medium opposing surface.
1. A magnetic head, comprising:
a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and
a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of a surface of the groove part in a peripheral part of the medium opposing surface, the buffer member being formed of a carbon film deposited on the part of the surface of the groove part and being lower than the air bearing surface;
wherein the buffer member is provided continuously along a direction of the airflow in opposing side edge parts of the medium opposing surface.
2. A magnetic head, comprising:
a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and
a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of a surface of the groove part in a peripheral part of the medium opposing surface, the buffer member being formed of a carbon film deposited on the part of the surface of the groove part and being lower than the air bearing surface; wherein
the medium opposing surface has a step part lower than the air bearing surface and higher than the groove part; and
an additional buffer member configured to prevent the magnetic recording medium from being damaged when the step part comes into contact with the magnetic recording medium is formed in apart of a surface of the step part in the peripheral part of the medium opposing surface.
3. The magnetic head as claimed in claim 2 , wherein the additional buffer member is provided at an air incoming end of the step part in opposing side edge parts of the medium opposing surface.
4. The magnetic head as claimed in claim 2 , wherein the additional buffer member has substantially a same hardness as a protection film formed on a surface of the magnetic recording medium.
5. A magnetic head, comprising:
a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and
a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of a surface of the groove part in a peripheral part of the medium opposing surface,
wherein the buffer member is provided continuously along a direction of the airflow in opposing side edge parts of the medium opposing surface.
6. A magnetic head, comprising:
a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and
a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of a surface of the groove part in a peripheral part of the medium opposing surface,
wherein the medium opposing surface has a step part lower than the air bearing surface and higher than the groove part,
an additional buffer member configured to prevent the magnetic recording medium from being damaged when the step part comes into contact with the magnetic recording medium is formed in a part of a surface of the step part in the peripheral part of the medium opposing surface, and
the additional buffer member is provided at an air incoming end of the step part in opposing side edge parts of the medium opposing surface.