Effects of Slider Mass and Load Force on the Head-Jumping Height in Contact Recording.

The authors studied the effects of the slider mass and load force on the head jumping height in contact recording. The experiments were performed by using a contact-type model head and a measurement system consisting of an LDV and a piezo actuator. It has shown the results as follows. The jumping height decreased with an increase in the loading force. The jumping height had a complex dependences on the slider mass and load force. It was reduced for a slider of more than 1.0 mg under a suitable loading force. Lubrication lowered the jumping height. As regarding the jumping height, these findings suggest that, it is possible to design a contact recording head-disk interface (HDI) by using a high-mass slider such as conventional ones.