Variable Depth Air Bearing Slider for Data Storage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Data storage devices with rotating magnetic media face performance degradation due to operating variances, particularly from physical reactions to thermal asperities and external shocks, which existing technologies struggle to prevent effectively, leading to reduced data capacity and reliability.
Innovation Solution
A slider configuration with variable depth regions on its floor, optimized for air bearing pressurization and damping, allowing for increased damping and stability without compromising head-medium contact detection, achieved through customized depth profiles and material removal operations to create tailored air bearing surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the head overcoat thickness is reduced to increase data capacity, then data storage density is improved, but the head becomes more vulnerable to damage from thermal asperities and contact events
Solution Approach 1:
The patent applies beforehand cushioning by designing a slider with enhanced damping characteristics that absorb and mitigate the impact of thermal asperities and contact events before they can damage the thinner head overcoat. The damping features are built into the slider structure in advance to protect the vulnerable head-medium interface.
Solution Approach 2:
The patent applies local quality by creating non-uniform damping distribution across the slider structure. Specific regions of the slider are designed with varying damping characteristics to provide targeted protection at the head-medium contact zone while maintaining overall slider performance and data storage capacity.
2Ease of manufacture
If conventional slider designs are used, then manufacturing simplicity is maintained, but performance degradation occurs due to inability to mitigate physical reactions to operating variances
Solution Approach 1:
The patent applies parameter changes by modifying the damping characteristics of the slider through controlled variations in material properties, geometric parameters, or structural configuration. These parameter adjustments enable the slider to better withstand operating variances while remaining compatible with existing manufacturing processes.
3Reliability
If damping is increased to improve stability and contact handling, then head-medium contact detection capability is improved, but air bearing pressurization may be compromised
Solution Approach 1:
The patent applies local quality by creating spatially varying damping properties across the slider structure. This allows regions with different damping characteristics to be positioned strategically - providing enhanced damping where contact handling is needed while preserving air bearing pressurization in critical flight zones.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The optimized slider design enhances damping and pressurization, enabling robust head-medium contact handling and rapid recovery from contact events, maintaining data access accuracy and reliability despite reduced head overcoat thickness and thermal asperity interactions.
Implementation Method 1
Advanced air bearing slider
Implementation Method 2
allowing for increased damping and stability
Data Source
AI summary
A data storage device may be configured with a transducing head mounted to a slider. The slider may be suspended above a magnetic data storage medium and have a variable depth region, central rail wall, first wall, and trailing edge wall. The variable depth region continuously contacting a central rail wall from a first wall to a trailing edge wall.