Segmented Magnetic Head Surface for Friction-Reduced Servo Recording
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Solution Overview
Problem
The recording accuracy of servo patterns on magnetic tapes is compromised due to friction between the servo write head and the magnetic tape, especially as the number of recording tracks increases, necessitating improved alignment and accuracy.
Innovation Solution
A servo write head with a recording surface featuring a first region with a magnetic gap and a second region without, incorporating groove portions and notch configurations to minimize friction and enhance contact stability, allowing for precise servo pattern recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of recording tracks is increased to achieve high-density recording, then the storage capacity is improved, but the recording accuracy of servo patterns deteriorates due to friction between the servo write head and magnetic tape
Solution Approach 1:
The recording surface is divided into a first region with a magnetic gap for recording and a second region without a magnetic gap that contacts the magnetic tape. This segmentation allows the head to both record servo patterns accurately and maintain stable contact through friction in the second region, resolving the contradiction between high track density and recording accuracy
Solution Approach 2:
Different regions of the recording surface are given different properties: the first region has a magnetic gap for precise pattern recording while the second region has direct contact for stable friction-based positioning. This local differentiation enables simultaneous achievement of high track density and accurate servo pattern recording
2Measurement precision
If friction between the servo write head and magnetic tape is increased to improve contact stability, then the alignment accuracy is improved, but the recording accuracy of servo patterns deteriorates due to excessive friction
Solution Approach 1:
The recording surface is segmented into two functional regions: the first region with a magnetic gap that minimizes friction for accurate servo pattern recording, and the second region without a gap that provides controlled friction for stable contact and alignment. This segmentation resolves the contradiction between alignment accuracy and recording accuracy
Solution Approach 2:
Different local regions are assigned different friction characteristics: the second region has higher friction for stable contact maintenance while the first region has lower friction for precise pattern deposition. This local quality differentiation enables simultaneous optimization of both alignment and recording accuracy
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 design reduces frictional errors, enabling accurate recording of servo patterns even with high track densities, ensuring stable contact and improved alignment for high-capacity magnetic tapes.
Implementation Method 1
a recording surface having a first region corresponding to a position where a magnetic gap is provided
Data Source
AI summary
A magnetic head according to an embodiment of the present technology includes: a recording surface that has a first region corresponding to a position where a magnetic gap is provided in a length direction, and a second region corresponding to a position where the magnetic gap is not provided in the length direction, a plurality of groove portions crossing from one end in a width direction orthogonal to the length direction to the other end in the width direction being provided in the second region, and records a signal on a magnetic tape with the magnetic gap.