Servo Write Head Curved Connecting Surfaces for High-Speed Tape Contact
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Solution Overview
Problem
High-speed transportation of magnetic tapes during servo signal writing leads to excessive spacing between the servo write head and the tape, resulting in insufficient servo signal intensity due to air entrainment, which affects the recording density and productivity.
Innovation Solution
A servo write head with a flat magnetic pattern writing surface, sloped surfaces, and connecting surfaces is designed to maintain optimal contact with the magnetic tape, featuring a contoured magnetic gap and grooves to manage air discharge, ensuring a sufficient signal intensity even at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the magnetic tape is transported at high speeds to improve productivity, then the productivity is improved, but excessive spacing is generated between the servo write head and the magnetic tape due to air entrainment, resulting in insufficient servo signal intensity
Solution Approach 1:
The patent applies curvature by forming connecting surfaces with a wrap angle between 1.16 and 90 degrees that smoothly connect the magnetic pattern writing surface to the sloped surfaces. This curved geometry allows the magnetic tape to follow the head contour during high-speed transport, maintaining intimate contact and preventing excessive spacing while enabling high-speed operation for improved productivity
2Productivity
If the magnetic tape is transported at high speeds, then the productivity is improved, but the spacing becomes too great, making the servo write head unable to write a servo signal with sufficient intensity
Solution Approach 1:
The curved connecting surfaces with specific wrap angles guide the magnetic tape to conform to the write head geometry, ensuring consistent spacing and reliable servo signal writing even at high transport speeds, thus maintaining manufacturing precision while improving productivity
Solution Approach 2:
The patent optimizes geometric parameters including the wrap angle of connecting surfaces (1.16-90 degrees) and the contour shape to match the servo pattern dimensions. These parameter adjustments ensure optimal magnetic coupling and signal intensity during high-speed operation
3Ease of manufacture
If a flat magnetic pattern writing surface is used, then the manufacturing is simplified, but excessive spacing is generated during high-speed transport due to air entrainment
Solution Approach 1:
The patent modifies the flat surface by adding curved connecting surfaces with wrap angles between 1.16 and 90 degrees that smoothly transition to sloped surfaces. This curved geometry actively manages air flow during high-speed transport, preventing excessive spacing while maintaining manufacturing simplicity through a single integrated head structure
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 ensures stable and efficient writing of servo signals with sufficient intensity on magnetic tapes during high-speed transportation by minimizing spacing and maintaining intimate contact between the servo write head and the tape, enhancing recording density and productivity.
Implementation Method 1
a magnetic gap contoured to correspond to the servo pattern
Implementation Method 2
The magnetic pattern writing surface is disposed to allow the magnetic tape to slidably contact therewith
Data Source
AI summary
A servo write head for writing a servo pattern on a magnetic tape is provided. A flat magnetic pattern writing surface has a magnetic gap contoured to correspond to the servo pattern, and is disposed to allow the magnetic tape to slidably contact therewith. Sloped surfaces are disposed upstream and downstream of the magnetic pattern writing surface in a magnetic tape transport direction at positions retreated from a position of the magnetic pattern writing surface. The sloped surfaces extend obliquely relative to the magnetic pattern writing surface. Connecting surfaces curved gently to smoothly connect the sloped surfaces to the magnetic pattern writing surface are disposed between the magnetic pattern writing surface and each of the sloped surfaces.