Magnetic Tape Deformation due to Wear Debris and Its Influence on Spacing Loss

Takashi YOSHIZAWA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E81-C   No.3   pp.349-355
Publication Date: 1998/03/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electromechanical Devices and their Surface Science)
Category: 
Keyword: 
magnetic tape,  deformation,  wear debris,  dust,  spacing loss,  head/tape contact,  signal dropout,  

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Summary: 
The tape deformation due to such particles as wear debris and dust in the head/tape contact region is one of the main causes of the signal quality deterioration in magnetic tape devices. Thus it is significant to make clear the tape deformation due to a particle for realizing higher recording densities. This paper investigates the tape deformation profile generated by a particle through an interferometric experiment and a simulation using a point loaded tape model. A rather good agreement between them is obtained, thereby the simulation is verified appropriate to estimate the tape deformation due to a particle. This paper also describes the relationship between the spacing loss and the particle height, considering the tape deformation profile obtained from the simulation. In addition, the influence of the particle height on the width of the tape deformed area is estimated, which can make a basis of the design of error correction code.