A novel magnetic printing technique for perpendicular recording media

Saitô, Akira; Hamada, Tomoko; Ishida, T.; Takano, Y.; Yonezawa, E.

doi:10.1109/tmag.2002.801864

Cited by 23 publications

(4 citation statements)

References 4 publications

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“…There are two types of magnetic printing, which are bit printing and edge printing [1]. As been reported from previous study [1][2][3], sub-peaks of waveform from edge printed media are concerned as sub-peaks can cause errors during the read-back process. In this study, in order to reduce sub-peaks, the influence of printing field, bit length and patterned magnetic layer thickness of master medium on subpeaks is investigated by using a metal-evaporated (ME) tape as a slave medium.…”

Section: Introductionmentioning

confidence: 95%

Analysis of waveform from perpendicular magnetic printed media

Sheeda

Okami

Komine

et al. 2008

Journal of Magnetism and Magnetic Materials

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Section: Introductionmentioning

confidence: 95%

Analysis of waveform from perpendicular magnetic printed media

Sheeda

Okami

Komine

et al. 2008

Journal of Magnetism and Magnetic Materials

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“…Since the master does not need higher coercivity Hc , than that of the slave, it is possible to duplicate even to highrecording-density hard disks with high Hc This duplication is expected to resolve the problems of conventional servo-track writing (STW), such as STW time, writing cost, and precise writing [3,4]. Although many studies of the method have been conducted, most of them have involved micron-sized bits [5][6][7]. In addition, there have been no studies of how the method can be used to record high-density servo-patterns.…”

Section: Introductionmentioning

confidence: 99%

Performance and Potential of High-Density Bit Recording Using Patterned Master Contact Duplication

Nagao¹,

Nishikawa²,

Yasunaga³

et al. 2005

Trans.Magn.Soc.Jpn

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We investigated both the read/write performance for sub-micron bits and the possibility of recording servo-patterns of over 300 Gbits/in2 by using patterned master contact duplication, which is expected to resolve the problems of conventional servo-track writing. The experimental value of the spacing loss factors for sub-micron bits resulting from the duplication was around 20 dB, which was lower than that for reported conventional magnetic head recording. The reason for the low value is that the duplication suffers less from recording demagnetization because a static recording method is used and the S* value of the slave is high. A reading experiment involving duplication using a master disk with a track width of 190 nm and a bit length of 123 nm yielded a signal-to-noise ratio of 17.9 dB, which was a little larger than that of magnetic head recording. The simulation of a magnetic field to duplicate a high-density servo-pattern indicated that the magnetic field was large enough to record servo-patterns of as much as 370 Gbits/in2. These studies demonstrated the potential of this method for high-density servo-pattern recording.

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“…This magnetic printing technique designed for perpendicular recording media was demonstrated using hard-disk media with coercivity of 3000 Oe [4].…”

Section: Introductionmentioning

confidence: 99%

Magnetic printing technique for perpendicular thin-film media with coercivity of up to 10 000 Oe

2003

Self Cite

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A magnetic printing technique designed for perpendicular thin-film media using a lithographically formed master disk has been presented. It is shown that magnetic printing using perpendicular hard-disk media with high coercivities of up to 10 000 Oe is satisfactorily carried out and practical printing conditions for perpendicular recording media are discussed by analyzing differences in the magnetization processes during printing processes designed for perpendicular and longitudinal media.

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A novel magnetic printing technique for perpendicular recording media

Cited by 23 publications

References 4 publications

Analysis of waveform from perpendicular magnetic printed media

Analysis of waveform from perpendicular magnetic printed media

Performance and Potential of High-Density Bit Recording Using Patterned Master Contact Duplication

Magnetic printing technique for perpendicular thin-film media with coercivity of up to 10 000 Oe

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