Presentation 1995/8/25
Large Capacity Floppy Disk with New Servo System
Ryuichi Yoshiyama, Yuzo Seo, Toshihiko Kuriyama, Yoji Arita,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) A floppy disk drive employing simplified continuous servo system with optical servo signal detector was developed. The servo detector consists of a couple of laser and photo diodes, and both of them are built in upper and lower conventional transducing heads, respectively. Trenches to prevent head floating from media surface were introduced at the slider surface. This enabled good read/write characteristics at the spindle rotational speed up to 2500rpm. Barium ferrite media having dye layer between laminated base films was also developed and servo signal was written on the dye layer by using 830nm laser beam. Using the barium ferrite of 1250 Oe coercive force and MIG head, 45 kFRPI D_<50> of the linear density was obtained. From these results, 128 MB large capacity of 3.5 inch floppy disk will be expected to realize for practical use.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) floppy disk / continuous servo / narrow track magnetic recording
Paper #
Date of Issue

Conference Information
Committee MR
Conference Date 1995/8/25(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To Magnetic Recording (MR)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Large Capacity Floppy Disk with New Servo System
Sub Title (in English)
Keyword(1) floppy disk
Keyword(2) continuous servo
Keyword(3) narrow track magnetic recording
1st Author's Name Ryuichi Yoshiyama
1st Author's Affiliation Mitsubishi Chemical Corporation Yokohama Research Center()
2nd Author's Name Yuzo Seo
2nd Author's Affiliation Mitsubishi Chemical Corporation Yokohama Research Center
3rd Author's Name Toshihiko Kuriyama
3rd Author's Affiliation Mitsubishi Chemical Corporation Yokohama Research Center
4th Author's Name Yoji Arita
4th Author's Affiliation Mitsubishi Chemical Corporation Yokohama Research Center
Date 1995/8/25
Paper #
Volume (vol) vol.95
Number (no) 220
Page pp.pp.-
#Pages 6
Date of Issue