TRIZ Paper: Japan TRIZ Symposium 2008 Presentation


Problems to be solved and Technological Evolution of Magnetic Recording Media
Hiroyuki Suzuki (Hitachi, Ltd., Central Research Laboratory)
The Fourth TRIZ Symposium in Japan, Held by Japan TRIZ Society on Sept. 10-12, 2008 at Laforet Biwako, Moriyama, Shiga, Japan
Introduction by Toru Nakagawa (Osaka Gakuin Univ.), Oct. 26, 2008
[Posted on July 10, 2009] 

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Editor's Note (Toru Nakagawa, Jul. 8, 2009)

This paper was presented at the Fourth TRIZ Symposium in Japan, 2008 , which was held last September by 'Japan TRIZ Society, NPO'. 

Japan TRIZ Society has posted the presentation files (in Japanese) of all the Contributed Presentations in the 'Members-Only' area of its Official Web site (http://www.triz-japan.org/ ) in PDF on July 1, 2009.  Files in English are going to be posted in a similar way.

The present site, "TRIZ Home Page in Japan", on the other hand, is going to post several selected Contributed Presentations publicly, under the desire & permisson by the Authors.  Presentation slides of them will be posted in PDF, with the policy of updating prohibited, copying and printing permitted.

Last week (Jun. 26) at the Japan TRIZ Society's Board Member meeting, Toshihiro Hayashi, formerly working for Hitachi, told us "Mr. Hiroyuki Suzuki has passed away just a few days ago."  It was a surpise for us all.  At the Japan TRIZ Symposium last September, he presented his Poster paper actively and he supported several Japanese presenters for brushing up the English translation of their slides.  We deeply regret his too early death.  While editing this Web page, I have found that Mr. Suzuki was such a reserved person to choose the Poster presentation of this paper, for which he submitted the full papers both in English and in Japanese besides the requested slides.  Thus these slides and papers are the ones left for us by the late Hiroyuki Suzuki.  We are very grateful for him for his work and we heartily wish the heavenly peace for him and for his family.

This page in English contains: (a) Abstract of the paper, (b) Slides in PDF, (c) Full paper in PDF, and (d) Introduction by Nakagawa.  The corresponding page in Japanese similarly contains: (a) Abstract of the paper, (b) Slides in PDF , (c) Full paper in PDF , and (d) Introduction by Nakagawa.  The Introduction (d) is an excerpt of Toru Nakagawa's "Personal Report of The Fourth TRIZ Symposium in Japan, 2008" which was posted in this Web site in English on Oct. 26, 2008.   


[1] Abstact

Problems to be solved and Technological Evolution of
Magnetic Recording Media
Hiroyuki Suzuki (Hitachi, Ltd., Central Research Laboratory)

Abstract
Magnetic recording medium using metal thin film has been developed by both wet and dry plating deposition. In this paper, dry deposition, especially, physical vapor deposition is focused. Preliminary sputtered disk for longitudinal magnetic recording was developed in the 1970s. In the five patents spanning the evolution of longitudinal recording media from its early stages to the end of its development, the transforming of a single magnetic layer into a multilayer was proposed to reduce media noise and thermal fluctuation. This was a trend that included at least three inventive principles such as “Segmentation of the recording layer and underlayer,” “Move to a new dimension,” and “Composite materials.”


[2]  Presentation Slides in PDF

Presentation Slides in English in PDF (11 slides, 116 KB)

Full Paper in English in PDF (6 pages, 271 KB)

Presentation Slides in Japanese in PDF (11 slides, 144 KB)

Full Paper in Japanese in PDF (5 pages, 307 KB)


[3]  Introduction to the Presentation (by Nakagawa)

Excerpt from: 
Personal Report of The Fourth TRIZ Symposium in Japan, 2008
by Toru Nakagawa (Osaka Gakuin University), Oct. 26, 2008
Posted on Oct. 26, 2008 in "TRIZ Home Page in Japan"

Hiroyuki Suzuki (Hitachi Co., Ltd.) [P-B2 #27] gave a Poster presentation with the title of "Problems to be solved and Technological Evolution of Magnetic Recording Media".   I will show you the Author's abstract here.

Magnetic recording medium using metal thin film has been developed by both wet and dry plating deposition. In this paper, dry deposition, especially, physical vapor deposition is focused. Preliminary sputtered disk for longitudinal magnetic recording was developed in the 1970s. In the five patents spanning the evolution of longitudinal recording media from its early stages to the end of its development, the transforming of a single magnetic layer into a multi-layer was proposed to reduce media noise and thermal fluctuation. This was a trend that included at least three inventive principles such as “Segmentation of the recording layer and underlayer,” “Move to a new dimension,” and “Composite materials.”

The evolution of the technology in this field is discussed by using 5 patents developed during 1986 and 2005.  The following figure summarizes the layer structures of the 5 media.  The Author and his group worked for developing these media.  Thus the Author' discussions on the meaning/intention of the specific new technology and on how such technologies were invented are worthy of reading.  *** I do not have enough space here to introduce his discussions.  Fortunately, the full set of presentation slides and full paper will be posted in English in this Web site in the near future.

 

Top of this page Abstract Slides in PDF Full paper in PDF Nakagawa's Introduction Japan TRIZ Symp. 2008 Nakagawa's Personal Report of Japan TRIZ Symp. 2008 Japanese page

 

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Last updated on Jul. 10, 2009.     Access point:  Editor: nakagawa@ogu.ac.jp