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Dive into the research topics where Hiroyuki Ohtaki is active.

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Featured researches published by Hiroyuki Ohtaki.


electronic imaging | 2000

Development of peripheral materials for color graphic arts holograms

Hiroyuki Ohtaki; Masachika Watanabe; Daijiro Kodama; Fumiko Noujima; Kenji Ueda

Dai Nippon Printing is the first company in the world to succeed in the mass production of full-color 3D Lippmann type holograms, which are marketed under the name of TRUE IMAGETM. TRUE IMAGETM labels consist of a panchromatic photopolymer material and pressure-sensitive adhesives (PSAs). This new medium is expected to have wide application in various fields, such as publishing, labels for authentication, and so on. For commercial use, TRUE IMAGETM labels require high-quality PSAs. In this study, two new PSAs and a new layer structure were developed. One PSA provides TRUE IMAGETM labels with good environmental stability, and the other adjusts the playback wavelengths. These two PSAs together with a new layer structure have enabled the development of a new type of TRUE IMAGETM label for security applications.


Archive | 1999

Volume hologram laminate and label for preparing volume hologram laminate

Akio Morii; Satoru Hamada; Hiroyuki Ohtaki; Kenji Ueda; Shingo Nishikawa


Archive | 2002

Hologram laminate and hologram label

Miwa Ishimoto; Masachika Watanabe; Hiroyuki Ohtaki; Kenji Ueda


Archive | 1997

Multilayered volume hologram structure, and label for making multilayered volume hologram structure

Akio Morii; Satoru Hamada; Hiroyuki Ohtaki; Kenji Ueda; Shingo Nishikawa


Archive | 2001

Multilayer volume hologram, and label for multilayer volume hologram fabrication

Tetsuya Toshine; Hirotada Ohkawa; Hiroyuki Ohtaki; Kenji Ueda; Fumiko Noujima


Archive | 1999

Volume hologram laminate

Hiroyuki Ohtaki; Kenji Ueda


Archive | 2006

Volume hologram photosensitive composition

Minoru Azakami; Yoshihito Maeno; Hiroyuki Ohtaki


Archive | 2005

Laser marking hologram and hologram-oriented laser marking method

Masachika Watanabe; Kenji Ueda; Hiroyuki Ohtaki


Archive | 2007

Pressure-sensitive adhesive compositon for optical filter, optical filter, and display device

Yuka Hiwatashi; Toshio Yoshihara; Yudai Yamashita; Hiroyuki Ohtaki


Archive | 2004

Photosensitive composition for volume hologram recording

Yoshihito Maeno; Hiroyuki Ohtaki; Toshio Yoshihara; Junichiro Ihara; Fumio Matsui

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