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公开(公告)号:US06198704B1
公开(公告)日:2001-03-06
申请号:US09496654
申请日:2000-02-03
申请人: Yoshihito Fukushima , Jun Shimizu , Takeshi Gouko , Atsushi Takeuchi , Yuko Nakamura , Manabu Iwai
发明人: Yoshihito Fukushima , Jun Shimizu , Takeshi Gouko , Atsushi Takeuchi , Yuko Nakamura , Manabu Iwai
IPC分类号: G11B1100
CPC分类号: G11B11/10593 , G11B11/10515
摘要: A magneto-optical recording medium from which data is read by using a Kerr effect and which is capable of preventing signal imbalance caused from change in birefringence even in a system in which the amplitude of a reproduced signal is small and the spatial frequency of a shortest record signal train of the magneto-optical recording medium is 1.1×NA/&lgr;(line/m) or higher. The photoelastic coefficient of a substrate of the magneto-optical recording medium is 50×10−13 cm2/dyne or smaller. The vertical birefringence of the substrate is 250×10−6 or smaller, the coefficient of water absorption of the same is 0.2 wt % or lower and the thermal coefficient of expansion of the same is 6.5×10−5 cm/cm·° C. or lower.
摘要翻译: 一种磁光记录介质,通过使用克尔效应从中读取数据,并且即使在再现信号的幅度小,空间频率最短的系统中也能够防止由双折射变化引起的信号失衡 磁光记录介质的记录信号序列为1.1xNA / lambd(行/ m)以上。 磁光记录介质的基板的光弹性系数为50×10 13 cm 2 / dyne以下。 基板的垂直双折射率为250×10 -6以下,其吸水系数为0.2重量%以下,其热膨胀系数为6.5×10 -5 cm / cm。℃以下 。
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公开(公告)号:USD321869S
公开(公告)日:1991-11-26
申请号:US195014
申请日:1988-05-17
申请人: Yuko Nakamura
设计人: Yuko Nakamura
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公开(公告)号:USD308866S
公开(公告)日:1990-06-26
申请号:US134891
申请日:1987-12-18
申请人: Masayuki Kinoshita , Yuko Nakamura
设计人: Masayuki Kinoshita , Yuko Nakamura
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公开(公告)号:US4212942A
公开(公告)日:1980-07-15
申请号:US911231
申请日:1978-05-31
申请人: Yukio Miyazaki , Akira Shibata , Tateo Yahagi , Masayuki Hara , Kaoru Hara , Singo Yoneda , Hiroko Kasahara , Yuko Nakamura
发明人: Yukio Miyazaki , Akira Shibata , Tateo Yahagi , Masayuki Hara , Kaoru Hara , Singo Yoneda , Hiroko Kasahara , Yuko Nakamura
IPC分类号: C07D493/20 , C07H19/01 , C12P17/18
CPC分类号: C07H19/01 , C07D493/20 , C12P17/181
摘要: Polyether type antibiotics are produced by culturing a polyether type antibiotic-producing microorganism in a medium containing a fatty acid or its precursor and ammonia or an ammonium salt or urea.
摘要翻译: 聚醚型抗生素通过在含有脂肪酸或其前体和氨或铵盐或尿素的培养基中培养聚醚型抗生素生产微生物来制备。
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