公开(公告)号：US5420832A

公开(公告)日：1995-05-30

申请号：US148996

申请日：1993-11-08

申请人： Kazuo Shigematsu ,  Yoji Tomono ,  Atsushi Ichikawa ,  Toshiyasu Hattori

发明人： Kazuo Shigematsu ,  Yoji Tomono ,  Atsushi Ichikawa ,  Toshiyasu Hattori

IPC分类号： G11B20/12 ,  G11B7/00 ,  G11B7/004 ,  G11B7/09 ,  G11B7/13 ,  G11B11/10 ,  G11B11/105 ,  G11B25/04 ,  G11B27/00 ,  G11B11/00

CPC分类号： G11B7/131 ,  G11B11/10545 ,  G11B11/10554 ,  G11B11/1056 ,  G11B11/10597 ,  G11B25/043 ,  G11B7/0943 ,  G11B7/133 ,  G11B11/10543

摘要： An optical disk recording and/or reproducing apparatus is provided which is capable of storing a large amount of information, transferring data at a high speed, supporting SCSI-1 and SCSI-2, and the reducing the size of the apparatus, particularly the height (to the so-called half height), The magnetooptical-disk recording and/or reproducing apparatus of the invention is of the same size as that of the 5.25-inch magnetic disk recording and/or reproducing apparatus of half height, or it is 146 mm wide, 203 mm deep, and 41.3 mm high. The front panel 1 has the cartridge slot 2 and cartridge ejection button 3 provided thereon so that a cartridge including a disk for recording and reproducing information is inserted in or ejected from the apparatus. The cartridge insertion slot 2 has a double flap provided so that at least one part of the double flap closes the slot, preventing dust from entering through the cartridge slot 2 except when the cartridge is inserted in or ejected from the apparatus, According to this invention, the magnetooptical-disk recording and/or reproducing apparatus can record information of 1 GB/side or above on the disk and has the size of half height.

摘要翻译： 提供了一种光盘记录和/或再现装置，其能够存储大量信息，高速传输数据，支持SCSI-1和SCSI-2，并且减小了装置的尺寸，特别是高度 （到所谓的半高）。本发明的磁光盘记录和/或再现装置的尺寸与半高的5.25英寸磁盘记录和/或再现装置的尺寸相同，或者是 宽146mm，深203mm，高41.3mm。 前面板1具有设置在其上的盒插槽2和盒弹出按钮3，使得包括用于记录和再现信息的盘的盒被插入或从装置中弹出。 盒插入口2具有双瓣，其设置成使得双折片的至少一部分封闭狭槽，除了当盒被插入或从装置中排出之外，防止灰尘进入盒狭槽2。根据本发明 ，磁光盘记录和/或再现装置可以在盘上记录1GB /侧或更高的信息，并且具有一半高度的大小。

公开(公告)号：US5031172A

公开(公告)日：1991-07-09

申请号：US291323

申请日：1988-12-28

申请人： Jun-ichi Umeda ,  Kazuo Shigematsu

发明人： Jun-ichi Umeda ,  Kazuo Shigematsu

IPC分类号： G11B7/257 ,  G11B7/24 ,  G11B7/241 ,  G11B7/26

CPC分类号： G11B7/26 ,  G11B7/241 ,  G11B7/2575 ,  G11B2007/24306 ,  G11B7/252 ,  G11B7/2531

摘要： An optical recording disc comprising a resin layer of resin material formed on a relatively rough surface of each transparent disc substrates, the resin material having approximately the same refractive index of light as the refractive index of the transparent disc substrate, and a recording layer formed on each of said resin layers. Accordingly, the optical recording disc enables a decrease in production costs and to write and read an information signal into and from the recording layer at an improved signal to noise ratio as compared to a conventional optical recording disc.

摘要翻译： 一种光学记录盘，包括形成在每个透明盘基片的较粗糙表面上的树脂材料树脂层，所述树脂材料具有与透明盘基片的折射率大致相同的光的折射率，以及形成在 每个所述树脂层。 因此，与传统的光记录盘相比，光记录盘能够降低生产成本，并以更好的信噪比将信息信号写入记录层并从记录层读取信息信号。

公开(公告)号：US4348461A

公开(公告)日：1982-09-07

申请号：US160661

申请日：1980-06-18

申请人： Motoyasu Terao ,  Yoshio Taniguchi ,  Shinkichi Horigome ,  Masahiro Ojima ,  Kazuo Shigematsu ,  Keizo Kato ,  Yoshinori Miyamura ,  Seiji Yonezawa

发明人： Motoyasu Terao ,  Yoshio Taniguchi ,  Shinkichi Horigome ,  Masahiro Ojima ,  Kazuo Shigematsu ,  Keizo Kato ,  Yoshinori Miyamura ,  Seiji Yonezawa

IPC分类号： B41M5/26 ,  G03C1/705 ,  G11B7/24 ,  G11B7/243 ,  B32B5/14

CPC分类号： G11B7/243 ,  G03C1/705 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10S428/913 ,  Y10S430/146 ,  Y10S430/165 ,  Y10T428/31

摘要： A recording member having a predetermined substrate, and a thin film which is formed on the substrate and which is formed with recesses or pits for recording information when irradiated with a working beam, characterized in that said thin film is formed of an inorganic material which contains at least arsenic, selenium and tellurium, and that a distribution of either of said Se and said Te decreases from a part near the surface of said thin film towards a central part thereof, while a distribution of said As increases from a part near the surface towards said central part, is disclosed. This recording member can afford a high signal-to-noise ratio and a long lifetime. It is preferable that the distribution of said Se decreases so as to be at least 50 atomic-% in terms of the content of said Se in a part being the closest to the surface of said thin film and to be at most 40 atomic-% in terms of the average content of said Se over the whole thin film, and that the distribution of said As increases so as to be at most 15 atomic-% in terms of the content of said As in the closest part and to be 5 to 35 atomic-% in terms of the average content of said As in said whole thin film. The Se-Te-As-based material may well be doped with at least one element selected from the group consisting of Ge, S, Tl, Sn, Pb, In and Ta, within a range of 2 to 15 atomic-%.

摘要翻译： 具有预定基板的记录部件和形成在基板上并且在用工作光束照射时用于记录信息的凹坑或凹坑形成的薄膜，其特征在于，所述薄膜由无机材料形成，所述无机材料包含 至少砷，硒和碲，并且所述Se和所述Te中的任一个的分布从所述薄膜的表面附近的部分向其中心部分减少，而所述As的分布从表面附近的部分增加 朝向所述中心部分。 该记录部件可以提供高的信噪比和长的使用寿命。 优选所述Se的分布以与所述薄膜表面最接近的部分中的所述Se的含量为至少50原子％，并且为至多40原子％ 就所述Se在整个薄膜上的平均含量而言，所述As的分布以所述As在最接近的部分的含量为最多为15原子％，并且为5〜 在所述整个薄膜中，所述As的平均含量为35原子％。 可以在2至15原子％的范围内掺杂选自由Ge，S，Tl，Sn，Pb，In和Ta组成的组中的至少一种元素的Se-Te-As基材料。