公开(公告)号：US20080013440A1

公开(公告)日：2008-01-17

申请号：US11768499

申请日：2007-06-26

申请人： Ryosuke YAMAMOTO ,  Masaaki Matsumaru ,  Kazuyo Umezawa ,  Koji Takazawa ,  Seiji Morita ,  Naomasa Nakamura ,  Hideo Ando

发明人： Ryosuke YAMAMOTO ,  Masaaki Matsumaru ,  Kazuyo Umezawa ,  Koji Takazawa ,  Seiji Morita ,  Naomasa Nakamura ,  Hideo Ando

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B7/00736 ,  G11B7/24079 ,  G11B7/24082 ,  G11B20/1217 ,  G11B2007/0013 ,  G11B2220/235 ,  G11B2220/2537

摘要： According to one embodiment, an information recording medium has two or more recording layers, the track pitch falls within the range from 250 to 500 nm, and the half maximum full-width of the groove of the substrate falls within the range from 47.5% to 72.5%.

公开(公告)号：US20120243396A1

公开(公告)日：2012-09-27

申请号：US13488514

申请日：2012-06-05

申请人： Kazuyo Umezawa ,  Seiji Morita ,  Koji Takazawa ,  Hideo Ando ,  Yasuaki Ootera ,  Naomasa Nakamura ,  Naoki Morishita

发明人： Kazuyo Umezawa ,  Seiji Morita ,  Koji Takazawa ,  Hideo Ando ,  Yasuaki Ootera ,  Naomasa Nakamura ,  Naoki Morishita

IPC分类号： G11B7/00 ,  G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/126 ,  G11B2007/0013

摘要： According to one embodiment, single-sided dual-layer recordable disc 100 may be used. Information recording is performed by forming mark and space portions on data area DA using modulated laser power. Pp denotes the maximum laser power or peak power for forming the mark portion, and Pb denotes the bias power for forming the space portion. Power ratio Pb/Pp is calculated for each of recording layers L0 and L1. Information is recorded on any of the recording layers L0 and L1 based on the result of calculation. Here, the calculated power ratio Pb/Pp changes among the recording layers L0 and L1, thereby optimizing the recording condition for a multi-layer recordable optical disc within relatively short time.

公开(公告)号：US20120195179A1

公开(公告)日：2012-08-02

申请号：US13443486

申请日：2012-04-10

申请人： Kazuyo UMEZAWA ,  Seiji Morita ,  Koji Takazawa ,  Hideo Ando ,  Yasuaki Ootera ,  Naomasa Nakamura ,  Naoki Morishita

发明人： Kazuyo UMEZAWA ,  Seiji Morita ,  Koji Takazawa ,  Hideo Ando ,  Yasuaki Ootera ,  Naomasa Nakamura ,  Naoki Morishita

IPC分类号： G11B7/0045

CPC分类号： G11B7/2467 ,  G11B7/00456 ,  G11B7/246 ,  G11B7/249 ,  G11B7/2495 ,  G11B2007/0006

摘要： According to one embodiment, a re-recordable write-once optical disc by which recording/reproducing can be properly done with a short-wavelength blue laser is provided. The disc has recording layers on which marks are recorded by the laser power of a modulated short wavelength, with a space formed between the recorded marks. The recording layer of the disc uses an organic dye material by which no physical modification or no physical change substantially occurs in an area of the recorded marks.

摘要翻译： 根据一个实施例，提供了可以用短波长蓝色激光器适当地进行记录/再现的可再记录的一次写入光盘。 盘具有通过调制的短波长的激光功率记录标记的记录层，在记录的标记之间形成空间。 盘的记录层使用有机染料材料，在记录标记的区域中基本上不发生物理改变或没有物理变化。

公开(公告)号：US08174948B2

公开(公告)日：2012-05-08

申请号：US13093198

申请日：2011-04-25

申请人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

摘要翻译： 根据一个实施例，提供了一种光记录介质，其中层间串扰低，并且其中可以获得稳定和高质量的记录特性。 为此，光学记录介质包括第一记录部分，该第一记录部分包括第一记录层和第一光反射层，并且设置在靠近光接收表面的一侧;以及第二记录部分，其包括第二记录层 和第二光反射层，并且其被布置在离光接收表面更远的一侧，第一记录部分和第二记录部分被堆叠，其中第二光反射层的厚度大于第一光的厚度 反射层。

公开(公告)号：US08159920B2

公开(公告)日：2012-04-17

申请号：US13091241

申请日：2011-04-21

申请人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

公开(公告)号：US08149674B2

公开(公告)日：2012-04-03

申请号：US13090743

申请日：2011-04-20

申请人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji Takazawa ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

公开(公告)号：US20110199878A1

公开(公告)日：2011-08-18

申请号：US13093425

申请日：2011-04-25

申请人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/007 ,  G11B7/00

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

公开(公告)号：US20110199870A1

公开(公告)日：2011-08-18

申请号：US13093256

申请日：2011-04-25

申请人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/007 ,  G11B7/085

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

公开(公告)号：US20110194383A1

公开(公告)日：2011-08-11

申请号：US13091396

申请日：2011-04-21

申请人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

发明人： Koji TAKAZAWA ,  Seiji Morita ,  Kazuyo Umezawa ,  Naoki Morishita ,  Yasuaki Ootera ,  Hideo Ando ,  Naomasa Nakamura

IPC分类号： G11B7/007 ,  G11B7/085

CPC分类号： G11B7/258 ,  G11B7/00452 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/246 ,  G11B7/259 ,  G11B2007/0013

摘要： According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer.

公开(公告)号：US20070286980A1

公开(公告)日：2007-12-13

申请号：US11810586

申请日：2007-06-06

申请人： Yasuaki Ootera ,  Kazuyo Umezawa ,  Koji Takazawa ,  Naoki Morishita ,  Hideo Ando ,  Seiji Morita ,  Naomasa Nakamura

发明人： Yasuaki Ootera ,  Kazuyo Umezawa ,  Koji Takazawa ,  Naoki Morishita ,  Hideo Ando ,  Seiji Morita ,  Naomasa Nakamura

IPC分类号： B32B3/02

CPC分类号： B32B3/02 ,  G11B7/00451 ,  G11B7/00455 ,  G11B7/00736

摘要： Manufacturing of a higher quality write-once type multilayer optical disc is facilitated. The optical disc includes a plurality of recording layers in which recording or reproduction is carried out by a blue or blue-violet laser beam of a wavelength of about 405 nm. Each of the recording layers includes a recording layer which uses an organic dye. The plurality of recording layers includes a layer in which a groove pattern around a recording mark is deformed when information is recorded, and a layer in which the groove pattern around the recording mark is not deformed when information is recorded.

摘要翻译： 制造更高质量的一次写入型多层光盘便利。 光盘包括多个记录层，其中通过约405nm的波长的蓝色或蓝紫色激光束进行记录或再现。 每个记录层包括使用有机染料的记录层。 多个记录层包括当记录信息时围绕记录标记的凹槽图案变形的层，以及当记录信息时在记录标记周围的凹槽图案不变形的层。