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21. 发明专利

JPH06349116A DEVICE FOR MANUFACTURING OPTICAL DISK 失效
公开(公告)号：JPH06349116A
公开(公告)日：1994-12-22
申请号：JP13211193
申请日：1993-06-02
申请人： SONY CORP
发明人： NAITO HIROSHI , KOJIMA KOICHI , TOMIYAMA HIROSHI , INAGAKI TAKAO
IPC分类号： G11B7/26
摘要： PURPOSE:To prevent the mixture of optical disks between lots from occurring as much as possible even at the time of continuously simultaneously manufacturing two lots of optical disks with contents different from each other. CONSTITUTION:This device is constituted so that at the time of simultaneously manufacturing disks with contents different from each other, by a controller 71, when the fact that no disk exists in a next process (block C) is decided based on the number of sheets c (c=c1+c2+...+c5) of disks supplied from a disk number of sheets detection circuit, the transfer of a swing arm 40 is switched from a buffer 9 side to a bar code reader 41 side. Thus, since only the optical disk of a next lot is stored in the buffer 9, and no optical disk of a present lot exists in the next process (block C containing a printer 1), the fact that the optical disks of the present lot and the next lot are mixed in the next process (block C containing the printer 1) is prevented.

22. 发明专利

JP2003177823A ROTATION CONTROLLER AND ROTATION CONTROL METHOD AND OPTICAL DISK MASTER EXPOSURE DEVICE 审中-公开
公开(公告)号：JP2003177823A
公开(公告)日：2003-06-27
申请号：JP2001374597
申请日：2001-12-07
申请人： SONY CORP
发明人： SUZUKI AKITOSHI , INAGAKI TAKAO
IPC分类号： G08C23/04 , G05D3/12 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To provide a rotation controller, a rotation control method, and an optical master disk exposure device, capable of reducing a position detection error due to the superimpose of noise in a rotation control system to be used for the master disk recording of an optical disk and realizing the high precision of the rotation control. SOLUTION: An optical beam irradiation device is provided with: a rotational position detector 20 for detecting the rotational position of a master disk 3 and outputting a detection signal; a control circuit 24 for supplying the control signal of an optical signal or an electric signal to the rotational position detector 20 and supplying a driving signal for driving rotation to a rotary motor 4 based on the detection signal of the optical signal from the rotational position detector 20; and uni-directional or bi-directional optical fiber cables 25 and 26 disposed between the rotational position detector 20 and the control circuit 24. Thus, the optical transmission of a signal related with the detection of the rotational position is executed so that the influence of any electrical noise on the transmission path can be reduced, and that the precision of the rotation control can be improved. COPYRIGHT: (C)2003,JPO

23. 发明专利

JP2002260295A ELECTRON BEAM IRRADIATION DEVICE 失效
公开(公告)号：JP2002260295A
公开(公告)日：2002-09-13
申请号：JP2001054740
申请日：2001-02-28
申请人： SONY CORP
发明人： SASAKI JUN , SUZUKI AKITOSHI , MUKAI NOBUHIKO , INAGAKI TAKAO
IPC分类号： G11B9/10 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To avoid hazardous effects of the electric field of an electromagnetic motor on the electron beam radiated to an original (irradiated object) for recording in an electron beam irradiation device and obtain high precision movement control of the beam in the radial direction on the original. SOLUTION: In an electron beam irradiation device of a partial vacuum system that vacuumizes a part on an original 1 to radiate the beam, the electromagnetic motor 9 to rotate the original 1 and the electromagnetic motor to move the original 1 radially are covered wholly with a magnetic enclosure 30 for magnetic shielding.

24. 发明专利

JPH09115186A OPTICAL INFORMATION RECORDING MEDIUM AND ITS RECORDING AND/OR REPRODUCING DEVICE 失效
公开(公告)号：JPH09115186A
公开(公告)日：1997-05-02
申请号：JP26825995
申请日：1995-10-17
申请人： SONY CORP
发明人： ENDOU FUSAAKI , INAGAKI TAKAO
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To make a display such as sign, bar code and pattern, etc., showing the recording contents of a recorded information signal invisible and to prevent illegal copy by providing an interference area constituted of plural interference grooves on a substrate. SOLUTION: This optical disk is constituted by successively laminating a disk substrate, an information signal layer, a reflection film and a protection film. A signal recording area and the interference area 3B are provided on the substrate, and a pit being the information signal is recorded on the signal recording area. The interference area 3B is provided out of the signal recording area, and is constituted of plural interference grooves 9 making light interfere with each other, and forms only the outline of the display showing the recording contents of the information signal recorded on the signal recording area. And, since the display is narrow in the area causing a difference in luminance, it is invisible by the naked eye, thereby, the illegal copy is prevented.

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