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41. 发明专利

JPH02165444A REWRITABLE TYPE OPTICAL DISK 失效
公开(公告)号：JPH02165444A
公开(公告)日：1990-06-26
申请号：JP31978288
申请日：1988-12-19
申请人： FUJITSU LTD
发明人： TADAKI SHINJI , NAKADA MASAHIRO , UCHIUMI KENICHI , ETSUNO NAGAAKI
IPC分类号： G11B7/24
摘要： PURPOSE:To impart interchangeability with a compact disk to the above disk by forming rewritable optical recording layers on tracks and high-reflectivity layers in the regions between the tracks of a substrate surface, respectively. CONSTITUTION:This optical disk is made into the construction consisting in selectively forming the rewritable optical recording layers 3 consisting of a material which causes a crystal phase transition by irradiation of light on the tracks 2 for recording information and coating at least the regions between the tracks 2 with the high-reflectivity layers 5 consisting of, for example, thin aluminum films having high reflectivity. The off-tracking optical signals of the level needed by a compact disk reproducing device are, therefore, obtd. if the optical head causes the off-tracking. The rewritable type optical disk having the interchangeability with the compact disk is obtd. in this way.

42. 发明专利

JPH02143923A METHOD FOR ERASING AND RECORDING OPTICAL DISK AND OPTICAL DISK DEVICE 失效
公开(公告)号：JPH02143923A
公开(公告)日：1990-06-01
申请号：JP29721588
申请日：1988-11-26
申请人： FUJITSU LTD
发明人： UCHIUMI KENICHI , ETSUNO NAGAAKI , NAKADA MASAHIRO , GOTO YASUYUKI , TSUGAWA IWAO
IPC分类号： G11B7/00 , G11B7/0055 , G11B7/30
摘要： PURPOSE:To improve the erasing rate of a phase changing type optical disk and to shorten the erasing time by setting the disk to an erasing state by transiting the recording layer of the disk to a quasistable state and to a writing state by transiting the layer to a balanced state. CONSTITUTION:When optical ON/OFF information is inputted to an erasing means 5 and writing means 6, an erasing area is decided in the means 5 by means of an erasing area deciding means 51 and the ON/OFF information is tentatively stored in a storing means 61 in the means 6. An indication indicating the recorded length of the ON/OFF information is added to the leading edge of the ON/OFF information and the area of a phase changing type optical disk corresponding to the indication is collectively erased by irradiating the area with high-power DC optical signals at high linear speed which is the optimum to set the area to an erasing state by transiting the recording layer of the area to be quasi stable state. Then writing is successively performed in the erased area by irradiating the area with low-power optical pulse signals at linear speed which is the optimum to set the area to a writing state by transiting the recording layer to a balance state. Therefore, the erasing rate is improved and, accordingly, the erasing time is shortened and the recording capacity is increased.

43. 发明专利

JPH02123522A METHOD FOR RECORDING AND ERASING COMPACT DISK COMPATIBLE TYPE REWRITABLE OPTICAL DISK 失效
公开(公告)号：JPH02123522A
公开(公告)日：1990-05-11
申请号：JP27619588
申请日：1988-11-02
申请人： FUJITSU LTD
发明人： UCHIUMI KENICHI , ETSUNO NAGAAKI , GOTO YASUYUKI , TSUGAWA IWAO , NAKADA MASAHIRO
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0055 , G11B7/30
摘要： PURPOSE:To attain addition while the information preservation life and signal quality are secured by using a phase change type rewritable optical disk, executing the recording and erasing at a lead-in area and executing the recording only at a program area. CONSTITUTION:For a compact disk, a recording area between a virtual line d1 and an outer diameter D2 is a program area 2 and a recording area between virtual lines d2 and d1 is a lead-in area 1. At the area 2, for example, like an actual music itself at the time of being a CD audio, the information taken out to the external part is recorded. At the area 1, for example, like the number of musics and the position of the head of respective musics, the contents information of the information recorded in the area 2 is recorded. At the time of adding to the area 2, simultaneously, the area 1 is also rewritten, and each time, the correct contents information is written. Thus, while the information preservation life and the signal quality are maintained to a high level, a CD compatible type rewritable optical disk can be added.

44. 发明专利

JPS63205832A OPTICAL DISK 失效
公开(公告)号：JPS63205832A
公开(公告)日：1988-08-25
申请号：JP3896287
申请日：1987-02-20
申请人： FUJITSU LTD
发明人： GOTO YASUYUKI , TSUGAWA IWAO , UCHIUMI KENICHI , SHIODA AKIRA , YUASA TETSUYA , ETSUNO NAGAAKI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To enhance sensitivity at the time of recording and erasing information by using a mixture composed of a metal component which induces a phase change when irradiated with laser light and org. compd. having a specific thermal decomposition temp. to form a recording layer provided on a transparent substrate. CONSTITUTION:The recording layer of an optical disk which is formed by laminating the recording and protective layer on a disk-shaped transparent substrate and records and erases the information by utilizing the phase changes induced in the recording layer according to the projection conditions of laser light is formed by using the mixture composed of the metal component which induces the phase change and the org. compd. having >=300 deg.C thermal decomposition temp. Such org. compd. is preferably phthalocyanine, fluoroplastic, etc. The mixture of the org. compd. with a recording medium is made by, for example, co-vapor deposition, etc., to form the recording layer, by which the heat conductivity is lowered and the decomposition is obviated at

45. 发明专利

JPS63197042A OPTICAL DISK 失效
公开(公告)号：JPS63197042A
公开(公告)日：1988-08-15
申请号：JP3004687
申请日：1987-02-12
申请人： FUJITSU LTD
发明人： TSUGAWA IWAO , GOTO YASUYUKI , UCHIUMI KENICHI , YUASA TETSUYA , ETSUNO NAGAAKI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/254 , G11B7/257
摘要： PURPOSE:To improve sensitivity and recorded information preserving property by forming the titled disk by using a heat resistant resin for an underlying layer and inorg. material having the higher hardness than heretofore for a protective layer. CONSTITUTION:A recording layer is provided via the underlying layer on a substrate having a disk shape and the protective layer is provided on the recording layer, by which the recording medium is formed. The disk is formed by using the heat resistant resin for the underlying layer and using the inorg. material having the hardness higher than heretofore for the protective layer. The material having the small difference in the refractive index between the substrate and the recording is used as the underlying layer, by which the total reflection quantity of incident light is decreased and the quantity of the incident light on the recording layer is increased. The protective layer shuts of the recording layer against the atm. and prevents the oxidation and contamination thereof by moisture. The optical disk which has the high sensitivity and decreases the deterioration in the recorded information is thereby obtd.

46. 发明专利

JPS6327588A RADIATION IMAGE CONVERSION PROCESS AND FLUORESCENT MATERIAL USED IN SAID PROCESS 失效
公开(公告)号：JPS6327588A
公开(公告)日：1988-02-05
申请号：JP16901786
申请日：1986-07-19
申请人： FUJITSU LTD , NEMOTO TOKUSHU KAGAKU KK
发明人： HIRANO HIROSHI , UCHIUMI KENICHI , ETSUNO NAGAAKI , OGAWA SEIYA , TAKEUCHI NOBUYOSHI
IPC分类号： C09K11/61 , G03B42/02 , G21K4/00
摘要： PURPOSE:To obtain a clear radiation image with reduced X-ray exposure, by absorbing radiation in a specific alkaline earth metal halide doped with bivalent Eu, irradiating the activated halide with electromagnetic radiation and detecting the emitted fluorescent light. CONSTITUTION:Radiation passed through or emitted from a specimen is absorbed in a fluorescent material consisting of an Eu -doped alkaline earth metal halide of formula (M is Ca, Sr or Ba; X and X' are Cl, Br or I; 0.5 ) and having an absorption band of complex color center of 700-1,500nm. The excited fluorescent material is irradiated with electromagnetic radiation of a wavelength range of 700-1,500nm. The excited fluorescent material is irradiated with electromagnetic radiation of a wavelength range of 700-1,500nm to release the accumulated radiation energy from the fluorescent material in the form of fluorescent light, which is detected to effect the conversion of radiation image.

47. 发明专利

JPS61175962A SIDE LOADING MECHANISM OF CARTRIDGE 失效
公开(公告)号：JPS61175962A
公开(公告)日：1986-08-07
申请号：JP1481085
申请日：1985-01-29
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HINADA SEIJI , UCHIUMI KENICHI , NISHIDA YASUHIDE , MIZUKAWA MAKOTO
IPC分类号： G11B15/68 , G11B15/675
摘要： PURPOSE:To insert and remove a cartridge to and from a recording and reproducing part to and from the longitudinal direction, by providing a transfer means for transferring a holder in the direction X between an inserting position and a tape running position, and a driving means of the direction Y for guiding and detaching the cartridge to a reference position of the direction Y in the holder. CONSTITUTION:A holder 80 moves in the direction X (running position direction) as guide rollers 71a-71d move along guide holes 70a, 70b by a driving engaging part 83 connected to a driving wire 74. Together with this movement,a setting lever 84 also turns in accordance with an inclined guide BS', and a cartridge 3 is pressed against engaging parts 80a, 80b provided on a reference position, and set to the reference position. In a stage that the holder 80 has been transferred to a running position in the direction X, the setting lever 84 presses the cartridge 3 against the reference position, and the end part of the cartridge 3 is abutted on the reference position use engaging parts 80a, 80b. Accordingly, the cartridge 3 is transferred in the direction X and also driven in the direction Y, and loaded to a reference position RS being a running position in the direction X and a running position in the direction Y.

48. 发明专利

JPS61134944A Optical information storage medium 失效
标题翻译：光信息存储介质
公开(公告)号：JPS61134944A
公开(公告)日：1986-06-23
申请号：JP25567384
申请日：1984-12-05
申请人： Fujitsu Ltd
发明人： MAEDA MIYOZO , ETSUNO NAGAAKI , GOTO YASUYUKI , SHIBATA ITARU , SHIODA AKIRA , UCHIUMI KENICHI , ITO KENICHI , IISHI KOUZOU
IPC分类号： B41M5/26 , G11B7/00 , G11B7/24 , G11B7/243 , G11B7/30 , G11C13/04
摘要： PURPOSE: To obtain an optical information storage medium which can vanish information recorded once and can be utilized repeatedly any number of times by using a microcrystalline thin film for storage capable of taking two kinds of stable state which undergo reversible transition when a light pulse is irradiated under proper conditions.
CONSTITUTION: Two kinds of stable state of a microcrystalline thin film are slightly different from each other in optical characteristics such as light reflectance and light transmittance, so an information recorded state and a vanished state can be discriminated as the difference in reflectance. Since the two kinds of stable state are accompanied by a little change in volume or film shape, the optical difference is equivalently increased. A material for a microcrystalline thin film capable of taking two or more kinds of stable state having different crystal structures and different optical characteristics includes a compound (alloy) consisting of 20W60 atomic% indium and 40W80 atomic% antimony.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了获得可以消除一次记录的信息的光信息存储介质，并且可以通过使用用于存储的微晶薄膜来重复使用任何次数，以便在照射光脉冲时能够采取经历可逆转变的两种稳定状态在适当的条件下。构成：微晶薄膜的两种稳定状态在诸如光反射率和透光率的光学特性中彼此稍有不同，因此信息记录状态和消失状态可被鉴别为反射率差。由于两种稳定状态伴随着体积或膜形状的一点变化，因此光学差异相当地增加。能够获得具有不同晶体结构和不同光学特性的两种或更多种稳定状态的微晶薄膜材料包括由20-60原子％铟和40-80原子％锑组成的化合物（合金）。

49. 发明专利

JPS61123027A Substrate for optical recording medium 失效
标题翻译：光记录介质基板
公开(公告)号：JPS61123027A
公开(公告)日：1986-06-10
申请号：JP24333884
申请日：1984-11-20
申请人： Fujitsu Ltd
发明人： MAEDA MIYOZO , UCHIUMI KENICHI , SHIBATA ITARU , IISHI KOUZOU , ETSUNO NAGAAKI
IPC分类号： G11B7/00 , G11B7/004 , G11B7/007 , G11B7/013 , G11B7/085
CPC分类号： G11B7/24085 , G11B7/085
摘要： PURPOSE:To make high-speed seek possible by writing additional information on an area interposed between two guide grooves adjacent to each other. CONSTITUTION:Track indication information 4 is written in various shapes on an area 3 interposed between two guide grooves 2 adjacent to each other on a substrate 1. The length of information 4 on the area 3 is varied to indicate properly information for a corresponding track. Since the overall peripheral part of the area 3 used only for tracking servo conventionally is used for write of track indication information, this information can be read and confirmed in any position on the track, and high-speed seek is made possible, and the quantity of write information is increased because the overall peripheral part of the guide groove 2 can be used for write of track information.
摘要翻译：目的：通过在相邻的两个引导槽之间插入的区域上写入附加信息来实现高速寻道。构成：轨迹指示信息4以介于彼此相邻的两个引导槽2之间的区域3上写入各种形状。区域3上的信息4的长度被改变以指示相应轨道的适当信息。由于仅用于跟踪伺服的区域3的整个周边部分被用于轨道指示信息的写入，所以可以在轨道上的任何位置读取和确认该信息，并且可以高速寻找数据的写入信息增加，因为引导槽2的整个周边部分可以用于写入轨道信息。

50. 发明专利

JPS59119559A Reel lock structure 失效
标题翻译：卷轴结构
公开(公告)号：JPS59119559A
公开(公告)日：1984-07-10
申请号：JP22832682
申请日：1982-12-27
申请人： Fujitsu Ltd
发明人： HINADA SEIJI , UCHIUMI KENICHI
IPC分类号： G03B21/43 , B65H16/04 , G11B15/32 , G11B15/66
CPC分类号： G11B15/662 , G11B15/32
摘要： PURPOSE:To fix surely a reel and to eliminate slipping or backlash at the time of moving such as start/stop, forward/back, by dividing the teeth of a reel hub into upper and lower parts, and fixing one and rotating another to eliminate backlash of the teeth of reel hub and the teeth inside of the reel. CONSTITUTION:Lower teeth 15 of the reel hub 14 are fixed to the shaft 13 of a motor 12 and upper teeth 16 are fixed to an end of an internal shaft 17. A cylindrical member 19 provided in the opposite side of the motor 12 is so structured that outside of the inside ball 18 is in contact with a cylindrical ring 20. The holding member of this ball 18 is fixed to an upper disk 21 fixed to the motor shaft 13. A member 23 having angular groove 22 that moves in contact with the inside of the ball 18 is fixed to an internal shaft 17 to which upper teeth 16 are fixed. The internal shaft 17 is fixed to a lower disk 24 with a nut 25 at the lower end of the internal shaft 17 so that the internal shaft 17 can move vertically inside of the motor shaft 13. A spring 26 always pushes down the lower disk 24.
摘要翻译：目的：要确保卷轴固定，并通过将卷轴轮毂的齿分为上下部件，在启动/停止，前进/后退等移动时消除滑动或间隙，并固定并旋转另一个以消除卷轴轮齿的齿隙和卷轴内齿的间隙。构成：卷轴14的下齿15固定在马达12的轴13上，上齿16固定在内轴17的一端。设置在马达12的相对侧的圆柱形构件19是如此构造为在内侧球体18的外侧与圆筒状环20接触。该球18的保持构件固定在固定于马达轴13的上部盘21上。具有与第球18的内部被固定到固定有上齿16的内轴17。内轴17通过在内轴17的下端处的螺母25固定到下盘24，使得内轴17能够在电动机轴13内垂直移动。弹簧26总是向下推动下盘24 。

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