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1. 发明申请

WO1994022139A1 MAGNETOOPTIC RECORDING METHOD, MAGNETOOPTIC RECORDING MEDIUM AND MAGENTOOPTIC RECORDING APPARATUS 审中-公开
标题翻译：磁记录记录方法，磁记录介质和磁记录记录装置
公开(公告)号：WO1994022139A1
公开(公告)日：1994-09-29
申请号：PCT/JP1994000411
申请日：1994-03-15
申请人： NIKON CORPORATION , SAITO, Jun , KURITA, Shinichi , YAMANAKA, Yoshihiro , MIYATA, Kazutomo
发明人： NIKON CORPORATION
IPC分类号： G11B11/10
CPC分类号： G11B11/1053 , G11B11/10506 , G11B11/10584 , G11B11/10595 , G11B20/1258
摘要： In magnetooptic recording, this invention compensates for the change of temperature rise/drop characteristics of a medium in a heating/cooling process with rise/fall of a laser beam depending on a relative speed between the laser beam and the recording medium. This invention accomplishes a high recording density and high access performance as the advantages of a Z-CAV system, and improves reliability when a high density recording is made in a CAV system, too. Specifically, the relative speed of the laser beam to the medium, that is, the linear velocity of the medium is related to the thermal time constant of the medium to determine the thermal time constant tau at that linear velocity. Information to be recorded is converted to a binary signal, and the magnetooptic medium is irradiated with an intensity-modified laser beam according to the binary signal so as to record information. Information of thermal time constants relating to the temperature change of the magnetooptic recording medium due to the laser irradiation are in advance recorded in the magnetooptic recording medium. A clock frequency (f) is controlled so that T/ tau , the ratio of the reciprocal T of the clock frequency (f) to the thermal time constant tau of the medium can be kept constant. The start and end positions of a mark can be accurately formed.
摘要翻译：在磁光记录中，本发明根据激光束和记录介质之间的相对速度补偿加热/冷却过程中介质的升温/降温特性随激光束的上升/下降的变化。本发明作为Z-CAV系统的优点而实现了高记录密度和高访问性能，并且在CAV系统中进行高密度记录时提高了可靠性。具体地，激光束到介质的相对速度，即介质的线速度与介质的热时间常数有关，以确定在该线速度下的热时间常数τ。要记录的信息被转换为二进制信号，并且根据二进制信号用强度修正的激光束照射磁光介质以便记录信息。关于由于激光照射引起的磁光记录介质的温度变化的热时间常数的信息被预先记录在磁光记录介质中。控制时钟频率（f），使得T / tau可以将时钟频率（f）的倒数T与介质的热时间常数τ的比率保持为常数。可以准确地形成标记的开始和结束位置。

2. 发明申请

WO1995010111A1 OPTICAL DISK RECORDING DEVICE 审中-公开
标题翻译：光盘记录装置
公开(公告)号：WO1995010111A1
公开(公告)日：1995-04-13
申请号：PCT/JP1994001670
申请日：1994-10-06
申请人： NIKON CORPORATION , YAMANAKA, Yoshihiro , SAITO, Jun , KURITA, Shinichi
发明人： NIKON CORPORATION
IPC分类号： G11B20/18
CPC分类号： G11B11/10504 , G11B7/0045 , G11B11/10515 , G11B11/10595 , G11B19/02 , G11B19/04 , G11B20/1879
摘要： An optical disk recording device such that the time required for checking data is reduced, and any extra head optical system is not needed. By detecting the disturbance of signal resulting from reflected light from an optical disk while signals are recorded on the optical disk, whether or not the signals are properly recorded on the optical disk can be judged while the signals are being recorded on the disk.
摘要翻译：一种光盘记录装置，使得检查数据所需的时间减少，并且不需要任何额外的头部光学系统。通过在信号被记录在光盘上时检测由来自光盘的反射光产生的信号的干扰，可以判断信号是否正确记录在光盘上，同时信号被记录在光盘上。

3. 发明专利

JPS6067128A EXTRUSION OF POLYCARBONATE RESIN ARTICLE 失效
公开(公告)号：JPS6067128A
公开(公告)日：1985-04-17
申请号：JP17602583
申请日：1983-09-22
申请人： YAMANAKA YOSHIHIRO
发明人： YAMANAKA YOSHIHIRO
IPC分类号： B29C47/00 , B29C47/82 , B29C47/86 , B29K69/00
摘要： PURPOSE:To obtain a profile article excellent in transparency, by extruding polycarbonate resin under specific conditions, by air-cooling the surface of the resin immediately, and by applying sizing and water-cooling thereto thereafter. CONSTITUTION:Polycarbonate resin is supplied to be extruded to an extruder in which the temperature inside a cylinder and the temperature near a die are set at about 260-270 deg.C and about 230-240 deg.C respectively, and an extruded article is air-cooled immediately after extrusion to cool down the surface thereof. Thereafter sizing and the water-cooling are applied thereto.

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