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1. 发明授权

US5513817A Servo system 失效
公开(公告)号：US5513817A
公开(公告)日：1996-05-07
申请号：US360209
申请日：1994-12-20
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/00 , G11B15/43 , G11B15/60 , B65H20/00 , B65H23/18 , B65H23/24
CPC分类号： G11B5/865 , G11B15/00 , G11B15/43 , G11B15/607
摘要： A master tape movable in a closed loop including a pinch roller transfers a mirror image to a slave tape movable in a closed loop including a capstan. A thermomagnetic layer on the slave tape has a Curie temperature above which magnetic information is destroyed and below which magnetic information can be recorded on such layer. The thermomagnetic layer is heated above the Curie temperature, thereby becoming lengthened by thermal expansion just before the slave tape reaches the capstan. A downstream portion of a peripheral surface, preferably defining a cylindrical segment, on a first guide receives a pressurized fluid for sensing the tape tension in accordance with the tape width, distance from the cylinder axis and fluid pressure. An upstream portion of the guide peripheral surface receives a vacuum adjustable to regulate tape tension in response to variations in the pressurized fluid pressure. In regulating the tape tension, the spacing between the slave tape and the peripheral surface at the downstream portion is controlled. The master tape is lengthened by a second guide having the same construction as the first guide to compensate for the slave tape lengthening by the heater and the first guide, thereby producing a mirror image on the slave tape after the slave tape has cooled to the ambient temperature. Each of the master and slave tapes has a particular product of the Youngs modulus, tape width and tape thickness to provide a controlled strain on such tape when the tension on such tape is regulated.

2. 发明授权

US5479300A Tape duplicating system 失效
公开(公告)号：US5479300A
公开(公告)日：1995-12-26
申请号：US189175
申请日：1994-01-28
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/00 , G11B15/28 , G11B15/29
CPC分类号： G11B15/00 , G11B15/29 , G11B5/865
摘要： A master tape moves between first supply and take-up reels over a pinch roller. A slave tape moves between second supply and take-up reels over a capstan. First and second guides are respectively constructed and positioned to regulate the movement of the master and slave tapes to aligned positions on the pinch roller and the capstan. A heater between the pinch roller and the second guide heats essentially only a thermomagnetic layer on the slave tape to at least the Curie temperature. The heater is adjustably positioned to facilitate the movement of the slave tape to the aligned position on the capstan. Brake shoes respectively between the first guide and the first supply reel, and between the second guide and the second supply reel, control master and slave tape tensions and damp any variations in tensions. The pinch roller is movable to a first position, locked in position relative to the capstan, to abut the capstan and facilitate the transfer of magnetic information from the master tape to the slave tape. In this disposition, the pinch roller locks the heater in a fixed position relative to the capstan. The pinch roller and the associated guide are movable to a second position displaced from the capstan to facilitate the disposition of the master tape on the pinch roller. The heater is pivotable relative to the capstan to facilitate the disposition of the slave tape on the capstan. The rotational axis of the capstan, preferably of a unitary construction, is fixed.

3. 发明授权

US5526197A Tape drive system 失效
标题翻译：磁带机系统
公开(公告)号：US5526197A
公开(公告)日：1996-06-11
申请号：US210305
申请日：1994-03-17
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/00
CPC分类号： G11B15/00 , G11B5/86
摘要： A thermomagnetic layer on a slave tape has a Curie temperature above which it loses, and below which it stores, an image. Such layer is heated above the Curie temperature just before such layer records an image. To compensate for image stretching in such layer by the heat, the lines in a raster scan on the mirror-master tape are lengthened relative to such lines on a master tape during an image transfer between the tapes. To accomplish this, a rotary member holding the mirror-master tape has a larger diameter than, and rotates at the same angular speed as, a rotary member holding the master tape. To inhibit the slave tape separation from the heater by water vaporization in the thermomagnetic layer, (1) the heater heats such layer while the slave tape moves in a direction opposite to its movement during the image transfer or (2) a microwave oven heats such layer. The slave tape length may be determined from (1) the capstan revolutions for a reference tape of a given length and for the full length of the slave tape or (2) the angular revolutions of the slave tape supply and take-up reels at successive time instants, and the radius of the slave tape supply and take-up reels without tape on such reels. A sufficiently long slave tape may then be wound on the supply reel through an angular revolution of the particular reel dependent upon the image length on the master tape.
摘要翻译：从属磁带上的热磁性层的居里温度高于该温度，在其上存储图像。在这样的层记录图像之前，这种层被加热到居里温度以上。为了通过加热来补偿在这样的层中的图像伸展，在磁带之间的图像传输期间，镜像主磁带上的光栅扫描中的线相对于母带上的这些线被延长。为了实现这一点，保持镜面主带的旋转构件具有比保持母带的旋转构件更大的直径并且以相同的角速度旋转。为了通过在热磁性层中的水蒸发来抑制从属加热器的分离，（1）加热器加热这样的层，同时从动带在图像转印期间沿与其运动相反的方向移动，或者（2）微波炉加热层。从带宽度可以从（1）给定长度的参考带和从带的全长的绞盘转数来确定，或者（2）从带的供应和卷取卷轴的连续转角时间线，以及从动带供应和卷取卷轴的半径，无卷带。然后，根据母带上的图像长度，足够长的从带可以通过特定卷轴的旋转角度卷绕在供带盘上。

4. 发明授权

US5475538A Tape duplicating system 失效
标题翻译：磁带复制系统
公开(公告)号：US5475538A
公开(公告)日：1995-12-12
申请号：US188486
申请日：1994-01-28
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/00 , G11B15/28 , G11B15/29
CPC分类号： G11B15/00 , G11B15/29 , G11B5/865
摘要： A master tape moves between first supply and take-up reels over a pinch roller. A slave tape moves between second supply and take-up reels over a capstan. First and second guides are respectively constructed and positioned to regulate the movement of the master and slave tapes to aligned positions on the pinch roller and the capstan. A heater between the pinch roller and the second guide heats essentially only a thermomagnetic layer on the slave tape to at least the Curie temperature. The heater is adjustably positioned to facilitate the movement of the slave tape to the aligned position on the capstan. Brake shoes respectively between the first guide and the first supply reel, and between the second guide and the second supply reel, control master and slave tape tensions and damp any variations in tensions. The pinch roller is movable to a first position, locked in position relative to the capstan, to abut the capstan and facilitate the transfer of magnetic information from the master tape to the slave tape. In this disposition, the pinch roller locks the heater in a fixed position relative to the capstan. The pinch roller and the associated guide are movable to a second position displaced from the capstan to facilitate the disposition of the master tape on the pinch roller. The heater is pivotable relative to the capstan to facilitate the disposition of the slave tape on the capstan. The rotational axis of the capstan, preferably of a unitary construction, is fixed.
摘要翻译：母带通过夹送辊在第一供给卷轴和卷取卷轴之间移动。辅助磁带在第二个电源和卷取卷轴之间在一个绞盘上移动。分别构造和定位第一和第二导轨以调节主带和从带的移动到压紧辊和绞盘上的对准位置。压紧辊和第二引导件之间的加热器基本上仅将从属带上的热磁层加热到至少居里温度。加热器可调节地定位，以便于从带的运动到绞盘上的对准位置。分别在第一引导件和第一供给卷轴之间以及第二引导件和第二供给卷轴之间的制动靴，控制主和从属带的张力并且抑制张力的任何变化。夹送辊可移动到第一位置，相对于主导轴被锁定在适当位置，以抵靠绞盘并便于将磁信息从母带传送到从带。在这种布置中，夹送辊将加热器相对于绞盘锁定在固定位置。夹送辊和相关联的引导件可移动到从主导轴移位的第二位置，以便将母带置于夹送辊上。加热器相对于绞盘可枢转，以便于将从属带放置在绞盘上。绞盘的旋转轴线，优选地是整体结构，是固定的。

5. 发明授权

US5537267A Apparatus for, and methods of, processing a slave cassette to obtain a transfer of an image on a master tape to a slave tape in the slave cassette 失效
标题翻译：用于处理从属盒以获得在母带上的图像到从属盒中的从属带的传送的装置和方法
公开(公告)号：US5537267A
公开(公告)日：1996-07-16
申请号：US28240
申请日：1993-03-09
申请人： Alfred M. Nelson , Charles E. Redman , Alan N. Raffaelli
发明人： Alfred M. Nelson , Charles E. Redman , Alan N. Raffaelli
IPC分类号： G11B5/86 , G11B15/00 , G11B15/68
CPC分类号： G11B15/00 , G11B15/6885 , G11B5/865
摘要： Slave cassettes each including a slave tape and having a peripheral groove are stacked in a first station. Gripping fingers movable into the grooves in the forward cassette and the next cassette grip the forward cassette. During the pivoting of the cassette to a second station, a cover on the cassette is pivoted to expose the slave tape. At the second station, threading arms are moved from retracted to extended positions. The cassette and the threading arms are then moved to a third station planar with a pinch roller which is displaced from the capstan. The threading arms are then retracted to dispose the slave tape on the capstan. With a master tape on the pinch roller, the pinch roller is moved to a position abutting the capstan. The pinch roller and capstan are then rotated to transfer the image on the master tape to the slave tape such that the image beginning is at the slave tape beginning. The threading arms are extended; the pinch roller is moved to the displaced position; the cassette and the threading arms are moved to the second station; and the threading arms are retracted to decouple the slave tape from the capstan. The cassette is then moved to a position where belts are coupled to the cassette and the gripping fingers are thereafter released from the cassette. The belts then move the cassette to the mouth of a fourth station. Pins are rotated to move the cassette into the fourth station.
摘要翻译：每个包括从带并具有周边槽的从带盒堆叠在第一站中。夹持手指可移动到前盒中的凹槽中，而下一个盒带夹住前盒。在将盒式磁带枢转到第二站期间，盒上的盖枢转以露出从带。在第二站，穿线臂从缩回位置移动到延伸位置。然后将带盒和穿线臂用夹紧辊移动到第三工位平面，夹送辊从绞盘移位。然后将螺纹臂缩回以将从属带放置在绞盘上。使用压带辊上的母带，夹送辊移动到与绞盘相邻的位置。然后旋转压紧辊和主导轴将母带上的图像传送到从带，使得图像开始处于从带。螺纹手臂伸长; 夹送辊移动到位移位置; 盒和穿线臂移动到第二站; 并且螺纹臂被缩回以将从带与绞盘分离。然后将盒移动到带被耦合到盒的位置，然后夹紧指从盒中释放。皮带然后将盒子移动到第四站的口。旋转销来将磁带盒移动到第四个电台。

6. 发明授权

US5523897A Tape duplicating system 失效
标题翻译：磁带复制系统
公开(公告)号：US5523897A
公开(公告)日：1996-06-04
申请号：US26697
申请日：1993-03-05
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/43
CPC分类号： G11B15/43 , G11B5/86 , G11B5/865
摘要： Master and slave tapes respectively move on a pinch roller from a first supply reel to a first take-up reel in a first cassette and on a capstan from a second supply reel to a second take-up reel in a second cassette. The pinch roller locked in a first position abuts the capstan to transfer to the slave tape the image on the master tape. After such transfer, a signal sensing the slave tape end causes the pinch roller to be unlocked and to be moved to a second position displaced from the first position. In this position, the second cassette is replaceable by another cassette for an image transfer from the master tape. The rotations of the supply reel produce eccentricities which vary tape tension. These tension variations are compensated at positions before the pinch roller and the capstan by springs guiding the tapes and by damping members attached to the springs. The damping members are pre-stressed to provide damped compliances in accordance with the tension variations. Stiffeners are attached to the spring ends. The capstan may be hollow and non-magnetic to receive a magnetic head. A constant amplitude alternating signal applied to the head erases any image on the slave tape by providing a magnetic field greater than the the slave tape coercivity but less than the master tape coercivity. Thus, the image on the master tape is transferred to the slave tape by the abutting tape relationships.
摘要翻译：主从带分别在第一供带盘上的夹送辊上移动到第一盒中的第一卷取卷轴和从第二供带盘到第二盒中的第二卷取卷轴的绞盘上。锁定在第一位置的夹送辊与绞盘相接，以将从动带传送到母带上的图像。在这种传送之后，感测从属带端的信号导致夹送辊被解锁并移动到从第一位置移位的第二位置。在这个位置上，第二个盒可由另一个盒子更换，用于从母带传输图像。供应卷轴的旋转产生改变胶带张力的偏心率。这些张力变化在夹紧辊和绞盘之前的位置被补偿，弹簧通过弹簧引导带子和通过阻尼件连接到弹簧上。阻尼构件被预应力以根据张力变化提供阻尼一致性。加强件连接到弹簧端。绞盘可以是中空的并且是非磁性的以接收磁头。施加到头部的恒定幅度交替信号通过提供大于从带矫顽力但小于母带矫顽力的磁场来擦除从带上的任何图像。因此，母带上的图像通过邻接带的关系被传送到从带。

7. 发明授权

US5392976A Servo system 失效
标题翻译：伺服系统
公开(公告)号：US5392976A
公开(公告)日：1995-02-28
申请号：US886688
申请日：1992-05-19
申请人： Alfred M. Nelson , Robert P. Adams
发明人： Alfred M. Nelson , Robert P. Adams
IPC分类号： G11B5/86 , G11B15/00 , G11B15/43 , G11B15/60 , B65H20/00 , B65H23/18 , B65H23/24
CPC分类号： G11B5/865 , G11B15/00 , G11B15/43 , G11B15/607
摘要： A master tape movable in a closed loop including a pinch roller transfers a mirror image to a slave tape movable in a closed loop including a capstan. A thermomagnetic layer on the slave tape has a Curie temperature above which magnetic information is destroyed and below which magnetic information can be recorded on such layer. The thermomagnetic layer is heated above the Curie temperature, thereby becoming lengthened by thermal expansion just before the slave tape reaches the capstan. A downstream portion of a peripheral surface, preferably defining a cylindrical segment, on a first guide receives a pressurized fluid for sensing the tape tension in accordance with the tape width, distance from the cylinder axis and fluid pressure. An upstream portion of the guide peripheral surface receives a vacuum adjustable to regulate tape tension in response to variations in the pressurized fluid pressure. In regulating the tape tension, the spacing between the slave tape and the peripheral surface at the downstream portion is controlled. The master tape is lengthened by a second guide having the same construction as the first guide to compensate for the slave tape lengthening by the heater and the first guide, thereby producing a mirror image on the slave tape after the slave tape has cooled to the ambient temperature. Each of the master and slave tapes has a particular product of the Youngs modulus, tape width and tape thickness to provide a controlled strain on such tape when the tension on such tape is regulated.
摘要翻译：在包括夹送辊的闭环中可移动的主带将镜像传送到可在包括绞盘的闭合回路中移动的从属带。从带上的热磁层具有居里温度，高于该温度的磁信息被破坏，并且在该层上面可记录磁信息。热磁层被加热到高于居里温度，从而在从属带到达绞盘之前通过热膨胀而变长。圆周表面的优选地限定圆柱形段的下游部分在第一引导件上接收加压流体，用于根据带宽度，与气缸轴线的距离和流体压力来感测带张力。引导周边表面的上游部分接收可调节的真空，以响应加压流体压力的变化来调节带张力。在调节带张力时，控制从属带与下游部分周边表面之间的间隔。母带被具有与第一引导件相同结构的第二引导件延长，以补偿由加热器和第一引导件延长的从带，从而在从带已经冷却到环境之后在从带上产生镜像温度。每个主带和从带都具有杨氏模量，带宽和带厚度的特定产品，以便在这种带上的张力被调节时在这种带上提供受控的应变。

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