-
公开(公告)号：US3824128A
公开(公告)日：1974-07-16
申请号：US25624572
申请日：1972-05-24
发明人： AKASHI G , KITAMOTO T , FUJIYAMA M
CPC分类号： G11B5/70626 , G11B5/706 , G11B5/70636 , Y10S428/90 , Y10T428/257 , Y10T428/31786 , Y10T428/31971
摘要： A MAGNETIC RECORDING MEDIUM HAVING A MAGNETIC RECORDING LAYER IN WHICH IS DISPERSED IN A BINDER A FERROMAGNETIC POWDER COMPRISING A MIXTURE OF AN IRON OXIDE POWDER AND A CHROMIUM DIOXIDE POWDER IN A WEIGHT RATIO OF 1:4 TO 4:1 RESPECTIVELY, AND POSSESSING IMPROVED SENSITIVITY TO SHORT WAVE-LENGHT SIGNALS, PARTICULARLY EVEN AFTER BEING SUBJECT TO HEAT.
-
公开(公告)号：US3814672A
公开(公告)日：1974-06-04
申请号：US18725171
申请日：1971-10-07
发明人： KITAMOTO T , AONUMA M , KAWAZIRI K
IPC分类号： G03G19/00 , G03G5/16 , G11B5/02 , G11B5/62 , G11B5/86 , H01F41/24 , C23B5/50 , C23B5/54 , C23C3/02
CPC分类号： H01F41/24 , G11B5/62 , G11B5/865 , Y10T428/265 , Y10T428/31692
摘要： A MANETIZATION PATTERN ON A MAGNETIC RECORDING MEDIUM IS REPRODUCED BY PLATING A FEERROMAGNETIC METAL OR ALLOY ON A TIN LAYERED SPPORT SUCH AS POLYETHYLENE TEREPHTHALATE FILM WHILE BRNING THE SUPPORT INTO INTIMATE CONTACT WITH THE MAGNETIC RECORDING SURFACE UNTIL THE AVERAGE THICKNESS OF THE RESULTING PLATED LAYER REACHES AT LEAST 50 A., SEPARATING THE MAGNETIC REORDING SURFACE, AND CONTINUOUSLY PLATING THE SPPORT IN THE SUBSTANTIAL ABSENCE OF AN EXTERIOR MAAGNETIC FIELD WHEREBY THE CORRESPONDING MAGNETIZATION PATTERN IS REPRODUCED ON THE THIN SUPPORT.
-
公开(公告)号：US3767580A
公开(公告)日：1973-10-23
申请号：US3767580D
申请日：1971-10-20
发明人： KITAMOTO T , AKASHI G
IPC分类号： C01G37/027 , C01G37/02 , G11B5/706 , H01F1/11
CPC分类号： G11B5/70636 , C01G37/02 , C01P2006/42 , C01P2006/80
摘要： In the production of ferromagnetic chromium dioxide or modified chromium dioxide containing guest-components, such as Te or Sb, chromium ions from water-soluble chromium compounds remaining in the final product cause various disadvantages. These disadvantages have now been overcome by treating the final product consisting mainly of ferromagnetic chromium dioxide or modified chromium dioxide with a compound, such as barium chloride or sodium hydroxide, which reacts with the chromium ions to form water-insoluble chromium compounds.
摘要翻译： 在生产铁磁性二氧化铬或含有客体成分的改性二氧化铬（如Te或Sb）时，残存在最终产品中的水溶性铬化合物的铬离子会引起各种缺点。 这些缺点现在已经通过用与铬离子反应形成水不溶性铬化合物的化合物如氯化钡或氢氧化钠处理主要由铁磁性二氧化铬或改性二氧化铬组成的最终产物来克服。
-
公开(公告)号：US3759796A
公开(公告)日：1973-09-18
申请号：US3759796D
申请日：1971-03-29
发明人： KITAMOTO T , AONUMA M , KAWAZIRI K
摘要： REPRODUCTION OF AN ORIGINAL MAGNETIZATION PATTERN BY FORMING A MAGNETIC FILM HAVING A HIGH MAGNETIZATION RESISTANCE ON A SUBSTRATE TAPE HAVING MAGNETIZATION PATTERN THEREBY TO MAGNETIZE SAID FILM IN THE SAME PATTERN AS THAT OF THE SUBSTRATE, AND STRIPPING OFF SAID MAGNETIC FILM FROM THE SUBSTRATE. THE MAGNETIC FILM IS FORMED BY PLATING OR VAPOR DEPOSITION AND CAN BE USED REPEATEDLY AS A MASTER TAPE TO REPRODUCE LARGE QUANTITIES OF THE MAGNETIZATION PATTERN BY SUCH MEANS AS MAGNETIC TRANSFER.
-
公开(公告)号：US3787564A
公开(公告)日：1974-01-22
申请号：US3787564D
申请日：1971-12-14
发明人： AKASHI G , KITAMOTO T , SHIMIZU M
IPC分类号： C01G37/027 , C01G37/02 , G11B5/706 , H01F1/11 , B01J1/00
CPC分类号： G11B5/70636 , C01G37/02 , C01P2006/32 , C01P2006/42
摘要： FERROMAGNETIC CHROMIUM DIOXIDE IS PRODUCED WITHOUT ADVERSE AFFECTS ON ITS CHARACTERISTICS BY USING A REACTION VESSEL AT LEAST THE INNER WALL OF WHICH IS CHROMIUM.
-
公开(公告)号：US3767464A
公开(公告)日：1973-10-23
申请号：US3767464D
申请日：1972-02-17
发明人： AKASHI G , KITAMOTO T , KATADA T , YAMADA Y , KAZUHIKO M
CPC分类号： G11B5/845 , Y10T428/24413 , Y10T428/257 , Y10T428/31786 , Y10T428/31993
摘要： Magnetic recording member having a high Br/Bm ratio, an excellent squareness ratio of the magnetization curve, low noise level and excellent surface smoothness, especially suitable for high density recording, produced by pressing a magnetic recording member having a magnetic recording layer which is composed of an acicular ferromagnetic alloy powder having an average length of larger than 1 micron, dispersed in a binder and being magnetically orientated in order to crush the powder having a larger particle size.
摘要翻译： 具有高Br / Bm比的磁记录元件，磁化曲线的优良矩形比，低噪声水平和优异的表面平滑度，特别适用于通过压制具有磁记录层的磁记录元件产生的高密度记录 的平均长度大于1微米的针状铁磁性合金粉末，分散在粘合剂中并进行磁取向以粉碎具有较大粒径的粉末。
-
公开(公告)号：US3844907A
公开(公告)日：1974-10-29
申请号：US38908573
申请日：1973-08-17
发明人： KAWAZIRI K , KITAMOTO T , AONUMA M
CPC分类号： G11B5/865 , G11B5/852 , Y10T428/31786
摘要： Reproduction of an original magnetization pattern by forming a magnetic film having a high magnetization resistance on a substrate tape having a magnetization pattern thereby to magnetize said film in the same pattern as that of the substrate, and stripping off said magnetic film from the substrate. The magnetic film is formed by plating or vapor deposition and can be used repeatedly as a master tape to reproduce large quantities of the magnetization pattern by such means as magnetic transfer.
摘要翻译： 通过在具有磁化图案的基板带上形成具有高磁化强度的磁性膜从而以与基板相同的图案磁化所述膜，并从基板剥离所述磁性膜，来再现原始磁化模式。 磁膜通过电镀或蒸镀形成，可以重复使用作为母带，通过磁转移等方式再生大量的磁化模式。
-
8.发明授权
公开(公告)号：US3819411A
公开(公告)日：1974-06-25
申请号：US20843371
申请日：1971-12-15
发明人： KITAMOTO T , YAMADA Y
IPC分类号： C01G37/027 , C01G37/14 , G11B5/706 , H01F1/11 , C01G37/02
CPC分类号： C01G37/14 , G11B5/70636 , Y10T428/31786
摘要： A ferromagnetic chromium dioxide composition for use as a magnetic material of a magnetic recording medium is produced from a mixture of the powders of ferromagnetic chromium dioxide or its derivative with a compound of an ion capable of forming a waterinsoluble compound upon reaction with a hexavalent chromium ion, such as barium stearate or zinc oxide.
摘要翻译： 用作磁记录介质的磁性材料的铁磁性二氧化铬组合物由铁磁性二氧化铬或其衍生物的粉末与能够形成水不溶性化合物的离子的化合物的混合物制成，与六价铬 铬离子，如硬脂酸钡或氧化锌。
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.013 秒)
