摘要:
A magnetic recording medium is described, which comprises a support having thereon a magnetic layer comprising a ferromagnetic metal powder dispersed in a binder, which is a magnetic recording medium for recording signals of from 0.17 to 2 G bit/inch2 of areal recording density, wherein the coercive force of said magnetic layer is 1,800 Oe or more, said ferromagnetic metal powder comprises Fe and Co, and the atomic ratio of Al/(FenullCo) is from 3.0 to 15.4%.
摘要:
A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer contains at least one of .alpha.-Al.sub.2 O.sub.3 and Cr.sub.2 O.sub.3 in an amount of 5 to 15% by weight based on the weight of the ferromagnetic powder, the density of at least one of .alpha.-Al.sub.2 O.sub.3 and Cr.sub.2 O.sub.3 in the surface of the magnetic layer is less than 0.25/.mu.m.sup.2, the intensity ratio of Al spectrum to Fe spectrum as determined by ESCA is in the range of 0.05 to 0.20, or the intensity ratio of Cr spectrum to Fe spectrum as determined by ESCA is in the range of 0.02 to 0.08, and the magnetic layer contains a fatty acid or a fatty acid ester, and the fatty acid or fatty acid ester is orientated in the surface of the magnetic layer. And further a process for producing the above magnetic recording medium is disclosed.
摘要翻译:公开了一种磁记录介质,其包括其上具有含有铁磁性粉末和粘合剂的磁性层的非磁性载体,其中所述磁性层含有以重量计5至15%的量的α-Al 2 O 3和Cr 2 O 3中的至少一种 铁磁粉末的重量,磁性层表面中的α-Al2O3和Cr2O3中的至少一种的密度小于0.25 /μm2,通过ESCA测定的Al光谱与Fe光谱的强度比在 或者通过ESCA测定的Cr光谱与Fe光谱的强度比在0.02〜0.08的范围内,磁性层含有脂肪酸或脂肪酸酯,脂肪酸或脂肪酸 酯定向在磁性层的表面。 并且还公开了制造上述磁记录介质的方法。
摘要:
A magnetic recording medium is described, comprising a non-magnetic support and a magnetic layer, said magnetic layer containing as a binder at least one compound selected from each of compound groups (A) and (B) that has been exposed to radiation, wherein(A) is polyvinyl chloride type compounds containing at least one polar group and at least one carbon-carbon unsaturated bond per molecule; and(B) is polyurethane type compounds containing at least one --CO.sub.2 H group and at lease one carbon-carbon unsaturated bond per molecule.
摘要:
Corrosion resistant ferromagnetic metal powders in which a volatile corrosion inhibitor is adsorbed on at least a part of the surface of ferromagnetic metal powders having an average particle size of 1000 A or less are disclosed. A method of preparing the corrosion resistant ferromagnetic metal powders is also disclosed.
摘要:
This invention relates to a magnetic recording medium comprising a non-magnetic support and magnetic layer provided thereon containing a ferromagnetic metal powder, the magnetic layer having a multilyaer structure consisting of a lower layer containing acicular grains obtained by dry process reduction and an upper layer containing chain-like grains obtained by wet process reduction, the upper layer being provided on the lower layer. This magnetic recording medium is particularly suitable for high density recording.
摘要:
A process for producing a ferromagnetic powder comprising effecting the oxidation-reduction reaction in an aqueous solution of a metal salt containing at least Fe and capable of forming a ferromagnetic substance, by the use of at least one member selected from the group consisting of boron hydride compound and a derivative thereof, and in the presence of a Ti compound.
摘要:
A magnetic recording medium for high density recording comprising a support having thereon a magnetic recording layer comprising a ferromagnetic metal powder of the Fe-Co-Cr-B system and having a coercive force of about 700 to 1500 orsteds in the oriented direction of the magnetic substance and a residual magnetic flux density of about 1500 gauses or more, the residual magnetic flux density of which after storage for 160 hours under the conditions of a temperature of 60.degree. C and 90%RH is 85% or more of the initial value thereof before storage under these conditions in a binder. The magnetic recording medium is especially suitable for high density recording, having sufficient sensitivity and excellent resistance.
摘要:
A powdery ferromagnetic metal material for a magnetic recording medium containing at least Fe, B and Pb as the main component and a process for producing a powdery ferromagnetic metal material comprising reducing a metal salt capable of forming a ferromagnetic substance and containing at least Fe in an aqueous solution thereof using a borohydride compound and/or derivative thereof in the presence of a Pb compound.
摘要:
The image and information processor includes an image information processing unit having a function for inputting patient information and radiation image capture information related to the patient information, a function for receiving a first radiation image having been read by a radiation image reading device and a function for performing image processing on the first radiation image, an image display device for the displaying at least one of the first radiation image and second radiation image having been subjected to the image processing and an external storage device for temporarily storing at least one of the first radiation image and the second radiation image in relation to the patient information; wherein the image information processing unit is constructed such that a serial radiography based on a plurality of radiographic conditions of the image capture information relating to one patient inputted by the input function can be reserved as a single inspection. The image information processing unit may be connected via a network to one or more radiation image reading devices and one or more image output devices for outputting the second radiation images.
摘要:
There is provided compounds that inhibit interaction between murine double minute 2 (Mdm2) protein and p53 protein and exhibits anti-tumor activity. Compounds include imidazothiazole derivatives that can inhibit interaction between Mdm2 protein and p53 protein and exhibits anti-tumor activity.