摘要:
The present specification discloses an apparatus for reducing contamination at the head-disc interface. The preferred embodiment of the invention involves a data storage system for use in an environment where gaseous contaminants are present. The gaseous contaminants have a vapor pressure and a chemical composition. The data storage system has a housing. To attract gaseous contaminants present within the housing interior, a material is disposed within the housing interior. This material creates a competitive absorption or adsorption site for the gaseous contaminants.
摘要:
A method of forming a granular magnetic recording medium comprises etching a cap layer disposed on a granular magnetic recording layer. The etching process is carried out at a varying ion energy, including a first ion energy and a lower subsequent second energy. A device including the etched cap layer is also disclosed.
摘要:
The invention relates to a magnetic recording medium having a solid lubricant film layer which is deposited by plasma-enhanced chemical vapor deposition. The solid lubricant film comprises a perfluoropolyether, which is formed by the polymerization of a perfluorocycloalkane.
摘要:
Embodiments relate to lubricants disposed over magnetic storage media, such as rotatable thin film magnetic discs. One embodiment comprises a lubricant compound of a fluoropolyether chain having one or more carbonyl-imide pairs. For example, the carbonyl-imide pair may be located at one end, both ends, and/or in the middle of the fluoropolyether chain.
摘要:
A vapor source for depositing a thin film of polymeric lubricant on a magnetic or MO recording medium comprises an enclosure comprised of at least one thermally conductive material and including a back wall and a front wall spaced apart by at least one sidewall thereby defining a chamber with an interior space, the front wall comprising a plurality of openings forming a vapor diffusion plate with an array of vapor orifices; at least one liquid reservoir within the interior space for containing a vaporizable liquid material; a heater for heating the interior space and forming a vapor of the liquid material; and a shutter device for controlling flow of vapor through the orifices of the vapor diffusion plate, thereby reducing lubricant consumption.
摘要:
A method of simultaneously forming magnetic transition patterns in both side surfaces of a dual-sided magnetic or magneto-optical (MO) recording medium comprises steps of:(a) providing a dual-sided magnetic or MO recording medium having first and second opposing side surfaces;(b) providing a first magnetic stamper/imprinter having a first topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a first pattern corresponding to a first magnetic transition pattern to be formed in the first side surface;(c) providing a second magnetic stamper/imprinter having a second topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a second pattern corresponding to a second magnetic transition pattern to be formed in the second side surface, the second magnetic stamper/imprinter being formed from the first magnetic stamper/imprinter in a “mother”/“son” relationship;(d) contacting the first side surface with the first topographically patterned imprinting surface of the first magnetic stamper/imprinter;(e) contacting the second side surface with the second topographically patterned imprinting surface of the second magnetic stamper/imprinter; and(f) simultaneously forming magnetic transition patterns in both side surfaces of the medium by contact printing.
摘要:
A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.
摘要翻译:用于通过接触印刷图案化磁性和磁光(MO)记录介质的高场强对比磁压模/打印机包括:(a)具有高饱和磁化强度的磁性材料层, SUB >> =〜1.2,高磁导率μ> =〜5,包括第一,地形图形表面和与第一表面相对的第二表面,第一,地形图形表面包括图案化的多个间隔开的凹槽, 非凹陷区域,其形状图案对应于要在磁性或MO记录介质中形成的磁性图案; 和(b)第二表面上的Ni层。 耐腐蚀保护性外涂层可能存在于地形图形表面上。 还公开了一种用于制造压模/打印机的方法。
摘要:
A data/information storage and retrieval medium comprises: (a) a substrate having a layer stack thereon, the layer stack including an outer surface and comprising at least one magnetic or magneto-optical (“MO”) recording layer; and (b) a thin film or layer of a lubricant on the outer surface of the layer stack and comprised of a derivatized perfluoropolyether-based material including at least one generally linear perfluoropolyether chain and at least one phosphite antioxidant/stabilizer moiety attached to at least one end of at least one the chain.
摘要:
High areal recording density, magnetic hard disk recording media including CSS landing zones with laser-textured surfaces having shallow bump heights of from about 40 to about 80 Å, bump spacing in the circumferential and radial directions of from about 10 to about 30 μm, and bump diameter of from about 4 to about 8 μm, are provided for use in disk drive systems utilizing padded head sliders operating at very low head slider flying heights of about 0.7 μinch or below.
摘要:
A perfluoropolyether lubricant topcoat having at least one end-group having an epoxide ring is applied to a magnetic recording medium. Post-lubing treatment, such as ultraviolet (UV) light irradiation, of the perfluoropolyether lubricant topcoat initiates chemical bonding between the epoxide end-group and the medium surface. The lubricant of the present invention provides improved tribological performance over conventional lubricants.