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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Yamanaka; Fusao
Address:
Kanagawa, JP
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
7245804 Laser device and exposure device using the same July 17, 2007
In a laser module, a laser beam which is emitted from a laser element is focused by a condensing optical system and caused to enter an incidence end of an optical fiber. A laser device is provided with a plurality of these laser modules. Emission end portions of the optical fibers are
7110425 Laser module and production process thereof September 19, 2006
In a disclosed laser module, a usage amount of organic adhesive is set to no more than 1.0 g/ml. Thus, an equilibrium density of outgas components from the adhesive after an air removal treatment is less than 1000 ppm. In another laser module, a heat sink at which a semiconductor laser
5061562 Method for preparing a magnetic recording medium and a magnetic disk using the same October 29, 1991
A method for preparing a magnetic recording medium which comprises the steps:(a) providing on a non-magnetic support, a thin magnetic metal film,(b) providing on the thin magnetic film, a protective layer comprised substantially of carbon,(c) washing the surface of the protective layer at le
5049448 Magnetic recording medium containing an ester lubricant branched from the number 2 carbon positi September 17, 1991
A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer, wherein at least one of ester compounds represented by formula (I) is present in or on the magnetic layer, ##STR1## wherein R.sub.1 represents a straight chain, saturated alkyl
4994321 Perpendicular magnetic recording medium and the method for preparing the same February 19, 1991
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the ma
4994305 Method for producing magnetic recording medium February 19, 1991
A method for producing a magnetic recording medium in which a flexible nonmagnetic support is moved continuously while being retained in contact with a plurality of spaced apart cylindrical cans to form thin films of metal on opposite sides of the support successively at portions where t
4869797 Method for preparing a magnetic recording medium September 26, 1989
A method of preparing a magnetic recording medium in which a magnetic layer is deposited on a non-magnetic support and then a carbon protective layer is sputtered onto the magnetic layer. The sputtering is performed with a bias voltage of -10V to -100V being applied in the vicinity of th
4868070 Vertical magnetization type recording medium and manufacturing method therefor September 19, 1989
In a method of manufacturing a vertical magnetization type recording medium, a soft magnetic film layer is formed on each of the two sides of a non-magnetic support, and then a vertical magnetization film layer is formed on each soft magnetic film layer thus formed, thereby to provide a
4867101 Apparatus for producing magnetic recording medium September 19, 1989
Contaminant magnetic dust particles and flakes generated during the thin film coating of a substrate 9 in a vacuum chamber 1 are gravitationally collected in catch pans or troughs 8 disposed below the deposition zones. Magnets 10 are provided under the bottoms of the pans to enhance the
4865878 Method of manufacturing vertical magnetization type recording medium September 12, 1989
In a method of manufacturing a vertical magnetization type recording medium, a soft magnetic film layer is formed on each of the two sides of a non-magnetic support, and then a vertical magnetization film layer is formed on each soft magnetic film layer thus formed, thereby to provide a
4717592 Vertical magnetization type recording medium and manufacturing method therefor January 5, 1988
In forming a vertical magnetization type recording medium, a first soft magnetic film layer is formed on each side of a film-shaped support by vacuum deposition or sputtering at a temperature of 30.degree. C. or lower, a second soft magnetic film layer is formed on each of the first










 
 
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