Asahi Glass Company, Limited

Komag Corporation

Toru Iseda

Koichi Suzuki

Akira Mitsui

Kiyoshi Matsumoto

Eiichi Ando

Junichi Ebisawa

Susumu Suzuki

Mikio Takehara

Ichiro Makino

Tu Chen

Kentaro Nagano

Kazuo Mannami

Kazuyuki Komagata

For breaking and cutting a glass to obtain a glass plate having a rectangular shape, a first preliminary break is formed in a portion of a glass ribbon near a side edge of the glass ribbon along a first planned breaking and cutting line perpendicular to a transferring direction of the glass ribbon. Local heating is movably applied to a portion of the first preliminary break near an end of the first preliminary break to progress a first actual breaking and cutting line therefrom. A first bending moment is applied along the first planned breaking and cutting line to break and cut the glass ribbon in a direction substantially perpendicular to the transferring direction so as to obtain a glass plate. Second preliminary breaks are formed in an end of the glass plate along second planned breaking and cutting lines substantially parallel with the transferring direction. Local heating is movably applied to portions of the second preliminary breaks near each end thereof to progress second actual breaking and cutting lines, using as starting points the ends of the second preliminary breaks. Second bending moments are applied along the second planned breaking and cutting lines to break and cut the glass plate in a direction substantially parallel with the transferring direction.

Method and apparatus for breaking and cutting a glass ribbon

A magnetic recording medium comprising a magnetic recording layer and at least one protective layer formed on the recording layer, wherein the outermost protective layer on the side exposed to air is made of an oxide film.

Magnetic recording medium and method for its production

Method for producing a specified zirconium-silicon amorphous oxide film

A glass disk is subjected to a chemical or gentle mechanical polishing step to remove microcracks or scratches in the disk surface prior to chemically texturing the disk. Thereafter, magnetic media is deposited onto the glass disk. We have discovered that by performing this pre-texturing polishing step, we can avoid the phenomenon of 'linkage bumps,' which could otherwise cause the resulting magnetic disk to fail a glide-type test or to cause a read/write head crash.

Method for texturing a magnetic disk silicate glass substrate

A metallic coating method is carried out by contacting a surface of a substrate with a molten metal which is locally raised under ultrasonic vibration. A metallic coating can be continuously attained on one side only of ribbon type substrate in a form of plate, sheet or strip or only the outer surface of a pipe.

Metallic coating method using ultrasonic vibration

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Yokohama, Japan

Toru Iseda