PRODUCTION OF MAGNETIC DISK

PURPOSE:To drastically lower the probability of generation of a clash and to improve the reliability of a device by including a processing stage by a laser beam in texturing to roughen a disk surface by using abrasive grains. CONSTITUTION:The laser beam emitted from a laser beam source 21 is reflect...

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Bibliographic Details
Main Authors MIYAI TAKESHI, TANAKA MORIMICHI, SATO MASAZUMI
Format Patent
LanguageEnglish
Published 10.03.1995
Edition6
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE:To drastically lower the probability of generation of a clash and to improve the reliability of a device by including a processing stage by a laser beam in texturing to roughen a disk surface by using abrasive grains. CONSTITUTION:The laser beam emitted from a laser beam source 21 is reflected by a beam splitter 22 and is made incident perpendicularly on the disk from above a disk processing surface 11. The laser beam is condensed by a condenser lens 23 on route and is so condensed as to focus at the disk processing surface. An auto focus mechanism 25 by which a lens is so vertically mechanically controlled as to maximize the light quantity of a detector is installed and the focus is so controlled as to exist on the disk at all times. The texturing with the smaller variations is realized by desired processing specifications in such a case.
Bibliography:Application Number: JP19930209100