Concentric Pregrooved Disk Fabricated by a Beam Scanning Method

Autor:	Nobuhiro Funakoshi, Akira Iwasawa, Masami Miyagi
Rok vydání:	1988
Předmět:	Fabrication Materials science business.industry Beam scanning General Engineering General Physics and Astronomy Concentric Tracking (particle physics) Optics Optical recording business Pitch tracking Optical disc Laser beams
Zdroj:	Japanese Journal of Applied Physics. 27:L107
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.27.l107
Popis:	A new method for fabricating a concentric pregrooved disk has been developed. In this method, a recording laser beam is scanned by a galvano mirror to trace a concentric circle while the disk moves continuously. Because a pregroove is recorded within two disk revolutions, the recording time is less than half that of the conventional concentric pregroove fabrication method. This method achieves a precise track pitch with less than 0.04 micron deviation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d65c07eba6564c40cdaf37701799060a https://doi.org/10.1143/jjap.27.l107 Zobrazit plný text záznamu