Title :
Development of the pushpin free STW
Author :
Uematsu, Y. ; Fukushi, M. ; Taniguchi, K.
Author_Institution :
HDD Div., Fujitsu Labs. Ltd., Kawasaki, Japan
Abstract :
In order to realize super-high density TPI, it is necessary to greatly reduce track misregistration. For this purpose, it is necessary to reduce the amount of repeatable position errors (RPE) and improve the writing accuracy of position error signals (PES) of servo track writers (STW), in parallel with reducing non-repeatable position errors (NRPE) with fluid dynamic bearings or piggyback actuators employed. This paper introduces a new, low-priced STW system of high efficiency, with a high precision writing performance.
Keywords :
disc drives; servomechanisms; TPI; fluid dynamic bearing; magnetic disk drive; nonrepeatable position error; piggyback actuator; position error signal; pushpin-free STW; repeatable position error; servo track writer; track misregistration; Actuators; Costs; Detectors; Drives; Fluid dynamics; Gratings; Optical interferometry; Optical sensors; Servomechanisms; Writing;
Conference_Titel :
Asia-Pacific Magnetic Recording Conference, 2000. APMRC 2000
Conference_Location :
Tokyo, Japan
Print_ISBN :
0-7803-6254-3
DOI :
10.1109/APMRC.2000.898937
