Head cleaning by loading heads at low speed

Details Head cleaning by loading heads at low speed Head cleaning by loading heads at low speed

G - Physics

11

B

G11B 21/02 (2006.01) G11B 5/41 (2006.01)

Patent

CA 2238031

In a hard disk drive (20), heads (36) are cleaned by loading them onto a storage disk (10) and rotating the disk at a low speed which produces a high force of contact between the head and the disk to clean the head. Periodically, a more thorough cleaning cycle is manually initiated. The heads are loaded onto a cleaning cartridge which has a disk surface which is mildly abrasive to the head. A low frequency is applied to the actuator arm (32) to vibrate the heads radially on the medium which is rotating at low speed. Thereafter, the speed of the spindle (29) is increased up to the operating speed at which the heads are in pseudo contact with the disk surface. This cleaning cycle is repeated five times to clean the heads. The cleaning cycle is initiated by depressing the eject button (26) for longer than five seconds and placing the cleaning cartridge in the drive in response to a flashing LED (27).

Dans une unité de disque dur (20), on nettoie les têtes (36) en les chargeant sur un disque de stockage (10) et en faisant tourner celui-ci à une vitesse faible qui produit une grande force de contact entre la tête et le disque, de façon à nettoyer la tête. Périodiquement, on lance manuellement un cycle de nettoyage plus complet. On charge les têtes sur une cartouche de nettoyage dont la surface de disque est légèrement abrasive pour la tête. On applique une basse fréquence au bras d'actionnement (32) de façon à faire vibrer les têtes radialement sur le support tournant à faible vitesse. Ensuite, on augmente la vitesse du plateau (29) jusqu'à la vitesse de fonctionnement à laquelle les têtes sont en pseudo-contact avec la surface du disque. On répète ce cycle de nettoyage cinq fois pour nettoyer les têtes. On le lance en appuyant sur le bouton d'éjection (26) pendant une durée supérieure à cinq secondes et en introduisant la cartouche nettoyante dans l'unité de disque en réponse à un clignotement de l'affichage à diode luminescente (27).

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