Cleaner unit for information disks

G - Physics – 11 – B

Patent

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Details

G11B 3/58 (2006.01) G11B 23/50 (2006.01)

Patent

CA 2104597

A cleaner unit is provided for applying a liquid cleaning solution onto the surface of an information disk, such as a so-called compact laser disk or the like. The cleaner unit comprises a housing with a rotatable spindle adapted to support the information disk in a generally horizontal orientation, in combination with a circulation system having a rotatable pump impeller for spraying a jet of a cleaning solution onto the underside of the disk near the spindle. A drive motor is operated by a control circuit for initially rotating the spindle and impeller in a first direction for spraying the cleaning solution against the spinning disk, with the rotational disk movement causing the cleaning solution to spread radially outwardly as a film over the underside disk surface. The cleaning solution is thrown from the disk periphery and is captured by an outer contoured deflector shroud for recirculation to the pump impeller. At the conclusion of a short cleaning cycle, the control circuit reverses the direction of spindle and impeller rotation to spin the disk in an opposite or second direction for the duration of a short dry cycle, without applying cleaning solution to the disk.

L'invention décrit un dispositif de nettoyage servant à appliquer une solution de nettoyage liquide sur la surface d'un disque support d'information tel qu'un disque laser ou compact ou similaire. Le dispositif de nettoyage comprend un boîtier pourvu d'un axe rotatif conçu pour supporter le disque dans un sens généralement horizontal et combiné à un système de circulation pourvu d'un rotor de pompe rotative servant à pulvériser un jet de solution de nettoyage sur la face inférieure du disque à proximité de l'axe. Un moteur de transmission fonctionne par l'intermédiaire d'un circuit de commande, afin d'imprimer une rotation initiale à l'axe et au rotor dans un premier sens, de manière à pulvériser la solution de nettoyage contre le disque en rotation, ladite rotation provoquant l'étalement de ladite solution vers l'extérieur dans un sens radial, ce qui forme une pellicule sur la face inférieure du disque. La solution de nettoyage est rejetée de la circonférence du disque et est récupérée par un déflecteur extérieur profilé qui la renvoit vers le rotor de la pompe. A la fin d'un cycle de nettoyage court, le circuit de commande inverse le sens de rotation de l'axe et du rotor, afin de faire tourner le disque dans un deuxième sens, ou sens opposé, pendant la durée d'un cycle de séchage court, sans lui appliquer de solution de nettoyage.

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