Method for HDD disk defect source detection

摘要

Systems and methods for defect source detection in HDD are provided. The system may include one or more disk processing stations, a disk, a disk defector detector, and a disk defect source detector. This system may be provided in a disk manufacturing environment. The disk defect source detector may be configured to identify a processing station as a source of disk defects by overlaying a disk defect image with a station defect pattern image.

主权项

1. A method for determining defect causation on a magnetic disk, comprising:
creating a first station defect pattern image for a first disk processing station by mapping disk surface areas contacted by the first disk processing station; creating a second station defect pattern image for a second disk processing station by mapping disk surface areas contacted by the second disk processing station; after creating the first and second station defect pattern images, mapping defects detected on a processed disk on a disk defect image; overlaying the first station defect pattern image with the disk defect image; determining if the first station defect pattern image corresponds to the disk defect image; overlaying the second station defect pattern image with the disk defect image; and determining if the second station defect pattern image corresponds to the disk defect image.