International Business Machines Corporation

Peter B Chrusch

Andrew Ching Tam

Peter Michael Baumgart

Pieter J Kerstens

Hong S Seing

Michael Barenboim

Benjamin Karni

Benny Michael Harper

Iraj Kahkesh Pour

Doug John Krajnovich

A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a hardfile disk. Disks are moved into and out of the texturing process in cassettes, through two disk-handling stations. An optical system includes a laser directed at a beamsplitter to split the laser beam into two beams having approximately equal power, which are directed along parallel paths through a power control optics block to expose simultaneously opposite sides of a disk to be textured. The power control optics block includes means for attenuating and measuring each of the two beams. A shuttling mirror directs these two beams alternately at a disk within each of the two disk handling stations.

Optical apparatus for dual-beam laser texturing

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Boynton Beach, FL, United States of America

Peter B Chrusch