公开(公告)号：JPH1027340A

公开(公告)日：1998-01-27

申请号：JP5461797

申请日：1997-03-10

Applicant: IBM

Inventor： BARENBOIM MICHAEL ,  BAUMGART PETER MICHAEL ,  CHRUSCH PETER PAUL ,  KARNI BENJAMIN ,  KERSTENS PIETER J M ,  THAO ANH NGUYEN ,  SEING HONG S ,  ANDREW CHING TAM

IPC: B65G49/07 ,  B23K26/067 ,  B23K26/08 ,  G11B5/60 ,  G11B5/82 ,  G11B5/84 ,  G11B23/00

Abstract: PROBLEM TO BE SOLVED: To provide a device for forming a disk having a surface roughened by pulse laser exposure. SOLUTION: The disk 49 in a cassette 48 is roughened through disk processing stations 38, 39. A lifter 59 lifts up each disk form the cassette, and transfers it to a pick-and-place mechanism 71 to be moved to a spindle 86. The spindle is rotated, and the disk is advanced side by side, and its both sides are exposed to beams led out from a pulse laser 108. Then, the pick-and-place mechanism returns the disk to the lifter, and lowers the disk to an original cassette pocket. While the pick-and-place mechanism of one side disk processing station moves the disk, the disk in the spindle of another disk processing station is exposed to the laser beam.

公开(公告)号：SG87048A1

公开(公告)日：2002-03-19

申请号：SG1999004432

申请日：1994-11-01

Applicant: IBM

Inventor： PETER MICHAEL BAUMGART ,  WING PUN LEUNG ,  HUNG VIET NGUYEN ,  THAO ANH NGUYEN ,  ANDREW CHING TAM ,  ANTHONY WU

IPC: B23K26/00 ,  C03C23/00 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  C03 ,  C04B41/00

Abstract: A process is disclosed for creating an array of bumps to texture a brittle surface, such as a glass substrate 12 for data recording disks. The texturing process uses a laser 10 to provide pulses of proper energy fluence to the brittle glass surface to produce a plurality of raised bumps in the surface. The bump creation is accomplished without unwanted micro-cracking or ejection of surface material by limiting the laser pulse fluence to a value in a narrow operating region discovered below the abrupt thermal shock fluence threshold for the brittle surface material. The process is also applicable to other brittle surface textures, such as those intended for use as "stamping surfaces" for the contact reproduction of the negative of a surface pattern, such as an optical disk.