公开(公告)号：US6037565A

公开(公告)日：2000-03-14

申请号：US665275

申请日：1996-06-17

申请人： Lloyd A. Hackel ,  C. Brent Dane ,  Shamasundar N. Dixit ,  Mathew Everett ,  John Honig

发明人： Lloyd A. Hackel ,  C. Brent Dane ,  Shamasundar N. Dixit ,  Mathew Everett ,  John Honig

IPC分类号： B23K26/06 ,  B23K26/067 ,  G11B5/84 ,  B23K26/00

CPC分类号： G11B5/8404 ,  B23K26/0622 ,  B23K26/066 ,  B23K26/0676 ,  G11B5/84

摘要： Magnetic recording media are textured over areas designated for contact in order to minimize friction with data transducing heads. In fabricating a hard disk, an aluminum nickel-phosphorous substrate is polished to a specular finish. A mechanical means is then used to roughen an annular area intended to be the head contact band. An optical and mechanical system allows thousands of spots to be generated with each laser pulse, allowing the textured pattern to be rapidly generated with a low repetition rate laser and an uncomplicated mechanical system. The system uses a low power laser, a beam expander, a specially designed phase plate, a prism to deflect the beam, a lens to transmit the diffraction pattern to the far field, a mechanical means to rotate the pattern and a trigger system to fire the laser when sections of the pattern are precisely aligned. The system generates an annular segment of the desired pattern with which the total pattern is generated by rotating the optical system about its optic axis, sensing the rotational position and firing the laser as the annular segment rotates into the next appropriate position. This marking system can be integrated into a disk sputtering system for manufacturing magnetic disks, allowing for a very streamlined manufacturing process.

摘要翻译： 磁记录介质在指定接触的区域上纹理化，以便最小化与数据传感头的摩擦。 在制造硬盘时，将铝镍磷基底抛光成镜面光洁度。 然后使用机械装置来粗糙化作为头部接触带的环形区域。 光学和机械系统允许每个激光脉冲产生数千个点，允许纹理图案以低重复率激光和不复杂的机械系统快速产生。 该系统使用低功率激光器，光束扩展器，专门设计的相位板，棱镜来偏转光束，透镜将衍射图案传输到远场，机械手段使旋转图案和触发系统触发 当图案的部分精确对准时的激光。 系统产生期望图案的环形段，通过围绕其光轴旋转光学系统来产生总图案，感测旋转位置并且当环形区段旋转到下一适当位置时点燃激光。 该标记系统可以集成到用于制造磁盘的磁盘溅射系统中，允许非常流线型的制造过程。