Method for simultaneous two-disk texturing
Various methods and apparatus for simultaneously texturing two single-sided hard memory disks is provided. The two disks are placed in a concentric contact merge orientation such that the outwardly facing surface of each disk may be simultaneously subjected to texturing by equipment designed to texture one double-sided disk.
1. A method of manufacturing hard disks for use in a disk drive, the method comprising:
a. placing a plurality of disks in a carrier;
b. removing a pair of disks from the carrier;
c. combining the pair of disks in a merge orientation prior to texturing;
d. simultaneously texturing one surface of each of said disks while in a merge orientation;
e. returning the pair of disks to the carrier.
2. The method of claim 1 , wherein the disks are in one of a gap merge orientation or spacer merge orientation during texturing.
3. The method of claim 2 , wherein the disks are in a gap merge orientation during texturing.
4. The method of claim 2 , wherein the disks are in a spacer merge orientation during texturing.
5. The method of claim 2 , wherein combining the disks in an abutting relationship comprises securing the pair of disks together.
6. The method of claim 1 , wherein the disks are in a contact merge orientation during texturing.
7. The method of claim 6 , further comprising forming a liquid layer between the pair of disks prior to combining the disks in a contact merge orientation.
8. The method of claim 6 , further comprising demerging the pair of disks prior to returning the pair of disks to the carrier.
9. The method of claim 8 , wherein the contact merge orientation defines an interface between the pair of disks and demerging comprises contacting the pair of disks at the interface.
10. The method of claim 9 , wherein contacting the disks at their interface comprises directing a wedge between the disks.
11. The method of claim 10 , further comprising directing multiple wedges between the disks.
12. The method of claim 6 , wherein the disks are in a concentric contact merge orientation during texturing.
13. The method of claim 1 , further comprising submerging the carrier in a liquid bath before removing a pair of disks from the carrier.
14. The method of claim 1 , wherein the plurality of disks are placed in the carrier in a gap merge orientation.
15. The method of claim 14 , wherein the gap between disks of a pair is approximately 0.035 inches or less.
16. The method of claim 14 , wherein the gap between disks of a pair is 0.025 inches or greater.
17. The method of claim 1 , wherein said texturing is data zone texturing.
18. The method of claim 17 , further comprising rotating the disks during texturing.
19. The method of claim 1 , wherein said texturing is laser zone texturing.
20. The method of claim 19 , further comprising rotating the disks during texturing.
21. The method of claim 1 , further comprising substantially maintaining the position of one disk relative to the other disk during texturing.
22. A method of manufacturing hard disks, comprising:
a. placing a plurality of disks in a carrier, with a space between adjacent disks;
b. forming a liquid layer between the disks;
c. removing a pair of adjacent disks from the carrier;
d. merging the removed pair of disks to remove the space between the disks such that one surface of each disk is in contact with one surface of the other disk, and the opposite surface of each disk faces outwardly;
e. texturing the outwardly facing surface of each disk in the pair simultaneously.
23. The method of claim 22 , further comprising separating the disks following texturing.
24. The method of claim 23 , wherein separating the disks comprises directing a wedge between the disks.
25. The method of claim 22 , wherein forming a liquid layer between the disks comprises submerging the disks in a liquid bath.
26. The method of claim 22 , wherein the step of placing a plurality of disks in a carrier further comprises arranging the disks in pairs, such that the spacing between disks of a pair is less than the spacing between adjacent pairs of disks.
27. The method of claim 26 , wherein the pairs of disks are in a gap merge orientation.
28. The method of claim 22 , wherein merging the disks to remove the space between the disks comprises placing the disks in a concentric contact merge orientation.
29. The method of claim 22 , wherein texturing the disks comprises data zone texturing.
30. The method of claim 22 , wherein the texturing comprises laser zone texturing.
31. The method of claim 22 , further comprising contacting the disks with a demerge tool following texturing.
32. A method of manufacturing disks used in hard disk drives, the method comprising:
a. placing a plurality of disks each having a central aperture in a carrier with a gap between adjacent disks;
b. removing a pair of disks from the carrier;
c. merging the pair of disks;
d. simultaneously texturing the outwardly facing surface of each disk;
e. demerging the pair of disks.
33. The method of claim 32 , further comprising returning the pair of demerged disks to the carrier.
34. The method of claim 32 , further comprising using a merging tool to merge the pair of disks.
35. The method of claim 32 , further comprising using a demerge tool to separate the pair of disks.
36. The method of claim 32 , wherein placing a plurality of disks in a carrier comprises positioning the disks in pairs, with each pair of disks in a gap merge orientation.
37. The method of claim 32 , further comprising positioning a spindle in the central aperture of the pair of disks prior to texturing.
38. The method of claim 37 , further comprising rotating the spindle and pair of disks during texturing.
39. The method of claim 37 , wherein the step of positioning a spindle in the center aperture of the pair of disks comprises expanding a portion of the spindle to engage the disks.
40. The method of claim 32 , wherein said texturing comprises data zone texturing.
41. The method of claim 32 , further comprising placing a liquid layer between the disks prior to texturing.
42. Then method of claim 41 , further comprising removing liquid from between the disks prior to texturing.
43. The method of claim 32 , wherein merging the disks comprises placing the pair of disks in a contact merge orientation.
44. The method of claim 43 , further comprising placing the pair of disks in a concentric contact merge orientation.
45. The method of claim 32 , wherein the step of texturing is laser zone texturing.
46. The method of claim 32 , wherein the step of merging the disks comprises using a plurality of rollers engaging the outside perimeter of the disks.
47. The method of claim 32 , wherein texturing the disks comprises contacting the disks with an abrasive.
48. A method of manufacturing hard disks for use in a disk drive, the disks being circular and having an opening in their center, the method comprising:
a. placing a plurality of disks in a carrier;
b. removing a pair of disks from the carrier;
c. combining the pair of disks in an abutting relationship;
d. securing the pair of disks at their center;
e. simultaneously texturizing one surface of each disk of the pair of disks; and
f. returning the pair of disks to a carrier.
49. The method of claim 48 , wherein placing a plurality of disks in a carrier comprises placing the plurality of disks in a first carrier, and returning the pair of disks to a carrier comprises returning the pair of disks to the first carrier.