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Technology Stocks : Disk Drive Sector Discussion Forum -- Ignore unavailable to you. Want to Upgrade?


To: Mark Adams who wrote (1576)11/16/1997 5:17:00 PM
From: Mark Oliver  Read Replies (1) | Respond to of 9256
 
An interesting table was provided to attendees of AEA attendees by
Ultratech. Doesn't imply the growth of head demand that I would have expected. Any thoughts?

Merchant/Captive (Units 100)

Head Type.....1995.....1996.....1997......1998.....1999
----------------------------------------------------------------------
Thin Film Inductive

Merchant.....141,903.8......212,048.0......216,524.0......238,619.0......112,127.2
Captive.....142,898.1.....190,437.2.....145,721.0.....126.216.0.....115,530.0
Total........248,801.9.....402,485.2.....357,245.0.....264,835.0.....227,657.2
-----------------------------------------------------------------------
Thin Film (MR)

Merchant...... 8,255.0..... 60,036.0......131,058.0...... 307,577.2...... 365,292.0
Captive .......48,645.0..... 110,000.0..... 333,432.0..... 473,687.8..... 472,300.0
Total.......... 56,900.0....... 170,036.0....... 464,490.0.......781,265.0..... 837,592.0
-----------------------------------------------------------------------
Thin Film (Giant MR)

Merchant -- -- -- -- --
Captive .... -- ....... --...... 10.0 ....... 125.0 ....... 10,200.0

Total ........ -- ........ -- ......... 10.0 ....... 125.0 ....... 10,200.0

-----------------------------------------------------------------------
Total Head Demand
........ 341,701.9........ 572,521.2 ....... 821,745.0....... 1,046,225.0....... 1,075,449.2
------------------------------------------------------------------------
Source: Ultratech and Peripheral Research Corporation 4/97

1997 Thin Film Production Schedule
Units in Millions

Manufacturer...... Merchant......Captive ......Totals...... MR Estimate
----------------------------------------------------------------
Applied Magnetics ...... 44.2 ...... 0 ..... 44.2 ...... 17.6
ALPS .............. 8.7 ....... 0 .......... 8.7......... 8.7
Digital Quantum ..... 0.9 ...... 48.2 ..... 49.1 ...... 37.8
FDK Fujitsu ....... 4.7...... 2.8...... 7.5 ....... 7.5
IBM ............... 4.7....... 109.7 ...... 114.4 ...... 114.4
Headway ............. 5.4........ 0 ........ 5.4 ...... 5.4
Read-Rite Corp. ...... 134.5....... 0 ..... 134.5 ...... 37.0
Read-Rite/SMI ........ 42.0 ..... 0 ....... 42.0 ......25.0
Seagate Tech/Head....... 18.4...... 327.5 ..... 345.9...... 194.0
TDK/SAE ...... 105.0 ...... 0 ...... 105.0 ...... 39.0
Yamaha Co. Ltd. ...... 96.0 ...... 0 ...... 96.0 ...... 37.0
Others (Hitachi/NEC) ...... 4.6 ...... 0 ...... 4.6 ...... 1.2
------------------------------------------------------------------
Totals ...... 469.1 ...... 488.2 ...... 957.3 ...... 515.9
------------------------------------------------------------------
Source: Ultratech and Peripheral Research Corporation 4/97



To: Mark Adams who wrote (1576)11/17/1997 2:32:00 AM
From: Gottfried  Respond to of 9256
 
Mark, thank you for the link to the "no-ID" article. It was new
to me. I was wrong when I said it [no-ID] would not per se
enable an increase in TPI.

By removing the ID field from the track, error rate criteria can
be relaxed. So track density can be increased.
Figure 5. in the article leaves me with questions, and I sent
e-mail to someone at IBM for clarification.

Gottfried