| US 7,576,949 B2 | ||
| Servo track magnetic recording head for pre-erasing magnetic tape | ||
| Matthew P. Dugas, St. Paul, Minn. (US); and Theodore A. Schwarz, Woodbury, Minn. (US) | ||
| Assigned to Advanced Research Corporation, White Bear Lake, Minn. (US) | ||
| Filed on Aug. 13, 2007, as Appl. No. 11/838,006. | ||
| Application 11/838006 is a continuation of application No. 10/768719, filed on Jan. 30, 2004, granted, now 7,283,317. | ||
| Prior Publication US 2008/0037166 A1, Feb. 14, 2008 | ||
| Int. Cl. G11B 5/127 (2006.01); G11B 5/265 (2006.01) | ||
| U.S. Cl. 360—118 [360/121] | 7 Claims |
| 1. A compound magnetic recording head for pre-erasing magnetic tape, the magnetic recording head comprising:
a first substrate comprising a magnetically permeable thin film layer comprising a servo write gap pattern for writing a servo
pattern in a servo track of a magnetic media;
a second substrate spaced apart a predetermined distance from the first substrate and comprising a magnetically permeable
thin film layer comprising an erase gap pattern for pre-erasing the servo track, the erase gap pattern being at least as wide
as substantially the width of the servo write gap pattern; and
wherein the servo write gap pattern of the first substrate and the erase gap pattern of the second substrate are lithographically
printed using a single mask.
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