Browse Prior Art Database

Hybrid Rotor Tape Support System for Rotating Head Wheel in a Helical Scan Magnetic Recording Device

IP.com Disclosure Number: IPCOM000089007D
Original Publication Date: 1977-Sep-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Baumann, GW: AUTHOR [+4]

Abstract

U. S. Patent 3,961,369 discloses a hydrodynamic and/or hydrostatic air bearing for a rotating head device. The drawings and description herein disclose a hybrid rotor which is an optimal design for the generic hydrodynamic and/or hydrostatic air bearing described in the patent.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 87% of the total text.

Page 1 of 2

Hybrid Rotor Tape Support System for Rotating Head Wheel in a Helical Scan Magnetic Recording Device

U. S. Patent 3,961,369 discloses a hydrodynamic and/or hydrostatic air bearing for a rotating head device. The drawings and description herein disclose a hybrid rotor which is an optimal design for the generic hydrodynamic and/or hydrostatic air bearing described in the patent.

Fig. 1 depicts the hybrid rotor. The rotor includes a hydrostatic region which covers the major portion of the rotor's surface. Adjoining the hydrostatic region is a hydrodynamic region. The hydrodynamic region is positioned about the read (R)/write (W) heads of the rotor.

Fig. 2 shows a cross section through the rotor of Fig. 1. This figure shows the relationship between the rotor's surface and the media or tape. Because of this optimal design, as the R/W heads are approached from the hydrostatic region, the recording platform (that is the separation between the rotor's surface and the media) decreases. This allows the tape to fly closer to the R/W heads.

Fig. 3 shows the rotor's surface with the hydrodynamic region leading and trailing the magnetic heads. For optimum performance, the leading hydrodynamic region is probably the more important of the hydrodynamic regions. The hydrodynamic action in this region must be enough to control the tape position about the heads. The region must be sufficient to cause wave minimization about the heads. The hydrodynamic region should also be as short ...