Browse Prior Art Database

Two Contour Knife and Head Combination for Flexible Disk Access

IP.com Disclosure Number: IPCOM000085299D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

McGinnis, BW: AUTHOR [+2]

Abstract

A blade having a "hourglass" contour, as described in the IBM Technical Disclosure Bulletin, Vol. 18, No. 10, March 1976, pages 3364 and 3365, is comounted with a head for penetrating a flexible disk pack a, Fig. 1 to a desired radial (track) depth b. The contour provides a platform for stabilizing displaced disk trajectories and for permitting the head to be positioned in stable low flying transducing engagement.

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Two Contour Knife and Head Combination for Flexible Disk Access

A blade having a "hourglass" contour, as described in the IBM Technical Disclosure Bulletin, Vol. 18, No. 10, March 1976, pages 3364 and 3365, is comounted with a head for penetrating a flexible disk pack a, Fig. 1 to a desired radial (track) depth b. The contour provides a platform for stabilizing displaced disk trajectories and for permitting the head to be positioned in stable low flying transducing engagement.

The transducing head may be mounted below the two-stage knife d, or it can be made a part of the blade e, Fig. 3.

The device radially penetrates the pack by selective increments (Fig. 2), and the two-stage blade contour effectively irons out any wobble or jitter in the trajectories of the displaced disks (Fig. 4).

This presents the recording medium to the transducer in a true and stable condition. The effect is symmetrical relative to the recording surface trajectory on both sides of the exposed interface, and, therefore, the head h, Fig. 4, can be located for floating communication with either displaced surface.

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