Upgrade and Development of Magnetic Tape Drives for M-20 and M-220 Computers

Abstract For many machines handling lightweight, flexible sheets, it is necessary for the sheet to transit an open space. Examples include magnetic tape drives, xerographic copiers, and sewing machines. The nonlinear theory of the elastica has often been used to model nonlinear, static deflections. Dynamic modeling is more difficult, and far less studied. Recently, however, L. Mansfield and J.G. Simmonds (1987) have considered the dynamic deflection of a sheet emerging from a horizontal channel at constant velocity and subjected to gravity loading. In this paper, we consider a generalization of that problem to include arbitrary exit angles, and an accelerating “feed” rate. Gravity loading is retained. The resulting nonlinear equations of motion are tractable and are solved numerically.

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Resolution Limits of Timing-Based Servo Schemes in Magnetic Tape Drives

IEEE Transactions on Magnetics ◽

10.1109/tmag.2015.2436718 ◽

2015 ◽

Vol 51 (11) ◽

pp. 1-4 ◽

Cited By ~ 4

Author(s):

Simeon Furrer ◽

Angeliki Pantazi ◽

Giovanni Cherubini ◽

Mark A. Lantz

Keyword(s):

Magnetic Tape ◽

Resolution Limits ◽

Magnetic Tape Drives

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Dynamic Deflection of Paper Emerging from a Channel

Journal of Vibration and Acoustics ◽

10.1115/1.2930248 ◽

1992 ◽

Vol 114 (2) ◽

pp. 187-193 ◽

Cited By ~ 24

Author(s):

J. Stolte ◽

R. C. Benson

Keyword(s):

Dynamic Modeling ◽

Nonlinear Theory ◽

Feed Rate ◽

Magnetic Tape ◽

Constant Velocity ◽

Open Space ◽

Equations Of Motion ◽

Nonlinear Static ◽

Nonlinear Equations Of Motion ◽

Magnetic Tape Drives

In many machines handling lightweight, flexible sheets, the sheet must transit an open space. Examples include magnetic tape drives, xerographic copiers, and sewing machines. The nonlinear theory of the elastica has often been used to model nonlinear, static deflections. Dynamic modeling is more difficult, and far less studied. Recently, however, L. Mansfield and J. G. Simmonds (1987) have considered the dynamic deflection of a sheet emerging from a horizontal channel at constant velocity and subjected to gravity loading. In this paper, we consider a generalization of that problem to include arbitrary exit angles and an accelerating “feed” rate. Gravity loading is retained. The resulting nonlinear equations of motion are tractable and are solved numerically.

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Demonstration of the Use of Tape-Recorded Information from a High Vacuum Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100063007 ◽

1969 ◽

Vol 27 ◽

pp. 218-219

Author(s):

Richard E. Hartman ◽

Roberta S. Hartman ◽

Peter L. Ramos

Keyword(s):

Information Retrieval ◽

Electron Microscope ◽

Magnetic Tape ◽

High Vacuum ◽

Data Retrieval ◽

Electronic Information ◽

Electronic Data ◽

Subsequent Processing ◽

Continuous Record

We have long felt that some form of electronic information retrieval would be more desirable than conventional photographic methods in a high vacuum electron microscope for various reasons. The most obvious of these is the fact that with electronic data retrieval the major source of gas load is removed from the instrument. An equally important reason is that if any subsequent analysis of the data is to be made, a continuous record on magnetic tape gives a much larger quantity of data and gives it in a form far more satisfactory for subsequent processing.

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