Effects on magnetic toners in AC and DC magnetic fields

Magnetic forces acting on moving magnetic toners have been investigated by dropping the toners through DC and AC magnetic fields. A CCD (charge coupled device) camera system was used to observe the effects on magnetic toners in the magnetic fields, The distribution of toner chains in a DC magnetic f...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1991-11, Vol.27 (6), p.5426-5428
Main Authors: Horng, J.B., Huang, D.R., Wu, M.C., Fang, W.L., Yang, H.H.
Format: Article
Language:English
Subjects:
Applied sciences
Charge coupled devices
Charge-coupled image sensors
Coercive force
Coils
Exact sciences and technology
Laboratories
Magnetic field measurement
Magnetic fields
Magnetic forces
Other techniques and industries
Printing
Saturation magnetization
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Summary:Magnetic forces acting on moving magnetic toners have been investigated by dropping the toners through DC and AC magnetic fields. A CCD (charge coupled device) camera system was used to observe the effects on magnetic toners in the magnetic fields, The distribution of toner chains in a DC magnetic field depends on the distribution of applied DC magnetic force. After applying an AC magnetic field greater than the coercivity of the toners, the length of toner chains was reduced and the sliding velocity of the toner chains was increased as the applied AC magnetic field was increased. The effects on magnetic toners by applying an AC magnetic field can be considered as an AC demagnetizing effect.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.278860