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The recording gap between stylus and dielectric image receptor in a magneto-electrostatic printer can be increased by using a magnetically responsive image receptor.
English (United States)
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Magneto Stylus Printing Technique
The recording gap between stylus and dielectric image receptor in a
magneto-electrostatic printer can be increased by using a magnetically
responsive image receptor.
In magneto-electrostatic non-impact printing, a stylus magnetically attracts a
toner that forms a "brush" with the surface of a dielectric image receptor over a
gap between stylus and receptor. The toner conforms to the divergent magnetic
flux lines, requiring extremely narrow gaps to obtain high resolution. Wider gaps
can be used by placing the dielectric image receptor on a magnetic base.
Referring to the Figure, dielectric image receptor 1 is mounted on a soft iron
drum 2 and the toner "brush" 3 is formed at the tip of stylus 4 that concentrates
flux from magnet 5. The flux paths between the stylus and receptor extend in
more nearly parallel lines since magnetic drum 2 acts as a keeper for magnet 5.
This effect permits the stylus-receptor gap to be increased while still maintaining