Recorders – Magnetographic
Patent
1986-02-13
1987-01-06
Evans, Arthur G.
Recorders
Magnetographic
3461531, 358300, G01D 1506
Patent
active
046350748
ABSTRACT:
An improved electrographic stylus recording apparatus wherein magnetically attractable toner powder used during imaging, but not forming a part of a toner image, is returned from one side of a stylus array to the toner powder hopper of the apparatus. The toner powder is transported around the stylus array by the use of fixed magnets disposed within two rotatable cylindrical sleeve members disposed on opposite sides of the stylus array. A further cylindrical sleeve member having a rotatable magnetic field producing means within the sleeve attracts toner powder from the cylindrical sleeve disposed on the toner powder hopper side of the stylus array for delivery to the toner powder hopper.
REFERENCES:
patent: 4460907 (1984-07-01), Nelson
patent: 4464672 (1984-08-01), Lindahl
Evans Arthur G.
Marben Robert L.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
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