Recorders – Magnetographic
Patent
1974-12-09
1976-06-22
Eddleman, Alfred H.
Recorders
Magnetographic
360 56, G01D 1512, G01D 1520
Patent
active
039654788
ABSTRACT:
A multicolor magnetographic printing system wherein a magnetizable surface is recorded upon with a different recording wavelength for each color to be printed. Toner is supplied which includes a mixture of different types of particles, each having a different color. The differently colored particles each maximally adhere only to areas on the surface recorded at a wavelength specific for the particular particle type. The toner particles are varied in magnetic susceptibility as well as linear dimensions so as to adjust their maximum adherence for the particularly matched wavelength. Such a system may further include an image enhancement system to ensure that the proper toner particles are concentrated in the appropriate areas. The toner is transferred to a paper surface by both preheating the paper before transfer and heating it afterwards to fix the toner onto the paper surface.
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patent: 3512169 (1970-05-01), Trimble
patent: 3613100 (1971-10-01), Kaufer
patent: 3665484 (1972-05-01), Foster
patent: 3757353 (1973-09-01), Jeffers
patent: 3781903 (1973-12-01), Jeffers et al.
patent: 3804511 (1974-04-01), Rait et al.
patent: 3823406 (1974-07-01), Jeffers
patent: 3824601 (1974-07-01), Garland et al.
Bartlett Milton D.
Eddleman Alfred H.
Inge John R.
Pannone Joseph D.
Raytheon Company
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