Electromagnetic gray scale printer

Details Electromagnetic gray scale printer Electromagnetic gray scale printer

1989-11-13

1991-08-06

Griffin, Donald A.

Recorders

Electric recording

Electrochemical

346154, 358300, G01D 1506, H04N 123

Patent

active

050381580

ABSTRACT:
A gray scale image poster printer reproduces a digitally stored bit map image on a printer using an electrostatic and magnetic toner to generate gray scale images by expanding each line of the original stored image into a plurality of subpixels along the horizontal scanning lines and by synchronizing the printing of the subpixel lines with a changing magnetic field that changes the amount of toner deposited in each subpixel.

REFERENCES:
patent: 4357901 (1982-11-01), Fagen et al.
patent: 4760410 (1988-07-01), Kishi
patent: 4814886 (1989-03-01), Kuge et al.

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