Apparatus and method for modulating the area of pixels for tone

Details Apparatus and method for modulating the area of pixels for tone Apparatus and method for modulating the area of pixels for tone

1992-10-01

1994-11-29

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358459, 346108, H04N 1387, G01D 942

Patent

active

053694970

ABSTRACT:
Printing apparatus and method particularly suited to provide a hardcopy of an image produced by medical imaging equipment or the like. The method produces an area modulation hardcopy having a large number of gray levels per area modulation cell (pixel) and a strong density sensitivity. Pixel areas are modulated in patterns consisting of pels which in turn are made up of subpels referred to as slices which are preferably added to minimum sized pels by pulse width modulating two different sized printing radiation beams.

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