Method and apparatus for halftone reproduction of continuous ton

Details Method and apparatus for halftone reproduction of continuous ton Method and apparatus for halftone reproduction of continuous ton

1992-04-10

1995-03-21

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358298, 3461351, 347251, H04N 123, G01D 900, G01D 1510

Patent

active

054001471

ABSTRACT:
A multilevel halftone reproduction transparency medium and a method and system for reproducing images thereon. The transparency medium includes a substantially transparent carrier having first and second planar surfaces with ablative dye coatings thereon which are selected to render the medium substantially opaque in non-ablated areas, transparent in fully ablated areas, and semi-opaque in areas where one or the other of the coatings is ablated. A method and apparatus employ the medium to provide binary, trinary and quarternary gray levels in a hybrid halftone printing technique especially useful for printing radiographic images.

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