04308326 is referenced by 15 patents and cites 6 patents.

A computer-generated halftone contact screen is disclosed which consists of a rectangular array of small abutting square areas each of uniform transmittance (density), in which the transmittance (density) of the squares is described by a random variable whose distribution is controlled to give the screen a desired reproduction curve. The facsimile produced using the screen, its equivalent produced by computer-assisted means, and its representation in computer memory are disclosed.

Title
Halftone contact screen and photographic method of making the screen
Application Number
6/24592
Publication Number
4308326
Application Date
March 28, 1979
Publication Date
December 29, 1981
Inventor
John L Wirth
408 Greenwood Pl., Syracuse, 13210
NY, US
IPC
G03B 27/76
G03F 5/00
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