Frequency filtering characteristics of the halftone contact screening system

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Title: Frequency filtering characteristics of the halftone contact screening system
Author: Guttosch, Rudolph J.
Abstract: A simplified model of the halftone contact screening system was devised and tested to determine the applicability of the model for predicting frequency transfer characteristics of the system. The model was tested using illuminance sinusoids of varying frequency as input to the halftone system. The output was obtained by optically correlating the exposing sine wave with its halftone image. It was found that the halftone system is capable of transfering information at frequencies greater than the screen frequency, and that the model generally underestimates the ability of the system to reproduce high frequency information, although the basic shape of the function could be predicted. The descrepancies were attributed to the inability of the frequency domain model to deal with phase and partial dots.
Record URI: http://hdl.handle.net/1850/8302
Date: 1984-03

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