Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
A Study Of The Halftone Dot Characteristics Of Rapid Access Halftones, John Gilliatt
A Study Of The Halftone Dot Characteristics Of Rapid Access Halftones, John Gilliatt
Theses
Rapid access processing is a photographic processing method that combines high temperature processing and high energy developing agents to obtain very short induction periods, and thus, reduced processing times. In order to obtain maximum quality from the process, the rapid access halftone percent dot areas must be correctly evaluated according to established aim points. Traditional evaluation methods, either visual or instrumental, produce errors. These errors are the partial result of the unique dot characteristics of the process. These characteristics include soft, fringed dots; dots with low Dmax, found particularily in the shadow areas; loss of dot area on the tips …
Effect Of Plate Surface Characteristics On Image Reproduction In Electrostatic Planographic Platemaking, Sung Jae Lee
Effect Of Plate Surface Characteristics On Image Reproduction In Electrostatic Planographic Platemaking, Sung Jae Lee
Theses
Four different types of surfaces of aluminum plates; 1) brush grained, 2) chemically grained, 3) brush grained and anodized, and 4) electrochemical ly grained and anodized substrates coated with polyvinyl oxazol, an organic photoconductor were studied. The experiments were divided into two parts. The first part concerned with the photoelectric characteristics of the various surfaces, and the second part was involved with image quality relative to photoelectric properties of different substrates. The characteristics of each of the surfaces was briefly discussed. Photoelectric properties such as 1) photosensitivity, 2) spectral response, 3) surface acceptance potential, 4) dark decay, 5) light decay, …