Publisher's Synopsis
Excerpt from Standard Practice for Operational Practices/Inspection and Quality Control for Alphanumeric Computer-Output Microforms
Proper com system performance requires controlling both character and background densities to insure good duplica tion of the camera film. Values covering line and background densities and uniformity are presented in this standard. The recommended Test Form Slide outlined in this stand ard contains density squares large enough to allow com operators to measure density on the film with an ordinary densitometer. Although measuring the large area density does not determine character line density, it is very useful in maintaining consistent exposure on the form slide. The form-slide exposure can then be compared to maintain proper exposure of characters from the image generator. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
