PRELIMINARY STUDY INTO THE PRINCIPLES OF CONTINUOUS TONE ELECTROPHOTOGRAPHY.

摘要

This report describes all of the equipment necessary for the successful production and evaluation of electrophotographic prints. The two basic ingredients of the electrophotographic coating,namely,zinc oxide and resinous binder,are examined and the effect of different types of binders are evaluated. Using a Pliolite binder,the effect of change in particle size of the zinc oxide is studied. Change in particle size of the zinc oxide is used as a variable to show that higher charge acceptance is possible in an unsensitized system when small particle size zinc oxide is used. Particle size is also examined from the standpoint of its effect on spectral response of the coating,and spectrograms are presented showing that zinc oxide absorbs strongly in the ultra-violet and that changing the particle size does not shift this absorption curve. The effect of various additives to the coating slurry are discussed and their usefulness in improving tonal range is evaluated. (Author)