double dot halftone

double dot halftone

[¦dəb·əl ‚dät ′haf‚tōn]
(graphic arts)
A halftone in which two halftone negatives have been combined into one printing plate, resulting in a greater tonal range than in a conventional halftone.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.