whiteprint

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Related to Diazo copier: Diazo copy

white·print

 (wīt′prĭnt′, hwīt′-)
n.
A photomechanical copy, usually of a line drawing, in which black or colored lines appear on a white background.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.