Talk:Tailing in graphics or image revelation

section 1, untitled
Javier Collazo´s Encyclopedic Dictionary of Technical Terms indicates the following,

Facsimil .Tailing is a Reproduction deffect consisting of a rapid variation of black tone toward white in the original document traduced to gray changing gradually to white in the received document (CEI/77 55-80-175)  — Preceding unsigned comment added by 186.136.38.61 (talk) 01:15, February 9, 2012‎