large format lenticular sheets in gauges of 0.050 inches and up are
manufactured at as near a constant pitch as possible.
However, any plastic sheet will vary slightly in size with temperature and
humidity changes. These changes even though small can result in "flip"
images placed behind the lenticular sheet to not change in a straight and
uniform manner. This is most noticeable on large size lenticular sheets; for
example, 48 x 96 inch sheet. Please allow your large lenticular sheet to
condition uniformly and pitch test the entire sheet before laminating to
should also be aware of the possibility of less than absolute straightness
of the printed lines from your inkjet printer or film recorder. This lack of
straightness from your printer can cause the same problem.
addition, please be aware that this problem can sometimes be eliminated by
re interlacing your "flip" image and using spacer or separator pixel lanes
between images. This is also used to reduce ghosting.