iGen_DesignersGuide_lowres

Opacity
Opacity impacts the ability of a printed image to show through from the
opposite side of a sheet or from another sheet below it. To increase a
paper’s opacity, filler may be added to increase thickness or be applied as
a coating.
Opacity is measured according to how much light a sheet blocks and is
expressed as a percentage between 0 and 100. Most papers fall within the
80% to 90% range. However, an opacity of 98% will prevent a printed
image from showing through on the opposite side of the sheet.
Recommendations for Opacity
• Choose paper with high opacity when printing on both sides of the paper
or when heavy dry ink coverage will be applied.
24 Digital Printing Reference