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GEAR MARKS
A defect in flexographic printing. Usually appears
as uniform spaces, lateral variations in tone exactly corresponding
to the distance between gear teeth.
GEARE STREAKS
In printing, parallel streaks appearing across the
printed web at the same interval as the gear teeth on a cylinder.
Same as gear marks.
GHOSTING/GHOSTS
Indistinct image patterns appearing as solids or
reverse printing, typically caused by poor ink distribution, inconsistency
in plate and/or substrate thickness, and/or poor base ink formulation.
GLOSS
Characteristic of the surface which causes it to
reflect light at a given angle.
GRAIN
In papermaking, the direction in which most fibers
lie and correspond with the direction of the paper traveling through
the paper machine.
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