Graphics Reference
In-Depth Information
Barrel fold:
Fold style where the outer
edge of each panel or page is folded in
toward the other resulting in six panels or
pages. Also called
roll fold
.
A
A sheets: ISO paper sizes based on met-
ric dimensions. The ISO standard is used
everywhere except North America for
determining standard trim sizes.
Baseline:
A horizontal line on which type
sits.
Basis weight: In the U.S. and Canada, the
weight, in pounds, of a ream 500 sheets)
of paper cut to basic size.
Accordion fold:
Zigzag type of fold in a
sheet of paper where two or more parallel
folds open in the manner of an accordion,
permitting the paper to be extended to its
full breadth with a single pull. Also called
a
fan fold
.
Bitmap:
Computer image composed
of pixels.
Blanket:
Rubber-coated pad mounted on
a cylinder of an offset press that receives
the inked image from the plate and trans-
fers it to the paper surface.
Agricultural fibers:
Fiber harvested from
tree-free organic sources that are grown
specifically for use in paper production
and often bearing the label “tree-free.”
Bleed:
A printed area that extends beyond
the trimmed edge of a printed piece.
Bleed areas generally range from
1
⁄
8
” to
1
⁄
4
” (3. 175 mm to 6.35 mm).
Agricultural residues:
Fibers recovered
from annual crops usually planted as food
crops or for commercial use (such as
corn, sugar cane, and wheat) that is used
to make paper.
Aqueous coating: A water-based coating
that is applied at the end of a press run
to protect a printed piece against mois-
ture, dirt, and scuffing.
Asymmetry:
Elements that when placed
on opposite sides of a page, line, or plane
are not symmetrical.
B
B sheets:
ISO paper sizes slightly larger
than A sheets. The ISO standard is used
everywhere except North America for
determining standard trim sizes.
Bleeds are produced by printing a piece on a sheet of paper
larger than the trim size of the final piece and then cutting
away the edges.
Bar code: A series of horizontal or vertical
parallel lines representing a code that can
be optically read and interpreted by a bar
code scanner.
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