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1/0 “One over zero” refers to printing with one colour on one side of a
sheet, leaving the other side blank.
2-up/4-up/8-up The number of images printed on one side of a sheet.
4/0 “Four over zero” refers to printing with four colours on one side of a
sheet of paper, leaving the other side blank.
4/4 “Four over four” refers to four colour printing on both sides of a sheet.
6/2 “Six over two” refers to printing with six colours (four process colours +
2 spot colours) on one side and two colours on the other side. This is
common with specification sheets where full colour is required on the
front but only black and one accent colour is needed on the back.
A0 Standard ISO cut sheet size of 841 x 1189 mm.
A1 Standard ISO cut sheet size of 594 x 841 mm.
A2 Standard ISO cut sheet size of 420 x 594 mm.
A3 Standard ISO cut sheet size of 297 x 420 mm.
A4 Standard ISO cut sheet size of 210 x 297 mm.
AM screening Conventional “lined” halftone screening that breaks up the image into
regularly spaced dots of varying size to simulate the original image.
Anti-aliasing A process that removes jagged edges from curves and lines (including
characters), producing smooth lines and edges.
APR Creo Automatic Picture Replacement. An extension to PostScript that
provides for automatic replacement of low-resolution placeholder images
with high-resolution images. Similar to OPI.
Aqueous coating A water based coating applied after offset printing, which gives a gloss,
dull or matte finish and will accept ink jet printing to add variable data.
Artifact A repeatable defect in a printed image caused by some discrete element
in the printing system.
Backing-up Printing the reverse side of a sheet that is already printed on one side.
Banding Undesirable horizontal or vertical bands on a printed image.
Binder’s creep A term used to describe how the gutter margin varies from page to page
when large signatures are folded and trimmed (the printed area moves
slightly with respect to other pages). Adjustments are made at the DFE
to correct for creep.
Bitmap An image file consisting of a two-dimensional array (or grid) of pixels.
Also called a raster image.
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Glossary