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glossary
Impressions per hour
Impressions
per minute
In-line finisher
iph
ipm
JPEG
Just-in-time printing
Knockout
L/G
Lamination
Lead edge
Leaf
LEF
Lightfastness
Lightness
Lines per inch
Long edge feed
Long grain
Lookup table
The term most commonly used with offset printing for measuring print
speed. One impression can consist of multiple images on a large sheet
that will be cut into smaller sized sheets after being printed.
The term most commonly used with offset printing for measuring print
speed. One impression can consist of multiple images on a large sheet
that will be cut into smaller sized sheets after being printed.
A finishing device, such as a folder or stitcher, that is directly
connected to a digital printer. Paper moves directly from the printer into
the finishing device.
Short for impressions per hour.
Short for impressions per minute.
Short for Joint Photographic Experts Group. An industry body that has
defined a standard for digital compression of image graphic files. The
file size is directly proportional to how much data is discarded.
Documents stored digitally and then printed in the exact quantity
required at the precise time required.
When printing a shape or type in colour, the shape is printed by
eliminating all background colours. This results in a pure colour against
the paper.
Short for long grain.
A sheet covered with a thin layer of polyester (laminate) to yield a
strong and washable surface.
Feed edge of the paper.
Consists of two pages (front and back of a sheet) in a comb bound or
wire bound book.
Short for long edge feed.
The degree to which a printed page will resist colour changes when
exposed to light.
The darkness or lightness of a hue. One of the three characteristics that
describe colour (along with hue and saturation). Also called value.
A measure of resolution, especially with halftone screens. The number of
lines, or rows, of halftone dots per linear inch. See screen frequency.
The longest edge of the paper is fed into the printer first.
Paper in which the orientation of fibres is parallel to the long edge of
the sheet. For example, in an A4 sheet, the fibres of a long grain sheet
are parallel to the 297 mm dimension of the page.
A reference file used to convert images from one colour space to
another, such as converting RGB pixels into CMYK pixels for printing.
G – 7
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