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CAKING
Build up of dried ink.
CALIPER
A precision tool used to measure thickness, depth, inside diameter,
and outside diameter. The measuring units are called mils or points.
CAMERA-READY ART
Black and white or color-separated artwork supplied in its final
form for printing preparation. Typically, it requires no modification
other than photo enlargement or reduction.
CARRIER
A paper or film for pressure sensitive labels. Typically, it has
a silicone coating to allow easy removal of the label.
CAST COATED
A high-gloss enamel finish.
CAST-COATED PAPER
A paper coating which is allowed to harden or set while in contact
with a finishing surface. In general, cast-coated papers usually
have a high gloss finish.
CAVITY
Usually refers to the engraving on a rotary die cutter that die
cuts a single shape.
CENTRAL IMPRESSION
A press with a number of printing units around a large cylinder
that serves as the impression cylinder against which the substrate
rides.
CHALKING
When the ink was not properly printed and can be rubbed off like
a powder.
CHARACTER
Each individual letter, punctuation or symbol of any typeface.
CHEMICAL DRUM LABEL
A label of durable material (like vinyl or polyester) which resists
adverse conditions associated with chemical drum containers.
CHEMICAL RESISTANCE
The resistance of a pressure sensitive label to
the deteriorating effects of chemicals, under specified conditions.
CHOKE
A slight reduction of items from which color is knocked out of a
background.
CIRCUMFERENCE
The length around a circle.
CLEAR COAT
A coating that protects the printing and surface of a pressure sensitive
label from abrasion, sunlight, chemicals, moisture, or any combination
of these. Varnish and lacquer are examples of clear coats.
COADHESION
The ability of an adhesive to stick to itself.
COATED PAPER
General term applying to all papers which have been surface coated
with pigments.
COATING
In printing, an emulsion, varnish or lacquer applied in-line or
off-line, often over a printed surface to give it added protection.
COAT WEIGHT
The amount or weight of coating per unit area. This is expressed
in various units including grams per square meter or pounds per
ream. Applies to adhesives, primers,
varnishes, and lacquers.
COHESION
The internal strength of a pressure sensitive adhesive, its resistance
to cold flow, and its resistance to failure (or splitting) when
labels are removed of placed under stress.
COHESIVE FAILURE
The breakdown of molecular bond by which particles of a body, or
bodies, are united.
COHESIVE STRENGTH
The internal strength of the adhesive. The measure of a label's
resistance to removal.
COLD FLOW
Steady deformation of a pressure sensitive adhesive under stress.
COLORFASTNESS
The ability of a pressure sensitive label to retain its true color
under normal conditions and/or to resist change in color when exposed
to light, heat, or other influences.
COLOR MATCHING
To duplicate the sample of the color given.
COLOR OVERLAP
When one color is slightly covering another.
COLOR OVERLAY
Transparent sheet that lays on top of the black
& white which indicates the colors of the artwork.
COLOR PROOF
A printed copy of the artwork which gives a simulated impression
of the final printed product.
COLOR SEPARATION
The process of separating a color image into its individual printing
colors.
COLOR STATIONS
There is one station or set of rollers for each individual color
on press.
COMPOSITE ART
Black and white art in which all colors are illustrated on one piece
of paper; not color separated.
COMPUTER IMPRINTABLE LABELS
Typically, pre-printed or imprinted utilitarian labels carrying
variable information, such as a barcode and price.
CONFORMABILITY
The ability of a pressure sensitive label to yield to the contours
of a curved or textured surface.
CONTINUOUS LABEL
Fan-folded labels manufactured from a continuous web of label stock
which is not cut into units prior to packaging. Continuous labels
are mostly used for data processing applications.
CONVERTER
Refers to that type of manufacturer who produces plain or printed
rolls, sheets, bags or pouches, etc., from rolls of film, foil or
paper, including pressure sensitives.
CORE/CORE SIZE
Refers to the inside diameter of the (cardboard) core in a roll
of labels.
CORNER RADIUS
Describes the arc or curvature of the die blades where they meet
so that they can impart a rounded corner to a die cut label.
COUPON BASE
The clear base in a dry peel label construction. Usually used for
instantly redeemable coupons. The clear base is combined with a
face material in a specialized laminating process. When the printed
face material (or coupon) is removed, the clear base remains on
the substrate.
COVERAGE
The degree in which a base material is covered. The mileage of an
ink or coating.
CRAZING
The network of small cracks that can appear in a varnish coat or
plastic face material. They are usually caused by expansion and
contraction during weathering, or by excessive solvents in an ink
system.
CREEP
The lateral movement of a pressure sensitive label on a surface
due to low cohesive strength.
CROP MARKS
Marks made on the outer edges of artwork to designate the areas
to be printed or trimmed off.
CROPPING
Cutting off unwanted areas of any artwork or photograph.
CROSS-DIRECTION/CROSS-WEB
The direction perpendicular to the machine direction in the plane
of a printing material.
CRUSH CUT
A cut made by a rotary blade in contact with an anvil or base roll.
CURE
The step in which you treat plates with heat to make them infusible.
CURL
The tendency of paper to bend or warp, either by itself or because
of a coating or laminate.
CURVE DIRECTION
The direction of the web on press.
CUT-OFF
In web printing, the cut or print length corresponding to the circumference
of the plate cylinder and/or die cutter; repeat length.
CYLINDER
In flexography, most rollers in the printing press are called rolls
with the exception of ones on which the rubber plates are mounted,
and the one which receives the impression. These are usually referred
to as cylinders, i.e., plate cylinder, impression cylinder.
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