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Shown below are the definitions for: L
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lacquer See varnish; usually a clear, overcoating imparting such properties as high gloss, heat sealing, improved surface appearance, etc.. Historically have been organic solvent based, but can now be water based.
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laid pattern/paper A water mark pattern in paper resulting in parallel lines in both the machine and cross directions of the web of paper.
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landscape mode A printer (usually driven by a computer) output orientation in which the printed lines run parallel to the direction of movement of the paper; see "portrait mode".
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LASER coherent light An abbreviation or acronym for "Light Amplification by the Stimulation of Emission of Radiation".
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LASER cutting Coherent light of sufficient intensity to be able to physically cut or burn; used in delicate surgery for example.
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LASER printers Electrostatic /Xerographic printers using a LASER as the light source activated by an electronic media, rather than by optical means using reflected light from an original, as used in copiers to remove charges from the photoreceptor in the non-image areas.
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latex Naturally occurring liquid (rubber tree), but now synthetically produced, used as an adhesive in the coating of paper.
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laydown sequence See "color sequence".
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layout This is an artist's conception (the master plan or "blueprint") of the finished printed job. Layouts can be very rough, semi-comprehensive, or so comprehensive that nothing is left to the imagination.
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LCD Abbreviation for "liquid crystal diode"; used in electronic displays, such as on watches, but emitting no light; see "LED".
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ledger paper A strong , smooth writing paper, originally designed for accounting records and ledgers. Measured on a bond or business papers basic size of 17" x 22".
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LED Abbreviation for "light emitting diode"; used in electronic displays, such as on watches; see "LCD".
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length Describes a property of printing ink that is the distance a finger and thumb can be pulled apart while maintaining an unbroken "thread" of ink between the two; as such, inks can be described as "short" or "long". Length is related to both viscosity and tack, as a fluid or body property of ink.
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letter spacing The placing of a space between each letter of a word.
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letterpress printing A form of relief printing. The printing method where ink is applied on all raised areas on the plate; the non-image or background area is cut away or removed, i.e., .. relieved". Can be likened to a "rubber stamp", though the plate can be made of wood, metal, or other non-flexible material. Dry offset is really letterpress or relief printing, where the plate is a flexible synthetic material, with relief features, but can be run on an offset press (using no fountain solution).
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letterset See "dry offset".
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leveling The property of a coating or ink causing it to flow out as would a true liquid. As a corollary, a paint or coating that leaves "brush or roller marks" has poor leveling or flow properties.
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lift A pile of sheets of paper; usually the amount placed under the knife of a cutting or trimming (guillotine) machine.
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lignin A part of the "glue" in wood, naturally occurring, that holds the cellulose fibers together.
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line copy Any copy with no gradations in tone, suitable for reproduction, without using a screening technique.
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line holes The holes punched along one or both edges of a continuous form to feed by pins or sprocket the form through the imaging or functional device.
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linen finish An embossed finish to simulate the pattern originally obtained by pressing paper between sheets of linen cloth.
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lint Fibrous materials on the surface of a sheet of paper, but unlike fuzz, is not normally attached to the surface.
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lithographic printing Stone printing; see "offset lithography".
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localized watermark Watermarks (created by a dandy roll) arranged to appear at a definite location in a particular size sheet of paper.
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loft drying See "festoon" (2).
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logotype A single image which generally contains a symbol, trade mark, or identifying name of a business, association or product.
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logo See "logotype".
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long ink See "length".
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loose core When the paper at the core is not fastened properly to the core or comes loose, the core can rotate at a different rate than the winding or unwinding surrounding paper. This can cause tension and draw control problems in processing the roll.
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lubricants In coatings, chemicals added primarily to improve flow and finishing properties.
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l.a.b. See "color measurement".
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