ID

abbreviation for inside diameter. It is the usual designation for core sizes because the ID determines what size shaft the core will fit.

ILD

Infrared Laser Diode

imaging liner

the mid liner in some piggyback constructions will leave an image after impact printing. The image left behind leaves a record of variable information on the label that was applied to something else. Imaging liners are carbonless paper coated with a release coating.

IML

acronym for in-mold labeling.

Impact Printing

any printing system where a micro processor controlled hammer impacts against a ribbon and a substrate.

impregnate

to provide liquid penetration into a porous or fibrous material. Latex grades in Technicote's pressure sensitive line are latex impregnated.

imprinting

a technique in which changeable copy is applied to blank or previously printed labels, tags, etc. Originally it was a term used mainly in the marking machine industry to refer to printing by stencils or rubber mat printing. It can also refer to computer printing or typing of variable information. This most common information imprinted would be ship to information on labels or product identification. The ability to imprint variable information allows the consumer to use the same labels for many different products and customers. More recently variable information is imprinted with non impact methods. Some types are direct thermal, laser and thermal transfer.

industrial paper

a general term indicating papers which are manufactured for industrial uses such as impregnating, insulating, packaging as opposed to grades mainly used for writing and printing.

infra-red

part of the electromagnetic spectrum between the visible light range and the radar range. Radiant heat is in this range.

initial tack

the initial adhesion an adhesive offers at time of application. It needs to be sticky enough to hold the label to the substrate. The degree of initial tack that is desirable depends on the application. Adhesion to some difficult surfaces will not happen unless the adhesive offers high initial tack. On the other hand, some applications need an adhesive with low initial tack so that it can be repositionable. Generally rubber based adhesives and tactified acrylic adhesives offer high initial tack.

Ink Jet

a method of printing using liquid ink projected a drop at a time against a substrate.

ink receptivity

papers vary in their ability to accept various quantities of inks. Ink receptivity is frequently related to the porosity of the paper.

instantaneous adhesive

a type of heat sensitive adhesive that needs application of heat and pressure simultaneously. It is the opposite type compared to delayed action heat sensitive.

Institute USASI

a non-governmental organization responsible for the development of voluntary

Instron

an instrument used to determine the tensile and compressive properties of a material.

insulation

a coating or barrier designed to prevent the transmission of electricity.

Intercharacter Gap

The space between two adjacent bar code characters in a discrete code i.e., the clear space between two characters in USS-39.

Interleaved Two of Five Code

I 2/5

internal bond

a measure of the structural integrity of the paper. It is needed to prevent the delamination or peeling of paper during offset printing.

internal stress

strain created within the adhesive layer by expansion or contraction.

Ion Deposition

see Electrostatic.

IR

abbreviation for infra-red. See infra-red.

IR thermal

a type of direct thermal paper designed to be scanned in the infrared scale of light. Some users prefer this type because infrared scanners use less electricity than conventional scanners.