insert
A special advertisement of one or more pages, preprinted for insertion in a publication.

inside focus
That part of an image forming optical system where light rays converge toward the focus

IntelliDot
A high-quality halftone screening method developed by Optronics.

intaglio
Type of press or printing technique which uses engraved plates (pronounced “in-TAL-ee-oh”). The image on the plate is engraved into the plate’s surface; then, ink is spread across the plate and wiped off, and the plate is pressed into the paper with great force. The result is a “raised” printing on the surface of the paper. Paper money and postage stamps are often printed on intaglio presses. Also called ‘gravure’

Intellifont
A font technology that is used by HP but that was originally developed by Agfa. It is a scalable font format in which the character data are stored as mathematical outlines. This enables a single font to be used for all sizes as the outline data can be scaled to any required size. The other benefit of using a scalable outline is that as it does not have a specific resolution, the printed image is always produced at the maximum resolution of the printer. The Intellifont font format is supported by all HP LaserJet printers from the HP LaserJet III onwards.

intensity
An expression of a light source illuminance.

interactive
A device or software program that varies its course of action as a result of continuing input from the user.

interface
- The point of connection and communication between two independent devices.
- An intermediate device, sometimes referred to as black box, that is used to connect one device to another when the devices have different connectors, data stream, formats or protocols. .
- A user interface is the characteristics of the interaction between the computer system and the user, sometimes called the human/computer interface.
- Any hardware or software device that allows information to be shaded between two computerized devices, such as a modem

interleave
An extra blank page inserted loosely into printed pieces.

intranet
A network setup for communicating within a company that uses Internet interfaces and data protocols.

IP
Abbreviation for Internet Protocol

IPA
- Abbreviation for the International Phonetic Alphabet
- Abbreviation for the International Phonetic Association, which defines and maintains the International Phonetic Alphabet.
- Abbreviation for International Prepress Association, a nonprofit professional trade association comprised primarily of color separators.

IPA Standard Color Reference
Printed samples of SWOP inks used for publication proofing and printing. The Hi-Lo Reference illustrates the high and the low density for each ink. The Single Level Color Reference is printed at the optimal standard density.

IPDS
A page description language used by IBM for their printers
IPP
Abbreviation for in-Plant Printing

IPX/SPX
Abbreviation for Internet Packet eXchange/Sequential Packet eXchange, the network protocol used by Novell servers.

IR
Abbreviation for Infra Red.

irrational screen angles
Screen angles whose tangent is an irrational number. (In trigonometry a tangent is computed as side opposite over side adjacent.) Irrational numbers cannot be expressed exactly; they must be rounded off. PostScript has difficulty calculating irrational screen angles, and uses instead a rational screen method.

IRS
Abbreviation for In-Rip Separation, the technology used in most RIPs to perform color separations. (I think the abbreviation is also used for another wildly popular service provided by the US government.)

IRT
Abbreviation for In-Rip Trapping

IRQ
Abbreviation for Interrupt ReQuest

IS
Abbreviation for Information Services, any issue or objective related to the use of computer technology within an organization.

ISA
Abbreviation for Industry Standard Architecture

ISBN
Abbreviation for International Standard Book Number, a barcode identifying commercial books.

ISDN
Abbreviation for Integrated Services Digital Network, a high-speed remote communication protocol. In Europe, ISDN was pretty popular in prepress because it offers 2 data channels of 64 Kb/s each and a classic telephone line in one package.

ISO
Abbreviation for International Standard Organization, a standardization committee

ISP
Abbreviation for Internet Service Provider, an organization that provides another organization or individual with access to the Internet.

IT8/WG11 committee
A group of people striving to pursue color communication and control specifications focusing on standards for RGB, CMYK, color transforms, scanning targets and multivendor system calibration. This working group is under the IT8/SC1 technical subcommittee of the ANSI IT8 committee.

italic
A type style in which characters slope to the right. Italic is effective alternative to using bold face for emphasis.

ITU
Abbreviation for International Telecommunication Union, a standardization committee

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