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Glossary

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Image Assembly
Process of assembling pieces of film containing images that will be carried on the same plate and securing them on a masking sheet that will hold them in position during the platemaking process; much of the function is now being performed by computers.

Image Setter
A generic term that applies to film-output devices for type and graphics. The difference between an imagesetter and a typesetter is in the format of the data that has been converted from discrete-character raster lines to raster date using bitmaps.

Imaging Area
The maximum area on the film or plate that can be imaged. This is always less than the maximum dimensions of the paper because presses cannot image to the edges.

Imposetter
An imagesetter capable of outputing a film flat with 4, 8 or more pages in imposed position.

Imposition
The postioning of pages on a signature so that after printing, folding and cutting, all pages will appear in the proper sequence.

Impression Cylinder
The cylinder on a printing press against which the paper picks up the impression from the inked plate in direct printing, or the blanket in offset printing.

Indicia
An imprinted designation on a mailpiece that denotes postage payment. (For example, a permit imprint in place of a postage stamp.) An indicia must include the words "First Class", "Presort First Class" (Prsrt First Class), "Presorted Standard" (PRSRT STD) or, if applicable, Nonprofit Organization (Nonprofit Org or Nonprofit) and below that "U.S. Postage Paid". It also includes the city and state the permit is held and the mailer's mailing permit number, except for company-style permits.

Ink Fountain
The device which stores and supplies ink to the ink rollers.

Ink Hold-Out
Resistance to the flow of ink pigments into the paper surface; good hold-out assures uniform halftone dots, intense color and crisp details.

Ink Mist
Flying filaments or threads formed by long low-track inks like newspaper ink.

Ink-Jet Printing
A plateless printing system that produces images directly on paper from digital data using streams of very fine drops of dye which are controlled by digital signals to produce images on paper.

Inkometer
An instrument for measuring the tack of printing inks.

Insert
A printed pieces prepared for insertion into a publication or another printed piece.

Inserting
Finishing operation that involves placing signatures in order one within another.

Internet
A network of networks that link workstations over telecomunication lines to share files and exchange e-mail internationally.

IR
Abbreviation for infrared radiation above 70 nm.

Iris43WIDE
The Iris43WIDE produces a double-sided digital proof after page impositioning. Prepunched media aligns on pin registration prior to imaging to enhance front-to-back registration accuracy. Low- and high-speed output provides the choice of speed versus resolution. The Iris43WIDE should be used as a contract proof only in "high-res" mode and only when color is not critical. At 360 dpi, it prints a 4-color, double-sided, 8-page signature in approximately 13 minutes. The Iris43WIDE replaces a blueline.

Iris4PRINT
The Iris4PRINT produces a single-sided proof of exceptional quality. It is used to proof color in conjunction with the Iris43WIDE, which is used to proof page impositioning. In the vast majority of jobs, these are the only proofs you will need. The Iris4PRINT replaces a matchprint

Italic
The style of letters that slant, in distinctition from upright, or roman letters. Used for emphasis within the text.