IBC: Inside back cover.
IFC: Inside front cover.
Image Area: That portion of the printing plate that carries the ink and prints on paper.
Image Setter: High resolution, large format device for producing film from electronically generated page layouts.
Imposition: Arrangement of pages so that they print correctly on a press sheet, and the pages are in proper order when the sheets are folded.
Impression: Product resulting from one cycle of printing machine. The pressure of the image carrier, whether it be the type, plate or blanket, when it contacts the paper.
Index Bristol: A relatively thick paper stock; basis size---25 1/2 x 30 1/2.
Indicia: Markings pre-printed on mailing envelopes to replace the stamp.
Industrial Papers: A term used to denote papers such as janitorial, sanitary or heavy packing papers.
Ink Fountain: The device which stores and meters ink to the inking rollers.
Ink Holdout: A quality of paper to be resistant to ink absorption, allowing the ink to dry on the paper surface.
Ink Mist: Any threads or filaments which protrude from the main printed letter body of long inks, as seen in newsprint.
Ink Setting: The inertial resistance to flow that occurs to ink as soon as it is printed.
Inkometer: A device used to measure the tack of ink.
Inserts: Extra printed pages inserted loosely into printed pieces.
Integral Proof: A proof made by exposing each of the four-color separations to an emulsion layer of primary colors. These emulsion sheets are stacked in register with a white sheet of paper in the background. Types of integral proofs are cromalin, matchprint, ektaflex, and spactraproof.
Interleaves: Extra blank pages inserted loosely into book after printing.
Iridescent Paper: A coated stock finished in mother-of-pearl.
Italic: Text that is used to denote emphasis by slanting the type body forward.