Jacket
See: Dust Jacket.
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Jacketing
The application of dust jackets on finished casebound books.
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Jaggies
A colloquial term for the jagged edges formed on raster-scan displays when displaying diagonal lines.
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Jiffy Bag
A padded mailing bag, available in various sizes.
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Jiffy Rigi Bag
A cardboard-type mailing bag available in various sizes.
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Jog
(1) To align or even flat sheets of paper to a common edge or edges.
(2) The intermittent turning on and off of a press to position, clean or put on a plate or blanket.
(3) To align folded sections so edges are even.
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Joint
The flexible hinge where the cover of a casebound book meets the spine, permitting the cover to open without breaking the spine of the book or breaking apart signatures; also called Hinge.
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JPEG
Joint Photographic Experts Group. An image compression standard and file format. Some JPEG formats lose image data and are not suitable for detailed images. (Also the name of an image format that offers more flexibility than GIF. JPEG supports 24-bit color and glossy compression.)
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Justification
The art of using spaces and words to fill a specified length making both the right and left margins even with each other; application programs such as QuarkXPress and InDesign perform this function automatically.
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Justified
Text copy typeset flush to both left and right margins.
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Justify
To set type or prepare text composition to a specified width or measurement so that the left and/or right-hand margins of the printed matter will be aligned. Justification may be accomplished by adjusting the spacing between words, or between words and characters (letterspacing) so as to fill the measure with each full line of type.
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