- Object-Oriented:
An approach in drawing and layout programs that treats graphics as line and arc segments rather than individual dots.
- OCR (Optical Character Reader):
A device that allows a computer to read printed text and transform it into electronic text which can be saved into an electronic file.
- Off-Press Proof:
A four-color proof generated before the production press run and before, or instead of, a press proof.
- Offset Lithography:
A printing method that uses the repellent properties of oil and water to reproduce an image on a flat surface that contains both the image and non-printing areas. This printing process uses an intermediate blanket cylinder to transfer an image from the image carrier to the substrate.
- Orphan:
Where the last line in a paragraph winds up isolated on top of the next text column or page.
- Orthochromatic:
Photographic surfaces sensitive to ultraviolet, blue, green and yellow rays, but insensitive to red rays.
- Out Of Register:
Two or more colors not exactly aligned when printed.
- Outline:
A typeface in which the characters are formed with only the outline defined rather than from solid strokes.
- Output Devices:
Any device used to output digital files from a computer for viewing purposes; this can be in the form of printed products or displayed on a monitor for websites and presentations.
- Output Profile:
A profile for an output device such as a printer, proofing device or monitor. Not to be confused with a destination profile.
- Output Resolution:
The dots per inch (DPI) of an output device.
- Output:
Processed optical or electronic data transferred to another device such as a secondary storage unit, a laser printer, an electronic manipulation station, or an analog or digital proofing device.
- Outserts:
This term includes onserts, polybag label carrier cards, or cover tips, which only cover one side (usually the cover) of the publication.
- Overlay:
A tissue over the base keyline for writing corrections and instructions such as indicating color breaks.
- Overprint:
To print over an area that has previously been printed on.