Stylus Pro 4880 Field Repair Guide 1/17/08
Glossary Printer Component, Software Item, LCD Display, Printer Button Page 207.
Glossary
Artifact A defect, that is within an image. It can mean something on the graphic that was not
intended, or something missing that was intended. All image quality defects are arti-
facts.
Bi-Directional Adjustment: An electronic adjustment, that ensures that a printer can coordinate left to right, with
right to left, printing.
Capped Position: The print head at it’s stand by position, with the cap mechanism sealing the nozzles.
Coating: The top layer of graphics paper (media) that consists of a special substance
designed to trap ink and keep it from being absorbed into the paper fibers. Non-paper
based ink jet media uses coating to allow the ink to bond with the surface. A coatings
purpose is to minimize dot gain, and control saturation.
Color Shift: An unintended change of a gradient or tone.
Continuous Tone: The qualities of a photograph that makes an image appear real. The smooth and life-
like transition from one color shade to the next, like in a photograph. Epson Ink Jet
printers are not continuous tone printers. But when working properly, their printed
images fool the human eye into seeing continuous tone transitions.
Debris: A term that refers to unintended ink on the page deposited by debris dropping from
the print head.
Deflected Nozzle: A nozzle is firing, but the ink drop is not landing where it is intended too. Irregular
spacing on the nozzle check pattern indicates this condition.
Dithering: The dot pattern placed on the printed surface to create and image. Also known as
screening.
Dot Gain: A drop of ink tends to travel out from its point of impact, as the media absorbs it. The
purpose of the coating (on the media) is to minimize dot gain.
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