Pro 7900 and 9900 Field Repair Guide 10/6/10
Glossary Printer Component, Software Item, LCD Display, Printer Button Page 423.
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.
CR Slant
A term that refers to a mechanical print head alignment that ensures that an ink jet’s print heads
nozzles are on the same vertical plane. (Also known as CR Slant.) The head is rotated until it is ver-
tically linear.
Debris: A term that refers to unintended ink on the page deposited by Ink soaked debris
dropping from the print head.
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