Stylus Pro 4880 Field Repair Guide 1/17/08
Glossary Printer Component, Software Item, LCD Display, Printer Button Page 208.
Drop of Ink: Ink that appears to have dripped from the print head, or any other component of the
ink supply.
Dye Ink: Ink that colors the printed surface with dye. It is less durable than pigment ink, but
has a wider color range (gamut).
Electronic Alignments: Printer adjustments, which are performed using software routines that, allow the
printer to compensate for physical variations in its mechanism.
Error Diffusion: The type of dithering (screening) proprietary to Epson, that employs a random dot
pattern to ensure that the human eye can discern no pattern.
Flight Time: The time it takes a drop of ink to travel from the print head to the printable surface.
Gamut: The range of colors that a printer can produce.
Ghosting: A term that refers to components of an image that are intended to be on top of each
other (or adjacent), but are offset.
Gradient: A smooth transition between one color shade, and the next. A continuous tone image
requires a smooth gradient for all its tonal shifts.
Grainy: A breakdown of the “illusion of continuous tone”. A printed image that does not have
smooth tonal transition, and sharp detail.
Head Angular Adjustment:
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 the B head slant or the C head slant.) The
head is rotated until it is vertically linear.
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