Definitions - Xerox DocuPrint C55 Service Manual

DEFINITIONS

Image Quality Defect Definitions
NOTE: When referring to a print from this
machine, the front of the machine is the
location where a user of the machine would
normally stand to read the control panel.
Prints exit from the front to the rear and are
deposited face down on the top cover. The
lead edge of the print is the print edge that
comes out first.
Background - Randomly distributed toner
particles in the non image areas.
Background can be uniformly distributed
over the entire surface of the print or only in
localized areas.
The density of the background can vary from
barely visible to extremely dark.
Bad text, black, - Text that is fuzzy, broken
up, is too wide or " fat" , or contains hollow
characters.
Bad text, color, - Colored text that has poor
color fidelity or text that is fuzzy, broken up, is
too wide or " fat" , or contains hollow characters.
Bands - Bands are wider than lines.
lines, bands, streaks.
Banding - Repeating bands.
Blank print - a print with no image.
Blurred or fuzzy images - Images that are
not clear, appear out of focus, or are broken
up. The defect can affect the entire print or
parts of the print.
Body deletion - a deletion on the print other
than on an edge or a corner.
Color incorrect, bad/poor - colors on the
print that are not acceptable reproductions of
the desired image.
Color Banding - Repeating color bands. See
lines, bands, streaks.
DocuPrint C55/C55mp/[NC60]
Color Contamination - Impure colors, that is,
desired colors that contain toner that is not
required. For example yellow that may have
some black toner mixed in or red that has
some cyan toner or other contaminate.
Color misregistration - color images that are
not superimposed and should be.
Colored streaks - a colored strip on the print
that differs in color or density from the
surrounding area. See lines, bands, streaks.
Debris Centered Deletion, - A deletion,
typically in a solid area, that contains a dark
spot in the center of the deleted area. See
deletion.
Deletion - The absence of toner from a part of
the desired image. With multicolored images,
the result can be white, light or colored spots,
lines, streaks bands or untrue colors on the
print. If all toner is absent, the defect is
classified as a blank print. See Edge Deletion,
Trail Edge Deletion,
Deletions, Skips, Body Deletions, Washed Out
Image.
Density, high or low -
See High - The density of the developed image
on the print exceeds the MAX sample on the
Density SIR.
Low - The density of the developed image
on the print exceeds the MIN sample on the
Density SIR.
Edge Deletion, - An area of lighter or zero
density (a missing image) at the edge of a
desired image. See Deletion.
Fusing, marginal - the fused image be can
easily wiped off of the print.
Ghosting - The reproduction of a previous
image, usually caused
erasure of the image on the Drum.
NOTE: This defect, ghosting, is one of three
similar image quality problems listed below.
2/99
3-31
Refer to the other defects for additional
information.
Ghosting (Drum related).
Offsetting (Fuser related).
Residual Image (Cleaner related).
Graininess - An image defect that causes
solid areas to have a sandy looking surface.
Graininess is most noticeable in mid density
solid areas.
Gray balance incorrect - Grays are produced
with a color tint.
Halo, colored (or shadows around text) - A
colored ring, shadow, or fringe that appears
around text or lines.
Halo, white - A white ring, or fringe that
appears around text of lines that are on a
colored background.
Hollow Characters - Small circular shaped
deletions in image characters. The characters
Debris Centered
are not completely filled in with toner.
Job to job variability - Image quality
variations between prints of the same or
similar image from different jobs during the
same day.
resulting from a single selection of the start
print process).
Lead edge to trail edge streaks(s) - A streak
is a mark comprised of many small lines of
varying
appearance of a brush stroke.
bands, streaks.
by inadequate
IMAGE QUALITY DEFECTS
(A job includes all the prints
length and width giving the
See lines,
IMAGE QUALITY RAPs