Xerox DocuPrint C55 Service Manual page 88

Light Streaks or Bands - Lower than desired
density image areas in the shape of streaks or
bands.
Lines, bands, streaks - a strip on the print
that differs in color or density from the
surrounding area.
A line is typically narrow in width and can be
any length.
A band is wider than a line.
A streak is comprised of many small lines of
varying length and width
appearance of a brush stroke.
Microdarks - Dark spots of any color, easiest
seen in non-image areas. The spots are much
larger than the toner particle size spots in
background.
Misregistered image - See the Image
Registration Specification.
Mottle - Small areas of low or light densities
within a darker solid area that makes the
overall solid area look measled, grainy or
sandy. The low density areas are random in
shape and size, The size typically is between
0.1MM to 1.0MM. Mottle is most noticeable in
high density solid areas.
Offsetting, fuser - The removal of toner from
the print by the fuser and the redeposition of
that toner on another area of the same print or
another print. Removing toner from the image
leaves the image rough and without gloss.
The redeposited toner may appear as a
duplicate image, partially shifted image, or
lines and streaks.
IMAGE QUALITY RAPs
IMAGE QUALITY DEFECTS
NOTE: This defect, fuser offsetting, is one of
three similar image quality problems, see list
below. Refer to the other defects for additional
information.
Ghosting (Drum related).
Offsetting (Fuser related).
Residual Image (Cleaner related).
Oil Marks - Dark round or irregularly shaped
marks caused by an oil leak or drips.
Print - A machine produced reproduction of an
giving the
electronic original store in memory.
Residual Image - A toner image that remains
on the Drum after cleaning. The next image is
placed on top of the residual image and both
images are transferred to the next print.
NOTE: This defect, residual image, is one of
three similar image quality problems, see list
below. Refer to the other defects for additional
information.
Ghosting (Drum related).
Offsetting (Fuser related).
Residual Image (Cleaner related).
Resolution - See the resolution specification.
Skewed image - See the Image Skew
Specification.
Skips - An area on the print where the
developed image is disturbed before or during
fusing. Depending on the type of smear, it
may look like a band or streak.
Smear - An area on the print were the
developed image is disturbed before or during
fusing. Depending on the type of smear, it
may look like a band or streak.
Solid Area Deletions - Deletions which occur
in a solid area.
Spot - An undesirable circular mark on the
print that differs in color or density from the
surrounding area.
Spot deletion - A circular shaped deletion.
The edges can be fuzzy or sharply defined.
Spot, white/light/colored - A spot that is
noticeable in an image area. See spot
deletions.
Spot, dark/colored - A spot that is noticeable
in a non-image area.
Streak - An undesirable strip on the print that
differs in color or density from the surrounding
area. The strip looks like it is comprised of
many small lines of varying length and width
giving the appearance of a brush stroke. See
lines, bands, streaks.
Trail Edge Defects -
Toner on the backside of the print.
Uneven
differences or variations from one area of the
print to another.
Wavy lines - Solid straight lines (typically in
the lead to trail edge direction) that are wavy
(or curvy).
Washed out image - an image that is too light
or lacks density. It can be the entire image or
a part of the image.
Wrinkles or creases - Creasing or folds on
the print in the lead to trail edge direction.
2/99
3-32
Darkened trail edges of solid areas (about
the last 4MM of the solid area).
Trail edge deletions (TED' s) - The last few
MM' s of solid areas are lighter in density.
See Deletions.
density - Undesirable
DocuPrint C55/C55mp/[NC60]
density