Xerox 470 - Manual (Page 305)

Xerox Document Centre Reference Guide Page 15 - 13
15. Pro
b
lem
Solvi
n
g
Copy
Quality
(cont’d)
Moiré - a wavy pattern
defect created by the
interaction of the halftone
frequency on the original
and the halftone frequency
used to produce the copy l Use a reduced Sharpness setting.
l If Auto is selected, use Special or if Special
is selected, use Auto.
l Use Halftone Photo original type with
Special or Auto screen.
Grainy or “noisy” pictures l Use Special Screen.
l Select Photo and select less sharpness.
Fuzzy text or lines l Select Text, Halftone Photo, or Normal type
of original.
l Increase Sharpness and/or Contrast.
Low density images such
as pencil marks are not
copied l If Background Suppression is On, Darken
the copy.
l If Background Suppression is Off, turn on
Background Suppression.
Low density images such
as paste-up marks are
copied l If Background Suppression is On, Lighten
the copy.
l If Background Suppression is Off, turn on
Background Suppression.
Images on the back side of
the original print out on the
front l If Background Suppression is On, lighten
the copy.
l If Background Suppression is Off, turn on
Background Suppression.
l If copying from the Document Glass, keep
the Document Glass Cover raised.
Lines appear on the copies
when the Document
Feeder is used l Thoroughly clean the glass under the
Document Feeder. Refer to the
Maintenance section for additional
information about cleaning the Document
Glass.
Skewed images or sheets
in the output tray l Check area 2 jam clearance handle and
ensure that it is securely latched.
Problem Symptom Recommendation