Image Quality Defect Definitions - Xerox DocuPrint N2125 Service Manual

Image Quality Defect Definitions

The System Controller Test Print (Figure
eters. Each area of the test pattern is used for a print quality parameter. The areas and the
print quality parameters are listed in Image Quality Checkout.
Table 1 Image Quality Defect Definitions
Defect Definitions
LIGHT PRINTS: The overall image density is too light.
BLANK PRINTS: Prints with no visible image.
SPOTS: There are spots of toner on the page.
HORIZONTAL DELETIONS: There are areas of the image that are extremely
light or missing entirely. These areas run horizontally across the page in the
direction of scanning.
VERTICAL DELETIONS: There are areas of the image that are extremely
light or missing entirely. These areas run vertically along the page in the
direction of paper movement.
SPOT DELETIONS: Solid areas are marked with irregular white areas.
VERTICAL STREAKS: Extraneous dark lines/bands in the process direction.
HORIZONTAL STREAKS: Extraneous dark lines/bands in the direction of
scan.
RESIDUAL IMAGES: The image from a previous print, which was not
removed during the cleaning process, has been developed on the current
print.
BLACK PRINTS: The print is completely covered with toner and has no visi-
ble image.
BACKGROUND: Uniform toner contamination in non image areas. Refer to
the Background specification.
UNEVEN DENSITY: The text/line darkness and solid area density image var-
ies across the print.
SKEWED IMAGE: Angular displacement of the image from its intended posi-
tion on the print. Refer to the specification.
DAMAGED PRINTS: Creases, wrinkles, excessive curl, cuts, folds or
embossed marks.
REGISTRATION (lead edge to trail edge): Displacement of the image, in the
process direction, from its intended position on the print.
(inboard to outboard): Displacement of the image, in the direction of scan,
from its intended position on the print.
SKIPS / SMEARS: Skip-Loss or stretching of the image in bands across the
process direction.
Smear-The distortion of the image in bands across the process direction that
cause it to appear to be blurred or compressed.
UNFUSED IMAGE: Part of or all of the image is unfused. Refer to the specifi-
cation.
RESOLUTION: At 600 DPI, the two pixel lines and halftone patches cannot
be reproduced clearly on the print.
Image Quality Repair Analysis Procedures
Image Quality Defect Definitions
1) is used to evaluate each of the print quality param-
Go To:
IQ RAP 1
IQ RAP 2
IQ RAP 3
IQ RAP 4
IQ RAP 5
IQ RAP 6
IQ RAP 7
IQ RAP 8
IQ RAP 9
IQ RAP 10
IQ RAP 11
IQ RAP 12
IQ RAP 13
IQ RAP 14
IQ RAP 15
IQ RAP 16
IQ RAP 17
IQ RAP 18
02/2000
3-4
Initial Issue
DocuPrint N2125