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Repair Analysis Procedures (RAPs)
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Xerox DocuPrint N17 Service Manual
7.5.2 Image Quality Defect Definitions
Table 7.5.2.1 Image Quality Defect Definitions
Defect Definitions
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NON-UNIFORM IMAGE QUALITY: The line darkness and solid area density image varies across the
print.
BLACK PRINTS: The print is completely covered with toner and has no visible image.
HORIZONTAL DELETIONS: There are areas of the image that are extremely light or missing entirely.
These missing areas form wide bands that 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
missing areas form wide bands that run vertically along the page in the direction of paper movement.
SPOT DELETIONS: Solid areas are marked with irregular white areas.
LIGHT PRINTS: Refer to the Solid Area Density specification.
BLANK PRINTS: Prints with no visible image
.
EXTRANEOUS MARKS: Horizontal or vertical bands, or other marks that are print defects caused by bad
or incorrect font data, print drivers, electrical noise or other causes not directly related to the
electrophotographic process.
CHARACTER DEFECTS: Garbled print, missing, repeating, or scrambled characters are problems
relating to font data or character generation. These are print defects not related to the electrophotographic
process.
SPOTS: There are spots of toner on the page.
UNFUSED IMAGE: Part of or all of the image is unfused. Refer to the specification.
MISREGISTERED IMAGE (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, across the process direction, from its intended position
on the print.
STREAKS: Extraneous dark lines/bands in or across the process direction. These are Print Engine defects
not related to the System Controller or Host Data.
RESIDUAL IMAGES: The image from a previous print, which was not removed during the cleaning
process, has been developed on the current print.
BACKGROUND: Uniform toner contamination in non image areas. Refer to the Background specification.
DAMAGED PRINTS: Creases, wrinkles, excessive curl, cuts, folds or embossed marks.
XIE SMOOTHING: Near-vertical and near-horizontal lines are jaggy.
RESOLUTION: At 300 DPI two pixel lines and halftone patches cannot be reproduced clearly on the print.
SKEWED IMAGE: Angular displacement of the image from its intended position on the print. Refer to the
specification.
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.
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