Xerox 5400N - Phaser B/W Laser Printer, Service Quick Reference Manual

Page: 206 / 503

Phaser 5400 Laser Printer Service Guide 177
Image-Quality Defect Definitions
The System Controller Test Print is used to evaluate each of the print-quality
parameters. 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 100 Image-Quality Defect Definitions
Defect Definitions Go To: Page
LIGHT PRINTS: The overall image density is too light. Light
(Undertoned)
Prints page 178
BLANK PRINTS: Prints with no visible image. Blank Prints page 181
SPOTS: There are spots of toner on the page. Spots page 183
HORIZONTAL DELETIONS: There are areas of the image that
are extremely light or missing entirely. These areas run
horizontally across the in the direction of scanning. Horizontal
(Scan)
Deletions page 185
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. Vertical
(Process)
Deletions page 188
SPOT DELETIONS: Solid areas are marked with irregular white
areas. Spot
Deletions page 190
VERTICAL STREAKS: Extraneous dark lines/bands in the
process direction. Vertical
(Process)
Streaks page 192
HORIZONTAL STREAKS: Extraneous dark lines/bands in the
direction of scan. Horizontal
(Scan)
Streaks page 194
RESIDUAL IMAGES: The image from a previous print, which
was not removed during the cleaning process, has been
developed on the current print. Residual
Image page 197
BLACK PRINTS: The print is completely covered with toner and
has no visible image. Black Prints page 199
BACKGROUND: Uniform toner contamination in non image
areas. Refer to the Background specification. Background page 200
UNEVEN DENSITY: The text/line darkness and solid area
density image varies across the print. Uneven
Density page 202
SKEWED IMAGE: Angular displacement of the image from its
intended position on the print. Refer to the specification. Skewed
Image page 204
DAMAGED PRINTS: Creases, wrinkles, excessive curl, cuts,
folds or embossed marks. Damaged
Print page 210
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. Registration page 212
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. Skips /
Smears page 214
UNFUSED IMAGE: Part of or all of the image is unfused. Refer to
the specification. Unfused
Image page 215
RESOLUTION: At 600 dpi, the two-pixel lines and halftone
patches cannot be reproduced clearly on the print. Resolution page 217