Xerox Phaser 3635MFP Service Manual page 100

Table 1 Image quality defects
Image quality
defect Description of defect
Part images Incomplete or missing images.
and missing
images
Print damage Creases, curl, cuts, folds, wrinkles, or embossed marks are
visible on the print.
Repeat images Refer to offsetting defects and residual image defects.
Residual A previous image that was not removed from the photorecep-
image tor during the cleaning cycle.
Skew A difference in angular alignment between image on the print
and the original document.
Skips Loss or stretching of the image, and compression of the
image, in bands across the process direction.
Smears Loss or stretching of the image, and compression of the
image, in bands across the process direction.
Smudges Darker images across the process direction.
Spots Dark spots in the non-image areas of the print.
Streaks Lines on the print, in the process direction of the non-image
area.
Stretched and The image on the paper is stretched or distorted.
distorted
images
Toner contami- Random black spots or marks
nation on the
back of prints
Uneven den- Variation in image density across the print. See also non uni-
sity formity.
Unfused prints The toner image on the finished print is not fused to the print
medium.
Image Quality
IQ1
Optimum
internal test
pattern Number Description
1 1 S600 pattern (A4), Figure 1.
1, 3, 4, 5, 6, 8 2 S600 pattern (8.5 x 11), Figure 1.
1, 5
3 Grey dusting pattern (8.5 x 11), Fig-
1, 5
ure 2.
4 Grey dusting pattern with border,
7
Figure 3.
5 Ghosting pattern (8.5 x 11), Figure 4. Ghost imaging, fuser offset, print damage.
1
6 Dark dusting (duplex), Figure 5.
1, 3 7 Skew test (11 duplex), Figure 6.
1 8 Character test pattern (duplex), Fig-
ure 7.
Make a blank
copy
9 S600 pattern (A4 duplex), Figure 1.
1, 7, 8
1
10 S600 pattern (8.5 x 11 duplex), Fig-
ure 1.
Make a blank
11 Grey dusting pattern (8.5 x 11
copy
duplex), Figure 2.
12 Grey dusting pattern with border (8.5
1
x 11 duplex), Figure 3.
13 Ghosting pattern (duplex), Figure 4. Ghost imaging, fuser offset.
6
14 Dark dusting (duplex), Figure 5.
15 Skew test (duplex), Figure 6.
16 Character test pattern (duplex), Fig-
ure 7.
17 S600 pattern (A4 duplex), Figure 1.
18 S600 pattern (8.5 x 11 duplex), Fig-
ure 1.
19 Grey dusting pattern (duplex), Figure
2.
3-4
Table 2 Internal test patterns
Purpose
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Print damage.
Print damage.
Fix, white lines, white spots.
Lead edge registration, side edge registra-
tion, skew, magnification.
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU), print damage.
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Skips, smears, print damage.
Print damage.
Fix, white lines, white spots.
Lead edge registration, side edge registra-
tion, skew, magnification.
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU), print damage.
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Light density uniformity, deletions, lines,
bands, streaks, smears, solid area reproduc-
ibility, motion quality (LSU).
Skips, smears, print damage.
Draft 4
Phaser 3635MFP