IBM InfoColor 3170, User Manual

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Artifact Samples
21
Artifact Samples
There are a number of common artifacts that can be corrected by optimizing parameters. See the
section “Description of paper-dependent parameters” on page 31 for additional information on
machine/paper parameters.
The following artifact samples (and the suggested actions) should not used until the following items
have been addressed.
1. Has periodic maintenance/cleaning been performed?
2. Has the new medium been acclimated (at least 48 hours)?
3. Is current print quality, on a known paper, good?
If you answered No, to any of the above questions Do Not procede until the machine is clean, func-
tioning properly and the new medium has been acclimated.
Note: This book is being distributed in both hard copy and online versions. If you are using the online
version to print a copy, be aware that your choice of paper and the print quality of the printer
that you use to print it on can affect the appearance of the artifact samples. Use a known
paper, that has excellent print quality characteristics on a printer that does not have any print
quality problems.
Artifact Page No.
Low-density cloudiness 22
High-density cloudiness 22
High-frequency cloudiness 23
Periodic low-density bands 23
Weak cloudiness 24
Low-density speckles 24
Low-density spots 25
Gloss too low 25
GEM hot offset 26
Worm like streaks 26
Wrinkling in the PRS 27
Non-uniform transfer quality across the web 28
Micro-blistering from the fuser 29