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Model:
Taurus-C1a/C1b (D074/D075)
5. Tiger Stripes
Excerpt from RTB #RD074114
Background
If the machine is used in a way that disables optimum
refreshing of the developer mixture, for example,
continuous operation of low image coverage jobs or low
P/J, fluidity of the mixture in the development unit
degrades. This causes the amount of mixture to
decrease at the front (operator) side of the development
roller (because the auger rotates to convey the mixture
from rear to front), resulting in the "Tiger Stripes.
Action
When encountering "Tiger Stripes", take the following actions:
1. Are there any PM parts that have already reached life?
Yes: Replace the part(s) to complete the procedure. If the problem persists, do the
next step.
No:
Do the next step.
2. Print out 40 sheets of solid image on A3/DLT in duplex to exhaust old developer mixture
from the development unit. Then, do SP3-011-002 or [0201: Adjust Image Density] in
the [Adjustment Settings for Skilled Operators] menu.
3. Print the job confirmed of the Tiger Stripes. Is the problem resolved?
Yes: Do step 4.
No:
Do step 5.
4. Since the effect expected from exhausting the developer mixture is temporal, set the
value in SP3-820-022 to "100" (default: 0) to prevent problem reoccurrence. With this
setting, the system will refresh toner at the end of every job.
IMPORTANT
Increasing the value in SP3-820-022 will reduce the toner yield.
To confirm the effect, monitor the machine for a while.
5. If the problem does not resolve even after doing the above procedure, replace the
developer.
echnical
T
(described as "Wavy unevenness" in the field service manual)
ulletin
B
Date:
20-Mar-14
PAGE: 16/25
No.:
RD074118
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