Uneven Density On A Bk Solid Image Due To The Uneven Resistance Of Itb - Canon imagePRESS C10000VPSeries Troubleshooting Manual

Uneven density on a Bk solid image due to the uneven resistance
of ITB
[Symptom]
Uneven density [a] may occur on the 2nd side of 2-sided page when a Bk high density image is output.
The arrow [b] indicates the feed direction.
[Cause]
When the resistance of ITB gets greater precipitously, the primary transfer voltage of Bk will get lower than the supposed voltage.
The above-mentioned symptom occurs when the secondary transfer voltage gets higher than the primary transfer voltage locally
due to the uneven resistance of ITB.
The symptom is easy to check on the Bk high density image of the 2nd side.
[Service work]
1) Have the customer log in from System Management Mode in user mode.
2) Go to Select Settings/Registration > Paper Settings > Paper Type Management Settings, select an appropriate paper type
from among the list, press "Duplicate" button and then "OK" button.
3) Enter any name as the duplicated paper type and press "OK" button.
4) Select the paper type duplicated in the step 3) and press "Details/Edit".
5) Select "Adj. Secondary Transfer Volt." and press "Change".
[Note] In case Adj. Secondary Transfer Volt. will not be displayed on the control panel, change the setting value of Service Mode
> Mode List > COPIER > Option > DSPLY-SW > IMGC-ADJ to "1" and perform a power-cycle of main power (off/on). The value
is "0" by default.
6) Select "back side" in Adjust Secondary Transfer Voltage to change the correction value [a] in increments of "-5" by clicking [-]
button until the symptom does not occur.
When the symptom is over-improved, adjust the correction value by clicking [+] button.
The range of setting is from "-20" to "+20" ("0" by default). Changing this value changes the secondary transfer voltage.
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