Canon imagePRESS C7000VP Series, Trouble Shooting Information

Page: 117 / 137

Trouble Shooting Information for C7000VP series
Page 117
Rev. 2.0
2010/09/17
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Changing the Tail End White Patch Correction of a Custom Paper Type
1. Press [Change] next to <Tail End White Patch Correct>.
2. Press [Front Side] or [Back Side] > press [-] or [+] under <Correction Level> or <Correction
Amount> to adjust the correction level and correction amount > press [OK].
When paper with curls or paper that tends to curl is used for 2-Sided copying, toner may not be
applied on the tail end of the paper and the area where toner is not applied may remain white.
This feature may ease these symptoms.
[Correction Level]: Press [-] to adjust the value if high-density images on the tail end of the
paper are faint. Press [+] to adjust the value if white patches appear on the tail end of the paper.
[Correction Amount]: Depending on the paper type and paper curl, the size of the area on the
tail end of the paper where white patches appear may differ. You can use this feature to adjust
the starting position to correct the area.
The default position of the Tail End White Patch Correction mode starts at 20 mm from the edge
of the paper. You can shift the starting position by pressing [-] or [+]. To expand the area (21 mm
or more), press [-]. To narrow down the area (19 mm or less), press [+].
For example, if the image begins to blur at around 22 mm from the edge of the paper, you can
improve the condition by expanding the correction area to 23 mm. In this case, enter [-3].
Note:
If adjusting the value in both [-] and [+] directions does not eliminate the white patches, you can
try to decrease the Secondary Transfer Voltage. However, note that decreasing the Secondary
Transfer Voltage may affect the images. It is recommended that you check the output result
while adjusting the Secondary Transfer Voltage.