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Troubleshooting > Troubleshooting items > Image Faults > 35-mm pitch ghost due to toner deterioration
Troubleshooting > Troubleshooting items > Image Faults > 35-mm pitch ghost due to toner deterioration
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In Case that Paper Setting for the Poor Image is "Plain Paper"
1) Target current setting of discharge current control
(COPIER > ADJUST > HV-PRI > DIS-TGM/TGC/TGK) <Level 2>
Description modified: Set the setting value of the corresponding service mode to "+2", and
turn OFF and then ON the main power. If not improved, the setting value is increased by
every [ +2 ].
2) Adjustment of electrostatic charge AC current
(COPIER > ADJUST > HV-PRI > DIS-TGM2/TGC2/TGK2) <Level 2 >
Description modified: Set the setting value of the corresponding service mode to "+2", and
turn OFF and then ON the main power. The setting value is set to +4, If not improved.
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In Case that Paper Setting for the Poor Image is "Heavy Paper"
1) Target current setting of discharge current control (COPIER > ADJUST > HV-PRI > DIS-
TGM2/TGC2/TGK2) <Level2>
The setting value of the applicable service mode is set to "+2." If not improved, the setting
value is set to +4.
2) Adjustment of electrostatic charge AC current (COPIER > ADJUST > HV-PRI >
OFSTACM2/OFSTACC2/OFSTACK2) <Level1>
The setting value of the applicable service mode is set to "+2." The setting value is set to
+4, If not improved.
[Notes about remedy]
A drum life will be influenced if the 2nd service mode (adjustment of electrostatic charge AC
current) is changed.
For this reason, please do not set the setting value to +4 or more at the maximum.
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35-mm pitch ghost due to toner deterioration
[Occurrence area]
Developing cylinder
[Cause]
In case that the image pattern, which has extreme shading differences, is copied under the
high temperature and high humidity environment, the deterioration toner of a previous image
may adhere on a developing cylinder. For this reason, the inversion residual image (negative
ghost) of the previous image may occur in the next image.
[Occurrence condition]
In case that the image pattern with extreme shading differences is copied (the halftone image
was copied immediately after the solid image)
[Remedy]
1) Targeted value setting of ATR control (COPIER > ADJUST > DENS > P-TG-Y/M/C/K)
<Level2>
The applicable service mode setting value for the color, which the poor image has occurred,
is set to "-1."
2) After cycling the power of the main unit, copy 8 A3 solid images.
As a result, if the image on the 8th sheet is checked and a defect is not improved, please
move on to the following step.
3) Lower the setting value of the applicable service mode by 1 step.
4) After cycling the power of the main unit, copy 8 A3 solid images.
5) Check the image on the 8th sheet.
6) If a poor image is not improved, repeat Step 3)-5).
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