The imaging drum inside the machine can get contaminated with glue spots. Glue spots on the drum can affect the print quality. Possible causes of the glue spots:
The use of recycled media, or
Wrapper glue residues on one or more sheets of paper.
The machine contains a sensor that can detect glue spots. When the [Automatic drum cleaning] setting is enabled, and spots are detected, an automatic drum cleaning procedure will take place.
NOTE
When automatic drum cleaning is enabled, the cleaning will not take place before the first detection of glue spots. If you want to clean the drum immediately, you must start the manual drum cleaning procedure via the control panel ([System] -> [Maintenance] -> [Go to maintenance tasks] -> [Clean the drum] -> [Start] ).
Some contamination of the drum cannot be excluded completely, but you can take precautions to limit the possibility of contamination.
Advice:
Open the wrapper very carefully, using a knife or scissors.
Remove the top and bottom sheets of the paper package before you load the paper into a paper tray.
Use paper from a box.
The control panel contains the following settings with regard to automatic drum cleaning.
|
Setting |
Description |
|---|---|
|
[Automatic drum cleaning] |
Here you can enable or disable the automatic drum cleaning function. When the setting is disabled, the drum is not cleaned automatically. The settings described below in this table are grayed out on the control panel. If the setting is enabled, the sensor will frequently check the drum for glue spots ([Glue detection interval] ). If necessary, the automatic drum cleaning procedure is performed. The three settings described below in this table are active. Possible values:
Factory default value: [Off]. NOTE
The drum cleaning can take a couple of minutes. The control panel provides feedback. |
|
[Glue detection interval] |
You can indicate the interval, in number of sides, after which the drum sensor checks the drum for glue spots. A lower value means that the sensor checks the drum more often. The frequency of the occurrence of glue spots depends highly on the media used. Possible values:
Factory default value: [350 sides]. NOTE
A side is not necessarily equal to a sheet. A side is based on an image on A4/LTR-like media. An image is anything that is printed on one side of A4/LTR-like media. Below, you can find an example of the conversion for the [20 sides] value. At lower intervals, the productivity can decrease.
So when you print A3/Tabloid two-sided, for example, the sensor checks the drum after every 5 sheets printed. |
|
[Glue detection sensitivity] |
You can indicate the size of glue spots that the sensor detects. The factory default value makes sure that only fairly large spots will be detected. Only select a higher value when smaller glue spots must be detected. Possible values:
Factory default value: [Normal]. |
|
[Resume automatically after cleaning] |
You can indicate the behavior of the printer after an automatic drum cleaning took place. Select [Yes] if you want to continue printing immediately, without checking the output first. Select [No] if you first want to check the prints that were made before the drum cleaning. When the drum cleaning is ready, the control panel displays a message that asks you if you want to continue. Now you can check the output. Possible values:
Factory default value: [No]. |
|
[Start of run detection] |
You can indicate if the system checks for glue pollution before the start of a run. Select [On] if you want the system to check for glue pollution before the start of a run. Possible values:
Factory default value: [Off]. NOTE
It is advised that you enable [Start of run detection] only when you often use recycled media. |
|
Setting |
Normal user |
User that demands high quality |
||
|---|---|---|---|---|
|
Plain paper |
Frequent use of recycled media |
Plain paper |
Frequent use of recycled media |
|
|
[Automatic drum cleaning] |
[On] |
[On] |
[On] |
[On] |
|
[Glue detection interval] |
[350 sides] |
[350 sides] |
[100 sides] |
[100 sides] |
|
[Glue detection sensitivity] |
[Normal] |
[Normal] |
[Very high] |
[Very high] |
|
[Resume automatically after cleaning] |
[Yes] |
[Yes] |
[Yes] |
[Yes] |
|
[Start of run detection] |
[Off] |
[On] |
[Off] |
[On] |