Black line at the bottom of copy

[Adrian52134]

Hello

When I try to make a copy, I always get a narrow line/streak at the bottom of every copy (not from top to down as it's usually the case if there needs to be some cleaning done).

I have no problems with scanning and no problems with printing. I realized that the scanner thinks that the document is longer than it's actually the case. I ripped some parts from the paper at the bottom and indead: the line was no longer a straight line but I could see the parts I just ripped out.

The problem only appears if the original document is placed in the ADF.

What I tried:

- Cleaned the ADF rollers and the 2 small glases
- Tried a reset (Unplug while on, remove cartrigdes, wait 60s, plug back up)
- Made sure the printer is plugged directly in the wall outlet (only an extender cable is used)
- Installed the new firmware (Tried HP FutureSmart 4 and 5)
- Ran the scanner calibration routine

Nothing works. Any suggestions?

[Adrian52134]

We bought a roller replacement kit and will try to fix the feeder. Any tips are still welcome.

[Adrian52134]

Another interesting point we just found out is that most of the time there is no line/streak if the documents are scanned and then the scan is printed (instead of copying the documents). I would have thought "copy" does exactly the same thing as "scan and print" combined.

So right now I are waiting for the roller replacement kit to ship and in the meantime we scan and print if we need to copy multiple pages.

[Repairatrooper]

Scanning and copying use slightly different algorithms and results often vary slightly. One thing to try would be to perform  the scanner calibration . On the control panel of the printer go to support tools>cleaning and calibrations, then select scanner calibration and follow the instructions.

[Adrian52134]

Thank you for your input. Interesting, that the algorithms differ.

Like I wrote in my first post, I already ran the calibration routine. I actually did it several times. Maintenance kit should arrive really soon and I will write an update here.

[Adrian52134]

I now installed the new Document Feeder. The last step says I should check the control panel and go to: Administration, Manage supplies, Reset Supplies, New Document Feeder Kit. Unfortunately, there does not exist an "Administration" button. Also in the web interface I cannot find the mentioned menu. I read that some printers automatically recognize changed hardware but there is still a line printed at the bottom on every page I copy.