Designjet Z9 small horizental lines on very thick paper

[serge_dugal]

Hi. I am troubleshooting a Designjet Z9. Small horizontals lines on the printing. The use a very thick paper (more like cardboard), weight: 290 gr.

The customer was printing for 2 years with this kind of paper and never had any problem. They have this problem since a paper got jam when it cut the paper. I have clean under the carriage, the sides of the printheads, check the starwheel ruler, check the paper path. Everything look good, but still have this issue.

Any idea someone?

[serge_dugal]

It look like the starwheel might be bend, but i am not sure.

[serge_dugal]

Anyone have an idea about the cause of the problem?

[serge_dugal]

Hi. My customer is able to print on the same type of paper, on a Canon plotter. Can the paper on a paper jam fold the starwheel?

[Ouccema]

Hi,

Are you using the correct paper profile when loading roll? if yes I suggest contacting our Support to get an advanced troubleshoot and resolution.

[serge_dugal]

Hi. Thanks for the reply. For this time, my customer have put an hold on it. We have tried different paper settings, but the issue still remain. I will contact HP if the customer want to continue with the repair of the plotter. Thanks.

[serge_dugal]

I mention "Fold the starwheel" but the word i should have use is "bend the starwheel bar". They use a very thick paper and the issue happen after the paper jam with this very thick paper.