line in printed documents

[stb_IT]

Good morning,
the printer recently purchased at the hp store (officejet pro 7740), started producing a black line on the left side of the sheets. There doesn't appear to be a software problem. The problem has persisted for a few days.

I don't think the problem is in the sheet format. I insert an image in which the same sheet has been printed with the same system. one of the two presents the line the other does not.

the printer is new, the cartridges inserted are those of hp setup. I have already cleaned several times.

Thanks for anyone who can give me a suggestion.

 

 

 

Best regards.

[Betty0610]

@stb_IT

Welcome to the HP Support Community.

Does this happen on copies too?

Let us know 🙂

Thanks!

[stb_IT]

I apologize for the delay and thank you for the support.
In fact, the problem doesn't seem to show up in photocopies...

I add that the problem does not appear in all prints but only in some. we fail to understand the pattern which seems random

[Betty0610]

Let's try to do a root uninstall and reinstall of the software:

Unplug any USB cable, if any, before doing this.

1.) In Windows, search for and open Programs and features

2.) Select your HP Printer

3.) Select Uninstall

4.) In Windows, search for and open Devices and printers

5.) In the Devices and Printers windows look for your HP printer. If you see it listed right-click on it and choose 'Delete' or 'Remove Device'

6.) Open up the run command with the "Windows key + R" key combo.

7.) Type printui.exe /s and click Ok. (Note: there is a space in between “printui.exe” and “/s”)

8.) Click on the "Drivers" tab

9.) Look for HP Printer driver. If you see it Click on it and click Remove at the bottom

10.) Select Ok

11.) Select Apply and Ok on the Print Server Properties windows

12.) Close Devices and Printers

13.) Open up the run command with the "Windows key + R" key combo

14.) Type c:/programdata and click Ok. Go to Hewlett Packard folder, remove any printer related folders & files.

15.) Restart the computer.

Once done, please download and install the software from here:

https://support.hp.com/in-en/drivers

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[stb_IT]

Thank you for your answer.
Your tip is the first to have some effect, even though I spoke to two different support agents a few weeks ago.
The "line problem" is solved, now no lines appear in A4 documents.
However, A3 documents now come out in black and white and with a very low print quality. It looks like a sort of "proof" in black and white, instead of the color document.
However, this indicates that your deduction that the problem is at a software level is correct.

How can I solve the new problem with the A3?

Thanks for what you can do.

[Betty0610]

I'm glad to hear that. To try the steps from here for the A3 print quality: https://support.hp.com/si-en/product/hp-officejet-pro-7740-wide-format-all-in-one-printer-series/768...

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[stb_IT]

Thanks for the reply.
None of the solutions described seem to work. However, I confirm that the problem seems to be on the software side.

In the PC that has performed the procedure you described in the previous post, the "problem of lines" on A4 sheets has disappeared, but now the A3s come out at very low quality and always in black and white, regardless of the settings.

In PCs where the procedure you described has not been performed, the problem of lines in A4 sheets persists, but the A3s come out correctly as always.

No problem in photocopying of any format.
No problems in scans.

Thanks for what you can do.

[Betty0610]

I would suggest you try the Windows built-in drivers. Follow the steps below:

•    Go to Control Panel - Devices and Printers - Click on "Add printer" and follow the on-screen instructions.

•    When the page prompts for the drivers, select "Windows update". The driver list will be updated.

•    Click HP, Hewlett Packard, or Hewlett-Packard in the Manufacturer pane, and then click the name of your printer in the Printers pane.

Refer to this document HP Printers - Installing and Using the Windows Built-in Print Driver for help.

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!

Have a great day!

[stb_IT]

it doesn't work unfortunately

is there a way to revert to a previous firmware on the printer?

What could be causing such a strange problem?

[Betty0610]

We'll have to perform a reset on the Printer for this. I have sent you a private message, for more details that cannot be shared in a public post.

Please do check your inbox on the communities page for the private message.

Let me know if this helps.

If the information I've provided was helpful, give us some reinforcement by clicking the Accepted Solution button, that'll help us and others see that we've got the answers!

Thanks!