imagePROGRAF PRO-1000- Horizontal lines/bands on black backgrounds

[nawan]

Hi,

I have 2 Canon Pro 1000 with the same problem of lines/bands on black backgrounds.

The problem appeared recently, i can not solve it.

It seems that it only happens with black backgrounds.

I read all the topics i could find about it.

I am using a 230gsm matte paper and i am printing with Canon Professional Print & Layout 1.5.0 with the latest printer drivers. 

The selected paper on the printer and in the application is : Heavy Art Paper

My printers are connected by RJ45 cables, and my computer too.

Here are the things i already tried:

- Clean, Deep Clean, System Clean the Print Head

- Clean the bottom plate

- Clean the rollers

- Print in High Quality

- Upgrade the printers firmware to the latest 4.0.0.0 version

- Reset all the settings of the printers

- Try to activate the Avoid Abrasion setting

But i am still getting the same problem.

Please help 🙂

Thanks

[nawan]

For those having a similar problem:

- unidirectional printing option make the print better but do not solve the problem completely

- i also tried to update all the media configuration files with Canon media configuration tool

As a result, the lines are less visible, but still present

[nawan]

I made a manual cleaning of the print head, taking out of the printer, and cleaning it in a hot bath of distilled water and cleaning solution during 3h.

For now it seems that it solved the problem