HP Designjet T1120 SD User Manual

If you have to use such files, try to ensure that the EPS, PDF or grayscale images are already in the
same color space that you intend to use later on in Adobe InDesign or QuarkXPress. For instance, if
your final goal is to print the job in a press that follows the SWOP standard, convert the image into SWOP
when you create it.
Colors are fading
If you print on instant-dry photo paper, your prints will fade rapidly. If you plan to display the prints for
more than two weeks, you should laminate them to...

●You may have asked to rotate the page from portrait to landscape on a paper size that is not wide
enough.
●If necessary, reduce the size of the image or document in your software application, so it fits
between the margins.
There is another possible explanation for a clipped image. Some applications, such as Adobe
Photoshop, Adobe Illustrator and CorelDRAW, use an internal 16-bit coordinate system which means
that they cannot handle an image of more than 32,768 pixels. If you try to print an image...

To print the Image Diagnostics Print:
1.Use the same paper type that you were using when you detected a problem.
2.
Use the View loaded paper key 
 on the front panel to check that the selected paper type is the
same as the paper type loaded into the printer.
3.
At the printers front panel, select the Image Quality Maintenance menu icon 
, then Print
diagnostic image.
It takes about two minutes to print the Image Diagnostics Print.
The print is divided into two parts, both of which test printhead...

And here is an example of the same printhead in a bad state:
Corrective action
1.Clean any faulty printheads (see Clean the printheads on page 169). Then reprint the Image
Diagnostics Print to see whether the problem has been solved.
2.If the problem remains, clean the printheads again, and reprint the Image Diagnostics Print to see
whether the problem has been solved.
3.If the problem remains, consider cleaning your printheads manually (see 
Clean the printheads
on page 169). You could also try...

If you still have a problem
If you still experience print-quality problems after applying the advice in this chapter, here are some
further things that you can do:
●Try using a higher print-quality option. See 
Printing on page 55.
●Check the driver you are using to print with. If it is a non-HP driver, consult the driver vendor about
the problem. You could also try using the correct HP driver, if feasible. The latest HP drivers can
be downloaded from 
http://www.hp.com/go/T1120/drivers.
●If you are...

16 Troubleshooting ink cartridge and
printhead issues
●Cannot insert an ink cartridge
●
Ink cartridge status messages
●
Cannot insert a printhead
●
The front-panel display recommends reseating or replacing a printhead
●
Clean the printheads
●
Clean the printhead drop detector
●
Align the printheads
●
Printhead status messages
ENWW167
Ink system issues
 

Cannot insert an ink cartridge
1.Check that you have the correct type of cartridge (model number).
2.Check that the colored label on the cartridge is the same color as the label on the slot.
3.Check that the cartridge is correctly oriented, with the letter or letters marking the cartridge label
right-side up and readable.
CAUTION:Never clean inside the ink cartridge slots.
Ink cartridge status messages
These are the possible ink cartridge status messages:
●OK: the cartridge is working normally, with no...

The front-panel display recommends reseating or
replacing a printhead
1.From the front panel, turn the power off then on.
2.Check the front-panel display message, if it shows the ready message, the printer is ready to print.
If the problem remains continue with the next step.
3.Remove the printhead, see 
Remove a printhead on page 118.
4.Clean the electrical connections on the backside of the printhead with a lint free cloth. You can
carefully use a mild rubbing alcohol if moisture is needed to remove...

When the front panel displays a warning message that the clean process is needed, you are
recommended to clean the printhead drop detector. If you do not clean the printhead drop detector
immediately, the printer continues working normally, however, the front panel display continues to show
the warning.
CAUTION:Wear gloves to avoid getting ink on your hands.
1.Turn off the printer at the front panel.
2.To avoid an electric shock, switch the printer off and unplug it.
3.Open the window.
170 Chapter 16...

4.Find the printhead drop detector beside the stored printhead carriage.
5.Remove any debris blocking the printhead drop detector.
6.With a dry lint free cloth, wipe the surface of the drop detector to remove any non-visible debris.
7.Close the window.
ENWW Clean the printhead drop detector 171
Ink system issues