DYMO Labelwriter 400 prints very slowly and incomplete

See if it still happens using a fresh label roll. From the Dymo 450 User Guide the common causes of poor print quality issues.

Poor print quality is most frequently caused by one of the following:
• An old roll of labels
• Labels made by a manufacturer other than DYMO
• Labels where the thermal coating has been compromised
• A dirty print head
First, make sure you are using DYMO-branded labels. Do not use third-party labels because the thermal coating on other labels has a different sensitivity than DYMO-branded labels. Also, the perforated holes between the labels made by other manufacturers are frequently not detectable by LabelWriter printers.
If the print quality becomes faint, small dots of white appear scattered through the printed characters, or light and dark patches of printing appear, you are probably using a faulty roll of labels. Try using a different roll from a fresh box. If the second roll prints correctly, the problem is with the first roll of labels.
Another possibility is that the LabelWriter print head needs cleaning. Every LabelWriter printer comes with a cleaning card. See "Caring for Your Printer" on page 17 for information about the
LabelWriter cleaning card.

Hi Kaylene, i`ve experience that before.. Just set the print set-up/ preview into horizontal.. The dialog box of print preview will show you the position of your text before printing Dymo Label! goodluck!!

there some non connected missed cable, check all again. if any wire loosed, is better dont open again send to repair. probably you can do more damage,than repair. it very sensitive to static it can be burned very easy.

https://dymo.custhelp.com/app/answers/detail/a_id/1343/~/failed-to-convert-devmode-to-print-ticket-error-when-printing-from-dymo-label

uninstall and get new software from Dymo site.

OK! The first time you tried to print ON THE LEFT SIDE, without anymore labels there, there was a "pending" error message in the print queue. This typically cuts off all furtther printing, as all subsequent requests are "behind" it in order or priority.

To fix this, open the Dymo Labelwriter "Printer" dialog box (double-click it on the tray or go to "start / control panel / printer and faxes" - then double-click on "DYMO LabelWriter Twin Turbo". Once open, you'll see a list of "failed" print requests. Somewhere in there you'll find the one with the "laserwriter output" out of paper message. Select that and cancel or delete it.

If this was the problem, all your attempts will now print (make sure you have enough postage paper in, and you'll have extras you can use, I'm sure!

Hope this helps.

It could be how you have loaded the labels. If you have loaded the labels and there is a small gap between the spindle and the roll, it will print one label and give a error-printer message and stop working until you unplug it for 30 seconds and plug it back in. I would reload the labels from scratch and ensure there is no gap.

Did you change the number of copies to print prior to printing?

its ****.