Question about Zebra QL 320 Thermal Printer

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Hi.. we have a ql320 printer that we using for labels. We using gap sense and the feed stops at the right place. However, when ever we print labels, we get a blank label printing after every label print. Is there something that we can do to sort out this issue? Your assistance will be greatly appreciated.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 45 Answers

SOURCE: extra feed

The label sensors might not be getting a strong signal as the labels pass between them.
Make sure the labels are loaded all the way to the left (as viewed fron the front) and make sure the label guide (near the back of the printer) is set to keep the labels from wandering away from the sensor.

There is a pair of infrared emiter and detector located above and below the label path. As label pass between, these measure the leading and trailing edges of each label.

If you haven't already done so, calibrate the printer, by using the "Online", "Calibrate", "Online" buttons. Hit the "Feed" button a few times to see if the labels feed consistantly. It might take to "Feeds" to get each out, if they stop at both the start of the printhead and again at the tear bar. Adjusting the labels and calibrating fixes most problems. If the "Feed" button still doesn't feed just one label and the printer still skips labels, you'll need to adjust the label gap sensors. This can be a bit tricky if your labels are very narrow.

There should be a small pcb on a shaft under the label path. Note its current location, then slide it left or right to get a better signal, and try the feed button again. On my Zebras, the sensor is not in the middle of the PCB. Look for a small metal "can" on the PCB and center that.

The upper sensor is more difficult to adjust, but if you manage to spot a very small PCB above the labels, it will be easier to line these up.

Posted on Sep 18, 2008

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SOURCE: TLP 2844 skips 15-16 labels then prints intended label

It sounds like they may need to set their "Q" values for the labels they are using.   If that isn't it, we may need more info - are they using Zebra brand or custom labels?  
To start with, I would ask them to try adding these "Q" value commands: q456 Q152,24
If that doesn't work, then maybe they can provide the other info mentioned above so we can understand the problem better.

Posted on Jan 05, 2009

  • 32 Answers

SOURCE: the Zebra 2443 printer is feeding out 13 to 14

It sounds like the printer is not calibrated. This procedure is in the users guide. Make sure both labels and ribbon are loaded correctly and then perform this procedure. If you do not have the manual or still have issues, email me at hilster1968@gmail.com for the procedure.

Posted on Oct 27, 2009

  • 4340 Answers

SOURCE: the printer will print one

This sounds like a size issue, meaning that your label has too many lines and that kicks to the "next page".

Look for too many line items on first label.

Posted on Oct 06, 2010

SOURCE: How can we change from black bar sensor printing

First you need to send below file to the printer via Vista Label
Printer >> 1 Send File
Save this file as gapsen.txt:
! DF CONFIG.SYS
! UTILITIES
GAP-SENSE
PRINT

To save this as default setting, send below script (save as setting.txt)
^XA ^JUS ^XZ

Posted on Dec 23, 2010

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