7800 Banding....Help!



Have not seen a similar topic in the posts.
Long time ConeColor customer…very pleased.
Recently, I’ve moved studios and after the move (probably due to sub-freezing temps in the moving truck) the magenta damper blew-up so I replaced the right four (K,C,M&Y).
Was get banding problems so I bought a gallon of PiezoFlush and carts. After several cleans and letting it set overnight, the auto patterns were perfect so I replaced the inks and the crappy patterns returned. So, I replaced the other 4 dampers and this has no effect.
Doing the pattern from the utility, the last two inks: LLK and LM are just terrible and I cannot clear them no matter how many times tried. Fair regular (now) about shaking the inks.
Completely lost and frustrated. Any ideas?

Trying to upload the pattern but the system won’t let me do it for the moment. The lines for the LLK and LM are mostly non-existent at the bottom of the pattern. Will try to upload again later.


Did you have a perfect nozzle check with the Piezoflush installed AFTER replacing ALL the dampers?

If the ink was frozen on transport, there is a possibility that is congealed in the lines, damper and/or head channels and caused the bad nozzle check. An additional Flush of your entire system AFTER you replaced the dampers is a good idea. Then verify a good Nozzle check & install fresh ink that was not subject to freezing in transport


Hi kcthayer~

Please follow these instructions for attaching images to this forum: http://www.inkjetmall.com/tech/content.php?152-How-to-attach-images-to-this-forum

After reviewing your order history, I see you bought the refill carts and bottled ink individually, starting back in 2008. Is this the same printer and carts that you’ve been using since then?
Have you manually cleaned the printer’s capping station, wiper blade, flushing box and/or bottom of the print head? If not, I recommend cleaning your printer, following our instructions, here: http://www.inkjetmall.com/tech/content.php?133-Printer-Cleaning-and-Preventative-Maintenance

Please let me know so I can try to help you get back to happily printing.
Best regards~ Dana


Hey Dana-
Really appreciate all your support over the years. Tried again to upload the image but still getting a 403 error so uploaded to my website instead.
Yes, this is the same printer. I have cleaned the capping station and wiper blade but will redo the cleaning per your procedure and update.


Hey Kelly-
Timeline of events as I remember in my advanced years:

  1. M damper blew up after move
  2. Replaced the 4 right dampers (KCMY)
  3. Noticed banding but after several cleanings without results (and after trying the Windex fix), purchased a gallon on Piezoflush and the carts
  4. After several cleanings, got a perfect auto pattern
  5. Replaced ink carts
  6. Still had banding so ordered and replaced the left side dampers (LLK,LM,LC,LK)
  7. Still had banding so cleaned capping station and wiper
  8. Still had banding. Noticed that the LK ink barely moved in volume so put a new rubber washer on the cart
  9. Present


Have you tired to clean the bottom of the print head with the Piezoflush on a paper towel? You can find important/useful cleaning tips here http://www.inkjetmall.com/tech/content.php?133-Printer-Cleaning-and-Preventative-Maintenance


Please post a scan (300ppi min, so we can see detail) of your printed [U]manual[/U] nozzle check. We have a helpful article about evaluating your printed nozzle check, here: http://www.inkjetmall.com/tech/content.php?167-Evaluate-a-Manual-Nozzle-Check-to-Determine-the-Health-of-Your-Printer


Still can’t upload images so from my site again
kct001 was taking after the cleaning of the lower head, cap and wiper. kct002 after the cleaning then a cleaning cycle and kct003 after a second cleaning cycle. Sorry about the LLK being washed out in the scans but notice the different patterns in the LM. It’s the same in the LLK. Not better, the patterns move around but the bottom is worse. Ideas?


I will supply a better nozzle check this weekend


Much larger and detailed scan


After re-cleaning the wiper and caps with PiezoFlush, I got an almost perfect nozzle check except the entire magenta block was missing. Did a head cleaning and everything went back to the crappy pattern you see above. Re-cleaned wiper and caps…again, great but not perfect nozzle check, another head clean and back to square one. Focused on the wiper, another descent nozzle check, another head cleaning, another crappy nozzle check. Do you think I need to replace some parts?


I have attached your latest nozzle check for you below.

Based on your reports and nozzle checks, I would flush the print head using our PiezoFlush print head cleaning kit (you’ll need to disconnect the dampers, and flush the print head channels directly), since you have already replaced the LK, LC, LM and LLK dampers, and those positions look the worst (especially the last three). I would also replace the wiper blade and flushing box, which you can get from Compassmicro.com
If you continue having problems after cleaning the head and replacing the wiper and flushing box, then I would consider replacing the pump cap assembly.

Best~ Dana


Replaced the wiper and flushing box and that solved the problem. Thank you so much…the old printer is running perfectly again!


Fantastic, thanks for the update- I’m glad to hear your printer is working well again :slight_smile:

Happy printing~ Dana