Question about HP Designjet Z6100 InkJet Printer

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Black ink banding

I have a Designjet Z6100 I have replaced the tube system and the primer assembly and the black ink is still banding? it will print black solid for a few feet and then begin banding the black ink only

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Banding in one ink only after several feet of print then the ink runs 'dry' in the printhead,
firstly diagnose the problem corrrectly before spending any more money on Tubes or otherwise,
question: what can cause the ink to 'run out'
1: no ink in cartridge
2: tubes have a blockage
3: tubes have an air leak
3:Carriage assembly has damaged 'finger' contacts
4: APS faillure
5:Tubes failure
6: printhead failure
7:service station blocked up no longer able to correctly maintain printheads
all of the above need investigating before any more money is spent.

I would firstly Thoroughly check the tubes system for air leaks especially around the joins ( cracks can appear in the tube side walls allowing air to enter the ink system) at the back of where the ink carts sit ( Left hand end cover removed)
then I would move to the carriage and chek the tube ends and Valve stems ( where the printheads meets the tubes ) for excessive movement.
if this passes I would then have the machine perform an APS error check/ pressure leak detect,
this may show failure points on the ink cartridge's Which should then be changed and Diagnostic restarted until a pass has been achieved.

then move onto the finger contacts check for obvious cracks in the ribbon cabling, replace as required.
if when all the above is completed there is still an issue then I would be forced to strip and recondition the aerosol unit under the service station ensuring all ink ports are clear of all waste and that the maintenance cartridge is in good order ( not overflowing)

please note- ONCE a PRINTHEAD is empty of INK it can NO LONGER be used. it CANNOT be recovered, attempts to recover the printhead will only cause more issues compounding the fault. An Error I have made once and will NOT make again, I tell you now so that hopefully you wont waste your time doing the same.

Posted on Mar 19, 2014

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Posted on Jan 02, 2017

SOURCE: quit printing black

did anyone ever solve this issue? We have the same printer and can't get the Dam thing to just acknowledge black ink only.. When any of the color cartridges are low the stupid printer won't allow us to proceed printing in black until we replace the cartridge that is low..$#@**&^*$#

Posted on May 04, 2008

  • 96 Answers

SOURCE: Light and dark banding on HP Designjet Z6100

this could be several issues. clean your encoder strip, clean the contacts on your printheads and carriage assembly. check that you are using the correct media profile. let me know if this helps.


Posted on Sep 24, 2009

  • 2 Answers

SOURCE: HP Designjet z6100 printing wrong

I had the same problem maybe this will help
Problems also may occured when you rotate your file in "Printhouse"
You should make the rotation before you rip your file.

(1) "HP z6100 Banding / Print Lock Up / Length Issues"

Customers using HP DesignJet z6100 with firmware version 6 and the ONYX v 7.1 HP Driver may experience banding, printer locking, and printing length issues.

The problem is caused by the varware data written to the HP z6100 hard drive.

If you experience any of the issues listed above, please contact HP Tech Support. They may need to do a Disk Wipe and should only be done under the guidance of a licensed HP Technician.

(2) "I'm experiencing inconsistent print lengths. Why?"

This issue is not RIP related. Check below for workarounds with various printers.

For HPs
On your HP's printer menu, set "Extended Margins". This should resolve the inconsistent print length.

For Encads
Onyx users who have Encads have recommended the following:
* Configure the X axis in the setup menu.
* Be sure to save your settings as "User 1" (without saving the settings, they disappear when you power down the printer).
* If produced in-house, add bleed to the image.
* If produced by someone else, print the image at 101% to bump up the finished size.
* Static and slippage can cause the issue.
* Canvas media almost always shrinks about 1/4 inch per 4 feet due to moisture and weave of the media.
* Talk to Encad -- they have a worksheet that explains how to best reduce the problem.

For all others
Most major inkjet printer manufacturers say that .5" on an 86" print falls within what they deem "acceptable". If your printer has Media Feed Calibration or some other feed mechanism calibration, be sure to do it... and frequently.

Description: HP Z6100 having issues with print length. Discussed firmware versions and extended margins setting on printer

Please feel free to contact us if you have any questions regarding this solution or this case. Be sure to reference the case ID

Posted on Mar 01, 2011

  • 1121 Answers

SOURCE: False ink empty

Are you sure its exclamation mark?..
This warning message related to print head. (warn out). When you are replacing ink tube assembly use dummy print heads to do the priming (new ink tubes are empty & they have to fill with ink)..
Action: Remove all cartridges and print heads, switch on the printer follow the screen message.(Insert cartridges first next dummy print heads).once its recognizes cartridges then it switch over to print heads,insert dummy print heads. Once printer recognized the dummy print heads, printer will perform priming, during priming dummy print heads will filled with respective inks.(follow the display message)Remove dummy print heads & insert normal print heads. Wait till printer recognizes print heads, load the paper & wait till performs the calibration, once calibration is successfully done issue closed.
If calibration not successfully done, check align print out for which print head is not printed properly, replace it..
Pl ensure that minimum 50% ink levels required in cartridges before performing the priming. Best of luck..

Posted on Dec 04, 2012

  • 175 Answers

SOURCE: HP Z6100- Magenta ink density fade

the printhead seat seal's may have worn/hardened and cracked/ or warped out of shape. If you feel confident to do so- remove the tube assy from the base front of the carriage( by removing ALL printheads removing the silver carriage cover and disconnecting the tube set from the carriage pcb) to reveal the Valve seats, remove the offending colours valve seat. strip the seat to individual component level and thoroughly clean ,testv the seal by squeezing between fingers and looking for cracks in the side wall of the seal.

Posted on Sep 11, 2013

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