Oki pro 920wt has colour registration problem

In user tools there is a maintance button press and then try color reg adjustment. If it doesn't sink color back in alignment it will say fail will need to call a tech . Could be anything from transfer unit bar that is shiny usually toward exit side cake with toner to laser failure

Try cleaning nozzle with dry paper towel, cartridge should leave 3 streaks: Yellow, Cyan, Magenta.
If colours on paper seams to be tinted or mixed the cartridge needs to be reclamated, there is no other solution.
If there is an lack of one or more colours try to wipe nozzle with wetted paper towel in window cleaner. After few wipes, 3 colours sholud apper

The printed colours are an "additive" mix of the "primary" colours in your printer.

So, when the colour ink-jet cartridge is "out-of-ink" on one (or more) of its colours, the "mix" will be off, and the "wrong" colour will be the result.

Change the colour cartridge.

Before changing it, run a "deep-cleaning" cycle, using the HP Support software that was installed when you installed from the CD-ROM that came with the printer, to "clean" any/all "clogged" ink-jets -- i.e., a clog could be preventing one colour of ink from being sprayed onto the paper.

Hi

If you haven´t used your inkjet printer for a while it may just be dry ink clogging some of the nozzles in the print head.


To check if yours is clogged...


Remove the ink cartridges
Holding the cartridge upright and press down gently onto a paper towel.

The colour cartridge
you should see YELLOW, MAGENTA (red) and CYAN (blue)

But if any colours are missing? The inks have probably just clogged up? and you will need to buy a new one or if you know you still have ink then you can easily unclog it with a
Magic Inkjet Flush Kit (Which you can find on Ebay)

MIXED COLOURS
If you have others colours coming out then the colours have mixed...
Sometimes caused when people put tape onto the inks to keep them moist but instead the colours mix through capilary action.


If so... leave print head sitting on a paper towel for a few mins until the correct colours appear.



Read more about ink clogs here:
How to Clean, Fix, Repair, Unclog, Dry, Clogged Print Heads on CANON, EPSON, HP, Lexmark, Dell, Olivetti etc…

To prevent an ink clog it is best if you print something regularly about every 10 days to keep the tiny print head nozzles / jets open. Otherwise the ink in the print head will thicken. Then it´s like trying to pass a camel through the eye of a needle.

So to preven inkjet ink from clogging print something every 10 days if you dont have anything to print, use something like these test prints

PRINT TEST SHEETS FOR USE WITHMagic Inkjet Flush

http://magicinkjetflush.com/Ebay/Print_Test_Black.jpg
http://magicinkjetflush.com/Ebay/Print_Test_Color.jpg
http://magicinkjetflush.com/Ebay/Print_Test_Cyan.jpg
http://magicinkjetflush.com/Ebay/Print_Test_Yellow.jpg
http://magicinkjetflush.com/Ebay/Print_Test_Magenta.jpg
http://magicinkjetflush.com/Ebay/Print_Test_Grey_Tones.jpg

Good Luck!

Hope this helps you!

Tinteiros (Ebay)

Hi Errol

The way to identifiy your problem is to send a full colour print to your printer and open the top just as the paper starts to come out . if you then remove your toner / drums for all the colours you can see the transfer belt if the quality of the image that you can see on the transfer belt is good and clear your problem is with the transfer form the tranferbelt to the paper and not any toner /drum issue and the most likley cause is the transfer belt itself "but before you relpace it remove it and clean around the electrical contact points and generally make sure the internals of the printer is free of loose toner .

Regards Alan (Alstech)

whipe the 4 LED arrays which stick out from the top when you open it up - with a soft paper tissue -gently, or use proper led-cleaner

Not able to print a status page. Tried holding down menu 5 sec and no output. I searched the menu and am not able to find how to print status page. I did print out a demo page and the black is great but when i print out text (like the entire menu map) the black is grey. Let me know if there is anything else I can do.

What is the stats % of drums if low under 50% change them, soon as you add non Gen you throw a spanner in any attempt to fault find, fix is possible toner more than likely drum/drums, do a print of each colour and change drums as indicated by failure in its colour to print, check transport belt is OK and led heads are clean

posted by Halfwalkeer on Nov 13, 2007 Report abuse

Just replaced the color toner cartridges in the c5100N, two OKI (cyan and yellow) and one non-OKI (magenta). Now it appears that registration is completely off.

When printing an image, there is a band of yellow at the top about 6mm high, and a band of purple (not cyan) at the bottom about 6mm high. It seems that the yellow printing LED array is printing offset. I've verified this with a typical test page that shows yellow blipped up by several mm.

What the hell happened ? How can I fix it ?

Thanks -

Dean.
Comment by Halfwalkeer, posted on Jan 02, 2008 Drums are all at 34%. Please don't tell me that the drums only have a 50% lifetime on them, because that would just suck royally. When you say the problem is most likely drums, in what way ? What could have gone wrong ?

I was able to more or less fix the problem ... It took several iterations of ColorMenu->Adjust Registration followed by Maintenence Menu->Menu Reset, but it was finally able to pull the registration back into line.

I got worried at one point - after it was "fixed" the printer was powered off. Upon powerup again, registration was off by several centimeters ! Another round of the above finally "fixed" it again, but I haven't powered it down again.

It was a cheap printer. Maybe this is why ...
Post Solution Work Queue Have the same problem? X This Problem has been added to the Share Your Expertise Page under "My Work Queue". OK Solution #1 posted on Jan 02, 2008
Soulvisitor
Rank: Guru
Rating: 86%, 674 votes

What is the stats % of drums if low under 50% change them, soon as you add non Gen you throw a spanner in any attempt to fault find, fix is possible toner more than likely drum/drums, do a print of each colour and change drums as indicated by failure in its colour to print, check transport belt is OK and led heads are clean
Comment by Soulvisitor, posted on Jan 02, 2008 I was thinking about the band of yellow being caused by cleaning blade wearing on drum, drums are garenteed by oki if over 50 %, under that one is on their own ie purchase new if having problems with them

If you can fix problem doing colour calibration then faulty drum is not likely the issue.

Cant stress how many problems are caused by non gen consumables in machines, highly dont recommend their use.

Colors registration need to be adjusted. It's a long procedure to describe. But if you are close to PA or NJ PhillyCopiers.com can do it for you.