I am getting a strong magenta colour cast, despite thorough cleaning - help
My r320 has developed a strong magenta cast, despite cleaning and also installing a drain bottle to release used ink. I'm at a loss, and I'm also very much a technophobe, so any assistance needs to be in words on one syllable please!
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Most printers have 4 color inks: Black, magenta, cyan, yellow.
If your magenta ink isn't printing, then your prints will have a green cast.
If your printer has a "nozzle test", I suggest doing that. If it has a "head clean" function, that may help.
Replacing the magenta ink cart may be all that's needed.
that looks like a knoica minolta code not a kyocera.
Worn "Y" developer- is the developer at or near end of life?
Worn "Y" developer unit- is the developing unit over life?
Dirty Gamma sensor- take out Colour registration unit and thoroughly clean the gamma sensor.
I strongly suggest that you NOT attempt this unless you are thoroughly familiar with the correct assembly/disassembly procedure. That means you need a factory service manual. They are available online.
Believe me, it is NOT a simple case of "take off the cover and pull out the pads". Just to get to the waste ink pads is MAJOR SURGERY on this printer and will require several hours of your time.
It is not just ONE pad either. I believe there are at least SIX.
The other week I had the black print head clog up, requiring daily nozzle deep cleaning [a normal 'ocassional' maintenance function]. Thought I needed a new Print head, so anything worth a try.
I loaded up an old black cartridge [I load all my own......always have] with Isopropyl Alcohol and ran deep clean on that cartridge a couple of times, then repeat printed [6 times] a page full of the number 8 in about half inch character size, to get the alcohol through the nozzles. then Deep cleaned again 3 times, to wash it through the print head.
I reloaded the normal ink filled cartridge and ran the '8' page again till I got good black output. It has now been working without problem, daily, for over a week. Clearly if it's a Magenta only problem, the cleaning as described above would be a bit different, as the magenta is one of 4 colour cartridges.
My printer does quite a lot of work, and was bought at least a couple of years ago, being used daily for alpha numeric and photo printing work. This was the first difficulty I experienced with it.
Hope the above might help.Ken
I am going to answer this even though there was no reply to my clarification report.
No, it is not a HVPS problem. This is a magenta developer problem. The magenta developer for some reason has the highest failure rate of all the developers, including black. Perhaps because there are more shades of magenta in color prints.
Since you changed the toner, we can assume you are not out of magenta, but it is possible that you did not run a developer cleaning in the maintenance mode on the magenta developer.
If the magenta toner had been allowed to run out all of the way, a developer cleaning would allow the toner auger to move fresh toner from the toner dispenser, through the feed tube, into the developer.
If you have run the developer cleaning, and you can see that there is magena toner on the magenta developer ( for clarification, the developers are located behind the imaging drum. remove the drum to expose the 4 developers ), then the developer itself is defective.
We have over 50 of these printers and a few have had the magenta bleeding problem. On everyone of them the problem was corrected by going to the clean developer function under Maintenence from the Menu and choosing to clean the magenta color. Usually have to run it a couple times but it has always corrected the problem so far.