Status Page.JPGHas anyone seen an image defect like this? What could be the cause of it? Did a mid-print test and the defect is on the image drum, so prior to fuser. Haven't worked on Kyocera copiers much so am still learning how they operate. I really feel this is a bad connection problem, but not sure where to look. More familiar with HP products, so these just look different.Is there any free service manuals out there for these things? I have just be kind of doing a trail and error type of trouble shooting with this one.So you have the whole story on this thing: Machine was producing dirty copies, so we decided to take it apart and clean it. Went as far as pulling the image drum and developer roller assembly. Put it back together and it was producing clean copies..... but now had this (2nd photo) on the pages:Start of problem.jpgWhich has progressed to what you see in first photo.Any ideas or suggestions? Have went back and checked all the connections and they were good.Thanks.
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Re: KM-3060 image defect help
That you're seeing is called "mottling" in Canon terminology. What happens is toner adheres to the mag roller for a couple different reasons. Most of the time the mag roller can just be dry-wiped without emptying the developing unit. Just rotate the mag roller in the correct direction (down) to access all surfaces.
Mild mottling can be caused by high humidity.
Severe mottling like you are seeing is usually caused by using crappy aftermarket toner. Just look for the holographic Kyocera sticker on the front of the toner cartridge. If you don't see the sticker you can be sure it's crappy aftermarket toner.
There are many other possible side effects of using crappy aftermarket toner:
Broken drum cleaning auger
Poor fusing
Toner build-up on the fuser rollers.
Users of aftermarket toner save hundreds of ... cents, and end up spending hundreds of dollars repairing the final results. Don't be one of them. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^= -
Re: KM-3060 image defect help
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Paul@justmanuals.comComment
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Re: KM-3060 image defect help
Blackcat: Thanks for the reply. I am going to go and clean the roller and see what happens. We are in the desert, so humidity isn't likely. This is a machine used by the military, so crappy toner gets my vote!!
Does mottling usually start off as a small area and grow to a larger area like what is seen here? I hasn't gotten any bigger, but hasn't gotten any smaller either now.
Broken drum cleaning auger? Is there an easy way to check this? Since the mottling is at, what I suspect, is the output end of the developer maybe I have a pile up of toner here. What should I look for while I have the developer out?
When I had it out before, I did remove the scraper bar and cleaned it and wiped down the roller at that time. Guess I will take a close look at the workings of the developer roller assembly and see what I see.
Thanks I will get back to you one this and let you know what is going on, or what I find.
@ Manuals4You: Thanks, I may have to take that avenue. I just would like to look at the manual before purchasing it. Have purchased other service manuals, sight unseen before and found they weren't worth the paper they were printed on (or the electrons that made them up).
Thanks guys, off to tear into a copier.....Comment
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Re: KM-3060 image defect help
First off.....THANKS!!!!
It was really obvious that is what the problem was, once I pulled the developer out. Wiped it down with a lint free cloth, put it back together and it worked like a champ!
The toner cartridge does have the emblem on it, so maybe this is just a fluke thing or maybe someone contaminated the drum when we had it apart.???
Will let it run like this and see if the repair holds.
Thanks again!!Comment
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Re: KM-3060 image defect help
Yes, exactly. You can also get mottling from a developing unit with worn out bearings, but if I recall, you've already replaced it.
Sure. Open the sleeve at the waste bottle end of the auger with one hand, and rotate the drive manually with the other. When rotated in the correct direction you'll get a steady sprinkle of waste toner from the outlet, and see the end of the auger turning. The broken ones I've seen were snapped off right at the drive gear, so if the gear is still sitting in the paper path after you pull the drum unit, that will be a good clue.
Just look for the tiger stripe pattern appearing crossfeed on the mag roller, and the pile of toner collected by the registration roller cleaner.
The registration roller cleaner will be full of dumped toner and paper dust, so yes, you'll need to clean that. Most of the time it is unnecessary to remove the S-blade. Only when you get foreign objects in the developing unit, will you want to remove the S-blade. For example void areas in the toner brush. You must be a Sharp tech. I haven't heard the term S-blade or Scraper Blade in a good long while.
The developing unit holds about 1/3 of a cartridge of toner, so if the current toner cartridge has been recently replaced, it could take quite a while to consume a developing unit full of poor quality toner. That's my best guess. The drum unit won't have anything to do with it.
If it doesn't, vacuum out the developing unit of all toner and refill the unit via simulation U130. Then you know for sure that it's all OEM toner. It sounds like you've got it covered. Good work. =^..^=Last edited by blackcat4866; 03-24-2012, 12:09 PM.If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: KM-3060 image defect help
Repair seems to be holding up. However, have noticed the same area is starting to produce a little "dirty" copy, it may be the toner starting to build up again. Will watch it and see what developes.
No, didn't replace the developer. Everything up to this point has just been cleaning, checking, and hoping.
I, sort of, grew up on HP laser printers. Several years ago was teaching the military (USMC) laser printer repair and use HP printers for the classroom. So have been trying to apply that therory to this copier. Image formation is a little different, names have changed, but seems to be working for me (so far).
Going to wait on the tear down of the machine. The "dirty" spot will either get worse and will force me to tear it down and remove all the toner from developer. Or the "dirty" spot will go away on its own, as the old toner is used up. (If it is the toner).
Have found this to be interesting, almost makes me want to take office machine maintenance up as a second job.....
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Re: KM-3060 image defect help
We didn't discuss this, but I think you already know that this Kyocera is monocomponent developing like the majority of the black & white HP printers.
If it was dual-component developing you would not be able to just wipe off the mag roller. The volume/composition of the starter in dual component developing is crucial. You can't just dump some out and expect copy quality to maintain. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Re: KM-3060 image defect help
Just as an FYI for this.
We had this problem on the same model machine and it ended up being the HV connection in the back of the machine for the Dev Unit. Basically the dev unit wasn't getting the right voltage. I think we replaced drum and dev units before we finally figured out the connection issue.Comment
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Re: KM-3060 image defect help
@ ES-OGT - That's where I was orginally headed, loose/dirty connections. Had pulled the back off of machine and tried to trace HV connections the best I could, without a book. Things looked good, but then I could have inadvertently corrected the problem without seeing it too!!!
@ BlackCat - Thanks again, for the explaination and help. The repair seems to be holding up just fine. Been about two weeks or so and haven't had any other issues with the machine.
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