eco p3150 continuing image quality problem

**Rainer** · 09-14-2021

Originally Posted by Drivee

I think that this is air bubble in toner. When pressure roller and fuser start to bake toner, it explode and push toner out from line.

You mean, if you succeed in ordering "air-bubble-free toner", there is no effect? I think it clearly has to do with the moisture, which can also be observed well. (no effect at i.g. 60%, effect there if 65% or more ...). The kyocera support has also confirmed this behavior and it is documented in the service manual.

**Drivee** · 09-14-2021

Good to know.

I have some cartridges which give me same effect. Change cartridge that problem disappear. Only difference between cartridges is a toner.

**Rainer** · 09-14-2021

Originally Posted by Drivee

Change cartridge that problem disappear.

Well, nothing can change immediately after changing the toner, because it takes a while for the new one to get onto the paper via the developer unit ... Could it be a coincidence that the humidity changed after the toner was changed?

**Drivee** · 09-14-2021

I know that, I need 300 pages to reach new toner. Depend of coverage. Humidity is same, as I am in toner recycle business, I did talk with Japan about that problem. Their explanation is air bubble.... However, I am 100% sure about it, they will sometimes talk to me kids stories. I mean, for Kyocera, most easy way is to point finger on end customer and printing environment. Imagine that they say: We bay bad toner and settings of printer sometimes need to be changed.

I think that in this cause.. only toner from DEV section is bad.

**Rainer** · 09-14-2021

Maybe the effects are different. I have observed this moisture-dependent effect on two p3145 machines, with completely different serial numbers and production periods. I think it is unlikely that the original toner supplied with both devices will be bad ...