From the looks of it, this is clearly a situation of overfilling. When filling, it is best to fill to the point where the sponge is still absorbing ink but is close to what can be considered full. You also need to plug the cartridge quickly after this point..like immediately. Why? After the plug is put on and the sponge continues to absorb ink, the ink exiting the reservoir side will need to create a slight vacuum on the reservoir side. The sponge will naturally absorb as much as it can under this situation and the overfill or oversaturation of the sponge will be controlled by the vacuum in the reservoir. When this is done, there might be a residual drop on the rubber pad and it will not leak out.
If you fill the cartridge till the sponge is not only saturated but is literally floating in ink and the reservoir is also filled to the max, then when the cartridge is removed from the clip, then the excess ink that the sponge is floating in will drop/leak out to the point where the sponge is at maximum saturation. Naturally the cart MUST lose this ink before inserting into the printhead. If you don't do so then and quickly put it into the printer, then what can happen next?
If you insert the cartridge into the printhead, the excess ink that wants to drip out naturally will eventually drip out through the nozzles and you will possibly get cross contamination on the nozzle plate and then you WILL have odd colors. I'm surprised this has not happened to you at this point. I have videos and the instructions recommends taping the vent hole to control the overabsorption of ink into the sponge. Alternatively you can do this quickly, a skill gained over time or use your thumb to cover the air vent to control the absorption process. These are all skills/tricks etc. that is gained over time through trial and error.
I have videos on my site and instructions pointing how to go about this. Refilling and how to do it well is literally a skill that is gained through practice. Despite the recommendations, you NEED to trip up before you get good at it. It's like learning to drive. You can watch videos galore, read so much about it, study it over and over but until you do it, you will not know what is required through trial and error. Especially so for driving in snow and ice.
This is why if you have never refilled before, do NOT try doing it the first time at a time when time is of the essence. Rushing things under pressure will invite disaster.
I always get asked, why should I reset chips before refilling? Sometimes, I should neglect to recommend that why? Because if you DO refill before and then reset afterwards, then it will be etched in your mind in the future for good why it should not be done! That's the way human brains work, you have to mess up to learn or else you have not learned anything.
If you fill the cartridge till the sponge is not only saturated but is literally floating in ink and the reservoir is also filled to the max, then when the cartridge is removed from the clip, then the excess ink that the sponge is floating in will drop/leak out to the point where the sponge is at maximum saturation. Naturally the cart MUST lose this ink before inserting into the printhead. If you don't do so then and quickly put it into the printer, then what can happen next?
If you insert the cartridge into the printhead, the excess ink that wants to drip out naturally will eventually drip out through the nozzles and you will possibly get cross contamination on the nozzle plate and then you WILL have odd colors. I'm surprised this has not happened to you at this point. I have videos and the instructions recommends taping the vent hole to control the overabsorption of ink into the sponge. Alternatively you can do this quickly, a skill gained over time or use your thumb to cover the air vent to control the absorption process. These are all skills/tricks etc. that is gained over time through trial and error.
I have videos on my site and instructions pointing how to go about this. Refilling and how to do it well is literally a skill that is gained through practice. Despite the recommendations, you NEED to trip up before you get good at it. It's like learning to drive. You can watch videos galore, read so much about it, study it over and over but until you do it, you will not know what is required through trial and error. Especially so for driving in snow and ice.
This is why if you have never refilled before, do NOT try doing it the first time at a time when time is of the essence. Rushing things under pressure will invite disaster.
I always get asked, why should I reset chips before refilling? Sometimes, I should neglect to recommend that why? Because if you DO refill before and then reset afterwards, then it will be etched in your mind in the future for good why it should not be done! That's the way human brains work, you have to mess up to learn or else you have not learned anything.