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I hear that rubbing alcohol has oils mixed in. For this reason I would stay away from rubbing alcohol.

I have an R2000 for piezography and love it. I understand it's a workhorse. The only issue I have is the quality of aftermarket carts. I tried fairly well known supplier of carts and air kept getting into the carts. I switched to a more expensive cart and have had great success with them...

I noticed that you mentioned that you had four channels completely missing on the right. I'm not sure exactly what the R2400 looks like, but I suspect its capping station has two blocks. I bet one side isn't pulling ink through. I'll bet the clog is in the capping station. One trick is to...

In another thread you commented on how the cartridges had been trimmed already. Was this on your colour 1430, or you B&W printer? I'm wondering if you ever checked the exit port of this particular K cartridge. I never asked you how old your ink was. I have some bottled fountain pen ink that...

Paul, Be extremely careful with the sucking and pushing with a syringe on the printhead. A couple of years ago I got a cheap clogged R2880. I got it to play with and learn on. I learned that you can blow internal seals if you use too much pressure when you suck backwards or push forwards...

Paul, What I said, or meant at least, is that you don't need to worry about the type of neoprene seal. I would still trim the inner portion. You know how IJM uses the vacuum method for first time filling of carts? That requires the cellophane seal to be intact. So I would fill a new cart...

Paul, Every once in awhile, people have returned faulty cartridges for IJM to test. Is it possible they mixed them up and you got one of the "returned" cartridges? Unfortunately, this is where the business end of most companies stumble, I doubt they'd admit to doing something like that. (I...

Paul, that's interesting about the seal being removed by IJM. The seal is usually left covering the rubber seal during transport and should not have been removed prior shipping. Normally, when the nipple pierces the seal, the cellophane brakes into 3 "tabs" that get mushed against that...

Thanks Martin. In case you missed my original pictures from earlier in this thread, I found an even bigger issue with refillables. The shape of the seal is less than acceptable on some. On some refillables, the rubber seal is notched or something. If you look carefully at my latest pictures...

Thanks Paul, I don't need trophy points. It's enough to be able to help someone after all the help I've received from others. Besides, I'm not sure if this will solve your problem or not. I know it has, so far, solved mine. Larry

Paul, I can't answer this question. One of my clogs was always in the Selenium shade #2, one shade lighter than the darkest shade #1. However, you're using Eboni ink, I suppose that could make a difference, but I suspect it's just chance it's affecting both blacks on the 1400 and 1430. Larry

The Hat, I have had absolutely zero troubles with carts with my R3000. The issue I'm having with carts seems to be specific for piezography and Epson printers with the carts on the head. Because piezography ink cannot be used in a Canon printer, we are limited to Epson printers here. As for...

Cart #6: Flushing the exit port with piezoflush. This should probably be done with the exit port facing down so that any debris would flow out. I have the exit port facing upwards so I could take a picture. Cart #7: swabbing the exit port. Any debris that doesn't flush out naturally with...

Paul, This will be a little bit long, but hopefully complete and easier to visualize. I am showing the process using a NON-IJM cart because I have already done this to all my IJM carts. Cart #1: Notice the cellophane inside the red circle? This is the cellophane that seals the exit port from...

Paul, No worries. It can be hard to see and understand when not shown in person. Cart #2 was trimmed exactly the same way as cart #1. I only ever trimmed the inside the circular portion. The third image had no trimming at all. If you zoom in on the third image, you will see a triangular...

Paul, I'm sorry that the 2nd picture is blurry. I was having trouble getting a good focus, and the camera I was using had not manual focus. Even though the cart #2 image is blurry, you can see that the seal inside is perfectly conical, whereas the seal in cart #1 has something that looks like...

Paul, I see what was confusing and have clarified it. Take another look and see if it makes sense. What I meant by "dropped nozzles" was an incomplete nozzle check, or missing segments in the nozzle check. My solution would likely only fix random missing segments in the nozzle check. Since...

Paul, take a look the second issue I referred to. This also affected new IJM carts. Try trimming the excess cellophane from the exit port of the cartridge so it looks like my second picture. This made a difference for my IJM carts.

Paul, did you have a look at your cartridge? I'm curious if the observations I made of my carts is common among many carts. Because a single head clean is often enough to clear the trapped air, I'm sure it's gone ignored by many for a long time. Larry

Just so you know, the cart with the "Poor seal" is a non-IJM cart. The cart with the "good seal" is an IJM cart. I still had the odd dropped nozzle with the IJM carts until I trimmed the cellophane. The non-IJM cart continued to drop nozzles even after trimming. Larry