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Is there anything I can do first to avoid buying a new printhead?

So, I use a Canon 4000 at a maker space and I came in this morning to find it had an un-numbered error on the screen. It said...

Didn't think about that but I suppose it's possible. The sticker says it's an FR/GR drum and it has the "green" designation on it as well. I always thought that the black drums will only be...

It would be great to get the correct size brown, yellow, blue, teal, bright red, flat gold and fluorescent pink. The green cartridges I bought work... and so do the brown ones for the most part, but...

I wish I knew a place where I could get GR / FR ink reliably because clearly eBay is not the place. The people selling the ink on eBay are simply copying each other's listings and it's like a giant...

Actually your info is very helpful. I'm just telling you the tubes aren't swollen... they are just long. I do have some slightly swollen tubes but they still work and fit correctly otherwise.

Nah, like I said, the tube fits into the hole just fine, but it's too tall.. it sticks out a good centimeter or so like the RP/RN inks, so that it can't lock in with the green latch.

I didn't know...

:: sticks fingers in ears :: No No No!! You're saying things I don't want to hear!!! ;)

You're right, this is all old stuff. However, I actually managed to print with an RN/RP cartridge... I was...

Is there a cheat sheet somewhere of what inks work with which drums?? Clearly Riso make it difficult to interchange inks to increase supplies sales, but I know for a fact that some inks of one series...

It is definitely the "FR Series Technical Manual". I have four digital manuals downloaded while the Riso guy was on his account at the Riso website... the FR tech manual, FR parts manual, GR tech...

Well I've cleaned and de-rusted a bunch of GR drums and so far only my bright red GR drum blows the F5 fuse. A GR Burgundy works great in my FR3950. So I think it can be said that GR does work in FR...

Howdy folks.

I've been searching the forums, comparing them to my FR tech manual that the RISO guy gave me access to before he left a couple weeks ago.

He fixed the problem I was having where...

It's the "F5" fuse (I'm looking at the tech manual which the guy let me download from his tech account), which is the 3rd one from the right.

I think I'm going to start taking apart as much as I...

Some of you might remember I recently acquired a bunch of Riso equipment. An FR3950, a GR3750, a bunch of FR/GR drums, GR drums, an RC drum and three RP drums. Besides the FR3950, which runs...

Since I'm not a tech and I have a bunch of Riso equipment here that I'm cleaning up and/or having trouble with, I was thinking it might make sense to bring out an expert or someone who is at least...

Thanks for the diagnosis... I think you may have been correct. I originally couldn't remove the drum but then I remembered the "code" to unlock the drum tray (pressing the two buttons, "Line/Photo"...

I have a lightly used Riso FR3950 I just picked up and has only ever printed black I believe.

I managed to acquire some old GR, FR and FR/GR drums. One of them is Green, and the ink seemed pretty...

Hello, I'm a complete newbie at Risography. I'm coming at it from an art point of view and I want to provide an alternative to fellow artists looking to make multiple affordable work for their fans...