This post is about some very interesting fountain pen ink, Reynolds Erasable ink which I received from my friend and follow blogger of Mr. Sir's Blog, you can also follow him on Twitter @ecram.
I was not able to find any information about this ink, except in French which I can't read. So I'm just going to tell you about it.
This ink comes in standard cartridges and the carts that Eric sent are blue. I'm not sure if it comes in other colors or not.
This ink comes with an interesting accessory, it's own eraser and what I have termed "the repairman". The eraser end is effectively a marker which contains some sort of secret solution which magically erases the fountain pen ink from the paper. After you have used this marker, you are no longer able to use the fountain pen ink on the area of the paper which has been treated, so in comes the repairman which is used to rewrite the erased words, if needed.
I have used this in my journal with great success, no need to cross out misspelled words - YAY! The photos here show it on Rhodia paper which also worked will, however the ink color from the repairman did not match up as well, I think that it just reacts differently to different types of paper.