a few days ago I was lounging over at the Ink forum and some of our fellow memebers express their concern that they can no longer get their needed permanent black , the fabled Platinum Carbon Black. And I though to myself, hey others made permanent ink also and having some time on hand I dedicate some time to investigate how one of the old formula work out, namely the Hero 234 CArbon Black.
The test is not anything scientific and only trying to mimic how the ink deal with real life accidents; and here's the result :
* Test no.1 is to mimic artist use of ink , Canson 180g Watercolor paper was used, text was put onto the paper, and let sit for 10 min, then smeared with waterbrush, excessive water blotted with facial tissue
* Tesat 02 is to mimic having water spilled when doing normal daily writing, Kokuyo Gambal notebook paper, procedure same as test 01
* Test 03 is to mimic accidental water damage when dealing with document well finished, text was put onto paper, and let dry overnight, then is immersed and left in water for 30 minutes, paper used is engineer's stenograph paper ( very fine smooth surface, very light grade )
* Tesat 04 is to mimic water damage in storage, same paper and procedure as test 03, again let dry overnight, then smear with water brush then let it go under running water for 30 min.
I say the result speak for itself. It Also show the one character that this old formula had, its slow drying property, as depicted in Test 01 and 02. As side note, Hero had actually 4 different kind of carbon ink, the 84, 214, 234, and 440; and also a non carbon permanent black, the 254. The 234 as picked simply because its the only vintage ink between the lot and having some interesting property. Its more formulated like a calligrapher's ink than fountain pen ink in that it had very high carbon content and that it do use ( plant based ) resin. In fact on its packaging its proclaiming suitable for calligraphy ( by that the made mean small text Chinese brush and pen calligraphy ). ITs known to clog pens if one do not use the pen inked up frequent enough. I've used this ink since way back as a school kid and what more can one ask for a bottle of 55ml which only cost say 3.00 to 4.00 US
Edited by Mech-for-i, 17 February 2017 - 17:48.