Ink stains
 

That is such a problem: the ink smudges. They are removable?
The work is made fountain pen and conventional inks

I would advise you to go to this forum http://art-con.ru/forum, there are going to professional conservators, including graphics, they can give advice

I remember when I was in school, we were forced to write only dip pens and ink, respectively. I have often used the so-called ink eraser pens (ink eraser, but not as an eraser in the traditional sense of the word) to correct errors. The ink is literally disappearing before our eyes. I have written with blue ink (or rather turquoise - turquoise), I can remember that the black situation more complicated, but you can try. Keep in mind that as a result of this procedure over time may show yellow spots.

Here's a sample:
http://www.anythingleft-handed.co.uk...ctor_pens.html

Not see the need. Moreover, it is not clear how to remove ink stains from work done in ink by the above method - along with part of the picture? Start address, make still huzhe.Ne bother. As they say - fool would not understand, and intelligent think that so be it.

VYACHESLAV, unfortunately these things a lot - 10, is the work of BP Sveshnikov, I would like to bring them into presentation

This gives them "flying time" and confirms the authenticity .. (and the beauty of the material). I agree with Vyacheslav: Do not bother!

Everything is possible. Sitting under a magnifying glass and ml per ml of bleaching the ink stains. Then this place can turn yellow, but maybe not.

I would not bother, but this is only the most melenkie spots, but there is much more severe than the fill. So, this is a problem ...

There vinyl erasers with a solvent (inside the erasers are microcapsules with a solvent, which removes the ink, which burst during erase). Sale, for example in a shop for artists' Peredvizhnik. " You can hold down a piece of the eraser to the pencil or pen Collet and try to pass them on the spots between the lines of the figure. And what happens. Looking for only the time, thoroughness and patience.

And here is how to remove a watercolor in 1928? Once someone on the back stamped. Watercolor damp (much earlier than the hit to me), print soaked, the ink leaked through the paper on the front side. Interestingly, themselves watercolors while not soaked.

Earlier, a watercolor on paper mat, the ink from the print got soaked and it, there's got a spot. So it is with which to experiment without risking ruin watercolor. Hydrogen peroxide (3%) has no effect on this spot.

I read that such stains are removed with oxalic acid. Got it (in solid form, chemically pure), but do not know what concentration to do as technically remove the stain. Tell me, please.

In principle, I have access to the university's chemical laboratory, so that problems with equipment or with any reagents not arise.