Restoration graphics
 

Dear,
often occurs on a solid auction, offers graphic mid /late 19 th century in almost perfect condition.
The question is: is there a restoration technique, which allows to restore the yellowed, stained, rust, paper 19-th century to the white "as new"?
Predpolagayu that yellowing around the figure can be removed. But is it possible to remove the yellowing under the picture?
Our offer as an example to discuss the work of Ilya Repin:

Almost perfect condition - the result of proper hraneniya.Vlaga, temperature and sunlight - adversely affect the safety of bumagi.Krome addition, when dealing with rarities on paper needs to wear thin cloth gloves t.k.ostayutsya fingerprints manifested over time spots.
Do not see the point in "clean" yellowness and "fox spot" because it is one of the signs that the paper is not today.
Here's how to remove zateki, when the old paper or cardboard gets wet and formed "halo" I do not know. 'll Show if anyone knows.

There are of "rusty" zatekov means-several.
Restorers themselves create a compelling cost formula depending on the nature of "zatekov and aging them.
I knew two or three forgotten as useless, now I'm afraid to make a mistake in the names of ingredients, and do the name-confusion, the same they have several.

Removing yellowing and dirt on the paper by washing
Bleaching

Thank you for this site I izvesten.Dazhe who is rekomendoval.K unfortunately - for watercolor, gouache and pr.gde are water soluble paint, it applies to a very high degree of risk to destroy everything.
  Here is the result of my attempts (right). If that all tried to do "science."
Decided to do everything and leave, but when you make - to cover mat.

With interest read.
There are many nuances, but with some technique tight affair.
One thing not understood until the end, but is it possible to remove the yellowing under the picture?
It is interesting to hear the opinions of professional restorer, with a clear display before and after.

Are you sure that this Repin?

but God knows.
http://forum.artinvestment.ru/showth...ghlight =?????
Then with#3 already subject sideways rose. In my opinion he is.

Look here:
http://www.antikviteter.net/antikpra...tml?1243280506

Continued here:
http://www.antikviteter.net/antikpra...tml?1243561336

There - an example of ancient engravings bleaching solution klorin (In fact, translates as "chlorine", but probably refers to chloramine). Bleached all yellow - and under the picture, too (photo sequence of the entire process there). This is taken from a page similar to our forum art lovers of Scandinavian countries (Sweden, Norway and Denmark, were part sometime in the Kalmar union - "Tre krunur"). But there is more bias towards art than in the direction of investment. The local forum users communicate with each other in three languages, knowing each other. If you, as I understand, fluent in German, then you too will see what they say. For example, Swedish, roughly speaking, that the German words with English grammar.

But, frankly, I would not advise you to conduct most experiments with patterns Repin. I would take something simpler, such as first experiments would be conducted with his figure, which would be made on the old yellowed paper. Although if it was made in pencil or charcoal, as if nothing bad should happen - if you do not overdo with concentration.

Your image Repin can whiten chloramine (he hlorantion), which was said. White powder, sold in pharmacies. If there is no you advise similar means - you can take! Dilute in water (destilirovannoy) 5-7%p-p. It is desirable to find a dish in which to fit your image all without bending and not piecemeal. The main long time to keep in solution, because paper can greatly raskisnut and tear when it will be taken out. For drying stock up lots of filter paper, pure white color. To dry under the pressure of shifting layers of paper with two sides and changing the periodicity 1-2 hours:)
Hlorantion only suitable for pencil drawings. Spots with watercolors or other color graphics can try to remove with a cotton swab dipped in a solution of 96%alcohol.
Here are a couple of examples: