Restoration graphics

[sergejnowo]

Сообщение от vyadem

Removing yellowing and dirt on the paper by washing
Bleaching

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.

[Amateur]

Сообщение от sergejnowo

The only 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.

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.

[Марина13]

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:

[Amateur]

Сообщение от Marina13

To dissolve in water (distilled), 5.7%p-p.

Swedes recommend weaker: 3 - 4%solution.

Сообщение от Marina13

The main long time to keep in solution, because paper can greatly raskisnut and tear when they remove it.

And specifically how long to keep that paper does not limp? I understand that it depends on many factors: variety, content of wood pulp, age, and keeping the original quality of paper production, so it is difficult to give an exact answer, but at least an order of magnitude? And can we somehow move the process to determine that the paper is about raskisnet, and urgently need to remove it from the solution?

[Марина13]

The lower the concentration of the solution, the longer the holding time, which is undesirable. I always see to eye when it's time to remove. I think time 10 minutes - maximum. If the paper is not enough bleach - better to repeat again after complete drying.

[NATA NOVA]

Though I liked the last picture (but rarely like that) .. Stylish, literate, soulful ...