Restoration of readability CD. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Restoration of readability CD. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Computers

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As for polishing the combs, I can say the following: I easily, in about 20 minutes, "resurrected" a bunch of combs with different types of scratches using old denim pants, making a glove out of them. And I did not use pastes - they only scratched. The surface is obtained like a new company. So try this way.

recom.newmail.ru

Restored a completely unreadable (green) CD-R disc as follows: Take a metal object with non-rough edges (I used a regular teaspoon). Then, in places of scratches, the top layer is very carefully removed "(if you can call it that) by banal friction. After that, the place of processing is polished with a piece of felt. That's all.

Site "City of Masters"

To eliminate scratches on a CD that interfere with its reading, you can use ordinary GOI paste or something similar. Dangers - you can accidentally damage the information layer (when you press the disc, or put it on a surface that is not completely clean). If you can’t see holes in the aluminum through the light, there are no cracks, then there are quite a lot of chances. Method: Stock up on a sufficient number of rags - preferably cotton (wool scratches plastic, I was convinced in the army when grinding plexiglass with an overcoat), old bed linen goes very well. Prepare a flat and clean surface - a piece of glass, for example. Spread a rag with GOI paste (not much, better with diesel fuel or kerosene, but you can do that)... Spread a rag on the work surface (smeared up) and fix it. Usually one end is placed under the glass, and the second one is held tight with the free hand.The disc is placed on all this green dirt and with light circular movements... The shape and direction of movements are described in detail in the carpentry manuals (furniture polishing :-). scratches disappear, and large ones become transparent.

You can try that as well. Translucent "scratches refract the laser beam, it is not known how, and accordingly it is not known what we will get at the output. Therefore, we change rags. If there is a choice of GOI pastes, we choose a thinner one. If not, then we just continue on a clean rag with the addition of kerosene or solarium. In the end everything on a clean rag must be washed, wiped, brought into a divine form. In general, the matter is long and tedious, but if there is no other way out, it helps. And one more thing - when polishing, do not overdo it and do not overheat the disc - even with a small, it would seem, pressure, the surface heats up noticeably.

Author unknown

You may have noticed that colored CDs tend to read more reliably than white ones. This is based on the property of the laser beam, and the scratch masking method is also based on this. All information on the disk is duplicated. Therefore, the task is reduced to preventing the beam from jumping from the track being read to another. You will need a sharp stick (you can sharpen a match), a magnifying glass and brilliant green (it is sold in a pharmacy). Everything else is simple. Dip the wand in green paint and paint over the scratch. As a result, the beam will not be reflected from the edges of the scratch and will continue along the same track. There is no 100% guarantee, but if the scratch is not from a nail, then it often helps and the costs are minimal.

Author: S. Nelyubov

Publication: cxem.net

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Effective antimicrobial film for gadgets 19.07.2014

Fujifilm has developed an antimicrobial coating technology that provides approximately 100 times better protection against bacteria than current silver solutions.

The new technology is called Hydro AG. It is supposed to be used in protective films for LCD touch screens and touch panels of equipment used in medical and educational institutions, public places.

The basis of Hydro AG is a superhydrophobic plastic with ceramic microparticles, which includes an antibacterial agent that can gradually release silver ions. The manufacturer notes that Fujifilm's experience in the creation and production of photographic film and high-precision coating technology was useful in the development. The project involved Toyama Chemical, a company specializing in evaluating the effectiveness of antimicrobial coatings.

The principle of operation of antimicrobial coatings is based on the release of silver ions due to wetting of the agent containing them. Ions bind enzymes on the surface of microbes, rendering them harmless. Thus, to increase the efficiency of the coating, it is necessary to increase the number of silver ions. The Hydro AG film is made from a superhydrophobic material that is almost completely water repellent. Due to this, water acts only on the agent particles embedded in the film, getting not only on their surface, but also penetrating deep into, thereby increasing the yield of silver ions and the service life of the coating.

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