There is a kind of injustice that is too numerous to be written, and there is a kind of love that is too short to be written. In the ancient Chinese saying, "too many bamboo" and "chi" are synonyms for notebooks or letters. Although paper is no longer an expensive item in today's society, because of the long regeneration time of trees, the raw material for making paper, saving paper has been a global consensus. ELFIN BOOK, as a rewritable notebook Love to play computer games Appearing attracted the attention of many probationers and triggered a frenzy of registration~

What the author is curious about is not its rewritable technology. In fact, it is similar to the whiteboard principle commonly used in office. There are two key points: First, the paper must be smooth enough, and second, the ink used must be water-soluble.

The paper used by ELFIN BOOK is a new type of paper with calcium carbonate as the main material and high molecular polymer (which can be understood as plastic) as the supplement. It has changed the traditional way of making paper with wood as the main material. At the same time, it has a certain degree of degradation, so it is not only environmentally friendly but also an excellent substitute for protecting trees.

ELFIN BOOK is interested in the smoothness of stone paper and its hydrophobic characteristics. When used together with a special erasable pen, it can achieve the effect of repeated writing for 10 times, which is fun and saves paper, protects tree resources, and achieves the goal of environmental protection;

Open the notebook and you will see the loose leaf made of so-called "stone paper". The black cover and back cover contrast with the white inside page, and the impression is good;

Scrolling the inside pages by hand, the paper has a smooth and watery feel. The paper made of limestone and PVC has less astringency than ordinary wood pulp paper, and it is estimated that the writing is different;

In addition to stone paper, ELFIN BOOK also has a second key accessory - Baile erasable pen! The so-called erasable pen means that the ink is special, and the appearance of the pen is ordinary. This ink is actually a high-tech product produced by the Japanese pilot company. It is extremely sensitive to temperature. It is colored at room temperature and low temperature, and becomes colorless at high temperature greater than 60 ℃.

As can be seen from the following figure, the author used a hair dryer to conduct a heating and erasing test on the handwriting. It is true that the handwriting is slowly disappearing, but the speed is very slow and strange phenomena occur. Let's take a look at the video.

It turned out that the handwriting that had just disappeared after being heated by the hair dryer in the front was "revived" after the hair dryer was removed! Normal Baile erasing ink should recover its color at low temperature (- 10 ℃) rather than at normal temperature, so the author believes that there is a problem with this Baile erasable pen.

The ink of Baile eraser can also be erased with a wet paper towel, because the stone paper does not contain wood pulp The water solubility is very small. ELFIN BOOK officially said that the stone paper can be rewritten 10 times, but after the author's test, the paper is basically intact, but the ink of the Baile pen is limited and you have to go online to clean it;

One thing to note is that if the handwriting is removed by heating, the ink is not eliminated, but only becomes colorless. Once it is frozen below - 10 ℃, the handwriting will be recovered. Therefore, the best way to remove the ink is to use a wet paper towel, so that the original ink can be completely wiped off, and the pen tip should not be too strong when writing, so as not to leave a dent on the paper that will affect later writing.

For erasing two words, ELFIN BOOK also provides a method similar to skin erasing, that is, turn the rubber on the top of the pen to use as a skin eraser, align the words to be removed and rub them for a few times. In fact, this is also the principle of eliminating handwriting at high temperature. The high-speed friction of rubber on stone paper generates heat, and the ink disappears when it reaches 60 ℃ locally. Similarly, this method is not really erasing, as long as it is kept in the refrigerator freezer for a period of time, it can be recovered.

Although repeated erasure is very powerful, what if the data written in the front is very important and you don't want to erase it? No problem!

ELFIN BOOK provides a mobile app for users to save important data. The author installs the Android version, which requires registration as usual, and can be upgraded to "advanced users" for free according to the attached registration code. Of course, the privileges and functions of VIP will be much higher.

In fact, this app is very similar to a scanning software. It can automatically cut and set the layout and adjust the contrast. The difference is that it can share the retained pictures as PDF files, or simply share them to yourself and then receive and save them.

Summary:

ELFIN BOOK, as a new type of notebook that is environmentally friendly and wood saving, is worth promoting. However, at present, the price of this notebook is more than 80 yuan, which seems not very friendly to people; Although being able to repeatedly wipe is close to technology, in general, most people would rather throw it away after writing than heat it or wipe it with wet paper towels. After all, price factors and convenience restrict its promotion. At the same time, the use of apps is also troublesome, and the recognition of handwriting is not so perfect after photographing, Important data may not be saved in this way.

The author likes this new material to protect the environment and save energy. After consulting people around, I feel that this notebook is more convenient as a drawing tool, especially for those painters or designers who often need sketching, who have a lot of inspiration and need to write and draw at any time. With ELFIN BOOK, they will save a lot of expensive paper. So I would like to thank ELFIN BOOK and Love Computer, To be able to promote such a good environmental protection technology product to us, if there is a love that requires me to write a thousand times and ten thousand times, I would rather choose ELFIN BOOK!

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