We often hear that the album cover needs to do local UV, so what is UV technology? UV is actually the abbreviation of the English ultraviolet. In the printing industry, it is a special ink treatment process, also known as UV glazing process. The album cover after partial UV treatment can be more clear about the parts that need to be special. For example, after partial UV treatment, the logo part will have a sense of bulge and special brightness like varnish. After UV treatment, the text and pictures will be more textured and three-dimensional, It is more artistic and has the effect of finishing touch.

按過UV的面積來分，分為：整版UV和局部UV。

According to the area of UVs, it can be divided into full UVs and local UVs.

局部uv剛才已經舉了一個例子了，而整版uv效果一般不是很明顯的，從表面上看類似于過光油，但比過光油更加顯亮，但對印刷品表面并不起保護作用，而過光油卻對能印刷品的表面起一定的保護作用，比如防止刮花。用鼻子聞一聞，味道比較難聞，有一股塑膠的糊味。

An example has just been given for local UVs, but the overall UVs effect is generally not very obvious. On the surface, it is similar to the varnish, but more bright than the varnish, but it does not protect the surface of the printed matter, while the varnish plays a certain role in protecting the surface of the printed matter, such as preventing scratches. Smell it with your nose. It smells bad. It has a paste smell of plastic.

UV油墨也分好多種，這些油墨往往有特殊的光澤和肌理，有鏡面油墨、磨砂油墨、發(fā)泡油墨、皺紋油墨、錘紋油墨、彩砂油墨、雪花油墨、冰花油墨、珠光油墨、水晶油墨、鐳射油墨等等。我們常見的就是鏡面UV，從字面的意思上能看出，對印刷品某個部位局部UV后，表面像一面鏡子，用手摸上去很光滑，局部UV的地方和印刷品的其它部位相比感覺到有一個明顯的界限，比較有立體感。

UV inks can also be divided into several types. These inks often have special luster and texture, including mirror ink, frosting ink, foaming ink, wrinkle ink, hammer ink, color sand ink, snowflake ink, ice ink, pearl ink, crystal ink, laser ink, etc. Mirror UV is a common phenomenon. Literally speaking, the surface of a part of a printed product after partial UV is like a mirror, which is very smooth when you touch it with your hand. Compared with other parts of the printed product, there is a clear boundary between the local UV area and other parts of the printed product, which is more three-dimensional.

過UV所采用的設備叫UV光固機，原理就是通過紫外光照射來固化UV油墨。局部UV既可在覆膜后實施，也可在印刷品上直接UV，但為了突出局部UV的效果。一般是在印刷品覆膜后進行，且以覆亞膜居多，約占局部UV產品的80%左右。過UV后的印刷品一般很難再回收利用。

The equipment used for UV curing is called UV light curing machine, and the principle is to cure UV ink through UV light irradiation. Local UV can be implemented either after film covering or directly on printed matter, but in order to highlight the effect of local UV. Generally, it is carried out after the printing materials are covered with film, and most of them are covered with sub film, accounting for about 80% of local UV products. Printed materials after UV are generally difficult to recycle.