The highlighter pen is a new pen used for marking in recent years. It uses thicker and lighter ink to cover the key parts to make marks. After the mark is made, the text is not obscured at a glance. Fluorescent pens have a fluorescent agent that emits a fluorescent effect when exposed to ultraviolet light (sunlight, fluorescent, and mercury lamps), emitting white light, which makes the color look glaring and fluorescent. Often used for office learning.
The water-based highlighter pen is a new type of marker used in recent years. The pen is covered with thicker and lighter ink to cover the key parts. After the mark is made, the blocked text is clear at a glance. The most important role is: a document marked with a highlighter. When copying, you can't see that you have ever made a mark! The principle of its key UV fluorescent ink is to add a visible fluorescent complex with UV excitation to the ink. Through the absorbed light energy, the energy level transition of the atom is generated, and then the additional energy absorbed is released. The anti-counterfeiting feature is to emit red, yellow, green, and blue (400 nm to 800 nm) visible light under ultraviolet light (200 nm to 400 nm). The ink is colored and colorless, and has long wave (365nm) and short wave (254nm). The fluorescent pigment is an organic complex, finely ground, and has high luminosity, usually colorless or light white, in ultraviolet light. Under the irradiation of (200 nm to 400 nm), visible light of various colors (400 nm to 800 nm) is exhibited. According to the wavelength of the excitation light source, it can be divided into short-wave ultraviolet excitation phosphor (excitation wavelength is 254nm) and long-wave ultraviolet excitation pigment (excitation wavelength is 365nm). Fluorescent pens have a fluorescent agent that emits a fluorescent effect when exposed to ultraviolet light (sunlight, fluorescent, and mercury lamps), emitting white light, which makes the color look glaring and fluorescent. There are also colorless highlighters that can be hidden. After writing, there is no color. After the purple light behind the pen is illuminated, the written content can be displayed.
Fluorescent pens have a fluorescent agent that emits a fluorescent effect when exposed to ultraviolet light (sunlight, fluorescent, and mercury lamps), emitting white light, which makes the color look glaring and fluorescent. The fluorescence of the highlighter is different from the fluorescence principle of our watch and glow stick. The glow stick is internally radioactive, and the generated radiation excites the peripheral phosphor to emit light, so they can emit light without any ultraviolet rays at night. The highlighter will only fluoresce when it is exposed to ultraviolet light. You can see the highlighter's handwriting close to the mosquito trap and the money detector.
Is the highlighter smell toxic?
The highlighter is divided into two types, water and oil. Water-based pens are similar to colored pens and are non-toxic, but not easy to dry. And the coverage is not good, the surface of some items can't be written, and the two colors will look dirty when stacked.
The oily pen is a synthetic solvent that dissolves in alcohol, and some sensitive people may smell dizzy when they smell it. But it is easy to write and easy to work with, coverage is good, and the price is cheaper.
There are also some highlighters with fruity notes.
The principle of a highlighter is to generate energy-level transitions of atoms by absorbing the energy of light, and then release the extra energy absorbed. Some fluorescent agents are added to the highlighter. Some fluorescent substances are toxic, have potential carcinogenic ingredients, are harmful to humans for long-term use, and are inexpensive. In order to reduce costs, some small workshops use toxic fluorescent agents as raw materials for highlighters. In addition, because the fluorescent pen contains a large amount of fluorescent agent, long-term use will seriously affect the child's vision.
Fluorescent pen tricks
When the presentation is played, if the user is accustomed to circle with the mouse, the WPS demo is a highlighter for the user, and a “highlighter” aid is provided to help explain. Users can choose a ballpoint pen, a watercolor pen or a highlighter and define different ink colors and different drawing shapes to easily circle and mark in the presentation. The following will introduce the user to the use of the highlighter.
Highlighter selection: During the presentation of the presentation, right-click anywhere in the presentation to bring up the drop-down menu, select the "Pointer Type" menu item, and then select "Highlighter" in the drop-down menu of the pointer type. Select the line type from the Draw Shape menu and select the desired color in the Ink Color menu.
Highlighting and labeling of the highlighter: Use your highlighter to circle and mark anywhere in the presentation.
Ink retention: If you circle and annotate during the playback of the document, the WPS presentation will prompt you to save the ink annotation when you exit the playback mode. Click the “Keep” button and the WPS presentation saves the ink to the WPS presentation. In the slideshow page. Click the "Abandon" button and the ink will not be saved in the presentation.
Highlighter Quality Identification
Highlighters are often used for painting and marking. When selecting, you can stack two translucent report papers or type papers together, write a few words on the top piece of paper with a highlighter, pay attention to the light and heavy, then turn over and check, the good quality highlighter is on the top There should be no color penetration on the back of the paper, and there should be no handwriting on the next piece of paper.