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A highlighter, also called a fluorescent pen, is a type of writing device used to bring attention to sections of text by marking them with a vivid, translucent colour. [1] A typical highlighter is fluorescent yellow, with the color coming from pyranine. [2] Different compounds, such as rhodamines (Rhodamine 6GD, Rhodamine B) are used for other colours. [3]
A highlighter is a felt-tip marker filled with transparent fluorescent ink instead of black or opaque ink. The first highlighter was invented by Dr. Frank Honn in 1962 [4] and produced by Carter's Ink Company, using the trademarked name Hi-Liter. Avery Dennison Corporation now owns the brand, having acquired Carter's in 1975. [5]
Many highlighters come in bright, often fluorescent and vibrant colors. Being fluorescent, highlighter ink glows under black light. [6] The most common color for highlighters is yellow, but they are also found in orange, red, pink, purple, blue, and green varieties. Some yellow highlighters may look greenish in colour to the naked eye. Yellow is the preferred color to use when making a photocopy as it will not produce a shadow on the copy.
Highlighters are available in multiple forms, including some that have a retractable felt tip or an eraser on the end opposite the felt. Other types of highlighters include the trilighter, a triangularly-shaped pen with a different-coloured tip at each corner, and ones that are stackable. There are also some forms of highlighters that have a wax-like quality similar to an oil pastel.
"Dry highlighters" (occasionally called "dry line highlighters") have an applicator that applies a thin strip of highlighter tape (physically similar to audio tape or correction tape) instead of a felt tip. Unlike standard highlighters, they are easily erasable. They are different from "dry mark highlighters", which are sometimes advertised as being useful for highlighting books with thin pages.
"Gel highlighters" contain a gel stick rather than a felt tip. The gel does not bleed through paper or become dried out in the pen as other highlighters' inks may, which renders them useless.
"Liquid Highlighters" in a range of colours are also available, and because they put more ink on a page when highlighting, they make words stand out more than with non-liquid types. Also the fact that more highlighting ink is put on the page with liquid highlighters means that the highlighting ink is much more resistive to fading with age.
"Pastel Highlighters" use pastel dyes instead of fluorescent dyes.
Some word processing software can simulate highlighting by using a technique similar to reverse video on some terminals. Some forms of syntax highlighting may also be displayed in the style of a highlighter pen, with a bright or pastel background to the text. Some web browser extensions also enables users to create digital highlights on websites and online PDFs.
Ink is a gel, sol, or solution that contains at least one colorant, such as a dye or pigment, and is used to color a surface to produce an image, text, or design. Ink is used for drawing or writing with a pen, brush, reed pen, or quill. Thicker inks, in paste form, are used extensively in letterpress and lithographic printing.
A pen is a common writing instrument that applies ink to a surface, usually paper, for writing or drawing. Early pens such as reed pens, quill pens, dip pens and ruling pens held a small amount of ink on a nib or in a small void or cavity that had to be periodically recharged by dipping the tip of the pen into an inkwell. Today, such pens find only a small number of specialized uses, such as in illustration and calligraphy. Reed pens, quill pens and dip pens, which were used for writing, have been replaced by ballpoint pens, rollerball pens, fountain pens and felt or ceramic tip pens. Ruling pens, which were used for technical drawing and cartography, have been replaced by technical pens such as the Rapidograph. All of these modern pens contain internal ink reservoirs, such that they do not need to be dipped in ink while writing.
Staining is a technique used to enhance contrast in samples, generally at the microscopic level. Stains and dyes are frequently used in histology, in cytology, and in the medical fields of histopathology, hematology, and cytopathology that focus on the study and diagnoses of diseases at the microscopic level. Stains may be used to define biological tissues, cell populations, or organelles within individual cells.
A marker pen, fine liner, marking pen, felt-tip pen, felt pen, flowmarker, sign pen, vivid, flomaster, texta, sketch pen, koki or simply marker is a pen which has its own ink source and a tip made of porous, pressed fibers such as felt. A marker pen consists of a container and a core of an absorbent material that holds the ink. The upper part of the marker contains the nib that was made in earlier times of a hard felt material, and a cap to prevent the marker from drying out.
A permanent marker or indelible marker is a type of marker pen that is used to create permanent or semi-permanent writing on an object.
Thermochromism is the property of substances to change color due to a change in temperature. A mood ring is an excellent example of this phenomenon, but thermochromism also has more practical uses, such as baby bottles which change to a different color when cool enough to drink, or kettles which change color when water is at or near boiling point. Thermochromism is one of several types of chromism.
Pentel Co., Ltd. is a privately-held Japanese manufacturing company of stationery products. The name comes from one of their first widely known products and is a portmanteau of the English words pen and pastel. Pentel is also the inventor of non-permanent marker technology. Most Pentel products are manufactured in Japan, Taiwan, Korea, Mexico, and France.
A writing implement or writing instrument is an object used to produce writing. Writing consists of different figures, lines, and or forms. Most of these items can be also used for other functions such as painting, drawing and technical drawing, but writing instruments generally have the ordinary requirement to create a smooth, controllable line.
Roller ball pens or roll pens are pens which use ball point writing mechanisms with water-based liquid or gelled ink, as opposed to the oil-based viscous inks found in ballpoint pens. These less viscous inks, which tend to saturate more deeply and more widely into paper than other types of ink, give roller ball pens their distinctive writing qualities. The writing point is a tiny ball, usually 0.5 or 0.7 mm in diameter, that transfers the ink from the reservoir onto the paper as the pen moves.
Rhodamine B is a chemical compound and a dye. It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with fluorometers.
A gel pen uses ink in which pigment is suspended in a water-based gel. Because the ink is thick and opaque, it shows up more clearly on slick surfaces than the typical inks used in ballpoint or felt tip pens. Gel pens can be used for many types of writing and illustration.
Shower gel is a specialized liquid product used for cleaning the body during showers. Not to be confused with liquid soaps, shower gels, in fact, do not contain saponified oil. Instead, it uses synthetic detergents derived from either petroleum or plant sources.
Eye liner or eyeliner is a cosmetic used to define the eyes. It is applied around the contours of the eye(s). It is often used to create various aesthetic effects.
Zebra Co., Ltd. is a Japanese manufacturer of writing instruments, established in 1914 by Tokumatsu Ishikawa.
Parchment craft, also known as Pergamano, is the art of embellishing and decorating parchment paper through the use of techniques such as embossing, perforating, stippling, cutting and coloring.
Royal Talens is a Dutch company located in Apeldoorn that specializes in art materials. The company produces and markets its own products, apart from commercializing other licensed brands, such as Van Gogh, Rembrandt, and Bruynzeel. Products commercialised include acrylic paints, oil paints, watercolor paintings, brushes, markers, inks, pastels, pencils, pens, gouache, canvas, papers.
Nail art is a creative way to paint, decorate, enhance, and embellish nails. It is a type of artwork that can be done on fingernails and toenails, usually after manicures or pedicures.
Optical air sensors center around the detection of some form of light created by a chemical process, in order to identify or measure amounts of individual molecules. Portable sensors are specifically sensors that are easy to transport and use in the field.
The conservation and restoration of paintings is carried out by professional painting conservators. Paintings cover a wide range of various mediums, materials, and their supports. Painting types include fine art to decorative and functional objects spanning from acrylics, frescoes, and oil paint on various surfaces, egg tempera on panels and canvas, lacquer painting, water color and more. Knowing the materials of any given painting and its support allows for the proper restoration and conservation practices. All components of a painting will react to its environment differently, and impact the artwork as a whole. These material components along with collections care will determine the longevity of a painting. The first steps to conservation and restoration is preventive conservation followed by active restoration with the artist's intent in mind.
Media related to Highlighters at Wikimedia Commons
The dictionary definition of highlighter at Wiktionary