A pen is a common writing instrument used to apply ink to a surface, usually paper, for writing or drawing. Historically, reed pens, quill pens, and dip pens were used, in the manner of a nib dipped in ink. Ruling pens permit correct familiarization of origin width, and nevertheless find a few specialized uses, but technical pens such as the Rapidograph are more commonly used. broadminded types count up ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main radical types of pens can be categorized by the kind of writing tip or lessening on the pen:
A ballpoint pen dispenses an oil-based ink by rolling a little difficult sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries something like sharply upon entrance later paper. The ballpoint pen is usually honorable and comes in both reasonably priced and expensive types. It has replaced the fountain pen as the most common tool for ordinary writing. (There are distinct ballpoint pens combining compound colours in a single barrel; the writer or player may sadden the tip later than the desired colour). Lszl Br patented the first commercially well-off ballpoint pen.
A rollerball pen dispenses a water-based liquid or gel ink through a ball tip same to that of a ballpoint pen. The less-viscous ink is more easily absorbed by paper than oil-based ink, and the pen moves more easily across a writing surface. The rollerball pen was initially meant to swell the user-friendliness of a ballpoint pen behind the serene "wet ink" effect of a fountain pen. Gel inks are reachable in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, thriving shades, shady colors, invisible ink, see-through effect, shining colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become straightforward using cartridges of fountain pen ink.
A fountain pen uses water-based liquid ink delivered through a nib. The ink flows from a reservoir through a "feed" to the nib, later through the nib, due to capillary produce a result and gravity. The nib has no upsetting parts and delivers ink through a thin slit to the writing surface. A fountain pen reservoir can be refillable or disposable; the disposable type is called an ink cartridge. A pen taking into consideration a refillable reservoir may have a mechanism, such as a piston, to charm ink from a bottle through the nib, or it may require refilling considering an eyedropper. Refill reservoirs, afterward known as cartridge converters, are approachable for some pens which use disposable cartridges. A fountain pen can be used later than steadfast or non-permanent inks.
A felt-tip pen, or marker, has a porous tip of fibrous material. The smallest, finest-tipped felt-tip pens are used for writing upon paper. Medium-tipped felt-tips are often used by children for coloring and drawing. Larger types, often called "markers", are used for writing in larger sizes, often on new surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers past broad tips and shining but transparent ink, called highlighters, are used to highlight text that has already been written or printed. Pens meant for kids or for the theater writing (as following a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or new packages are usually permanent markers.
A gel pen uses ink in which pigment is suspended in a water-based gel. Because the ink is thick and opaque, it shows taking place more helpfully upon dark or smooth surfaces than the typical inks used in ballpoint or felt tip pens. Gel pens can be used for many types of writing and illustration. Gel pens often come in bright or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some further form of marking or shaping, for example, in pottery. It can after that be a computer addition that is used to encourage in navigating or providing more exactness behind using touchscreens. It usually refers to a narrow extended staff, same to a advanced ballpoint pen. Pens exist which contain a ballpoint tip upon one end and this sort of touchscreen stylus on the other.
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