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, considering a nib dipped in ink. Ruling pens permit correct becoming accustomed of extraction width, and nevertheless locate a few specialized uses, but technical pens such as the Rapidograph are more commonly used. militant types improve ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main unbiased types of pens can be categorized by the nice of writing tip or lessening on the pen:
A ballpoint pen dispenses an oil-based ink by rolling a little hard sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries nearly quickly on way in in the same way as paper. The ballpoint pen is usually reliable and comes in both reasonably priced and expensive types. It has replaced the fountain pen as the most common tool for shadowy writing. (There are distinct ballpoint pens combining multiple colours in a single barrel; the writer or performer may depress the tip following the desired colour). Lszl Br patented the first commercially successful ballpoint pen.
A rollerball pen dispenses a water-based liquid or gel ink through a ball tip similar 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 expected to tote up the user-friendliness of a ballpoint pen later the mild "wet ink" effect of a fountain pen. Gel inks are easy to use in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, blooming shades, shady colors, invisible ink, see-through effect, gleaming colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become within reach 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, then through the nib, due to capillary con and gravity. The nib has no heartwarming 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 once 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 in the same way as an eyedropper. Refill reservoirs, next known as cartridge converters, are comprehensible for some pens which use disposable cartridges. A fountain pen can be used taking into consideration surviving or non-permanent inks.
A felt-tip pen, or marker, has a leaky 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 further surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers when wide tips and bright but transparent ink, called highlighters, are used to put the accent on text that has already been written or printed. Pens designed for children or for the theater writing (as similar to a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or other packages are usually enduring 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 occurring more conveniently on 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 small tool for some new form of marking or shaping, for example, in pottery. It can plus be a computer adjunct that is used to incite in navigating or providing more exactness in the same way as using touchscreens. It usually refers to a narrow outstretched staff, similar to a futuristic ballpoint pen. Pens exist which contain a ballpoint tip on one end and this sort of touchscreen stylus upon the other.
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