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, with a nib dipped in ink. Ruling pens permit correct accommodation of parentage width, and yet find a few specialized uses, but perplexing pens such as the Rapidograph are more commonly used. unbiased types append ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main modern types of pens can be categorized by the kind of writing tip or narrowing 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 almost shortly upon gain access to in imitation of paper. The ballpoint pen is usually reliable and comes in both reasonably priced and costly types. It has replaced the fountain pen as the most common tool for undistinguished writing. (There are certain ballpoint pens combining compound colours in a single barrel; the writer or player may distress the tip in the manner of the desired colour). Lszl Br patented the first commercially thriving 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 designed to intensify the openness of a ballpoint pen next the serene "wet ink" effect of a fountain pen. Gel inks are nearby in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, vibrant shades, shady colors, invisible ink, see-through effect, bright 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, later through the nib, due to capillary perform and gravity. The nib has no moving 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 past a refillable reservoir may have a mechanism, such as a piston, to pull ink from a bottle through the nib, or it may require refilling past an eyedropper. Refill reservoirs, as well as known as cartridge converters, are clear for some pens which use disposable cartridges. A fountain pen can be used bearing in mind remaining 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 upon further surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers considering wide tips and bright but transparent ink, called highlighters, are used to draw attention to text that has already been written or printed. Pens intended for kids or for stand-in writing (as behind a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or supplementary packages are usually remaining 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 in the works more straightforwardly 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 arrive in bright or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some extra form of marking or shaping, for example, in pottery. It can next be a computer supplement that is used to put up to in navigating or providing more truth following using touchscreens. It usually refers to a narrow extended staff, similar to a enlightened ballpoint pen. Pens exist which contain a ballpoint tip upon one stop and this sort of touchscreen stylus upon the other.
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