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, taking into consideration a nib dipped in ink. Ruling pens permit exact familiarization of heritage width, and still locate a few specialized uses, but obscure pens such as the Rapidograph are more commonly used. unprejudiced types combine ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main forward looking types of pens can be categorized by the nice of writing tip or dwindling upon 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 regarding rudely on log on following paper. The ballpoint pen is usually well-behaved and comes in both reasonably priced and costly types. It has replaced the fountain pen as the most common tool for unsigned writing. (There are sure ballpoint pens combining combination colours in a single barrel; the writer or artist may afflict the tip in imitation of 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 thesame 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 insert the convenience of a ballpoint pen similar to the smooth "wet ink" effect of a fountain pen. Gel inks are comprehensible in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, animate shades, shady colors, invisible ink, see-through effect, shining colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become clear 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, subsequently through the nib, due to capillary feat 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 similar to a refillable reservoir may have a mechanism, such as a piston, to magnetism ink from a bottle through the nib, or it may require refilling in imitation of an eyedropper. Refill reservoirs, next known as cartridge converters, are approachable for some pens which use disposable cartridges. A fountain pen can be used subsequently surviving or non-permanent inks.
A felt-tip pen, or marker, has a permeable 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 kids for coloring and drawing. Larger types, often called "markers", are used for writing in larger sizes, often upon other surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers similar to broad tips and bright but transparent ink, called highlighters, are used to bring out text that has already been written or printed. Pens designed for kids or for interim writing (as next a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or extra packages are usually long-lasting 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 stirring more clearly on dark or 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. Gel pens often arrive in shiny or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some supplementary form of marking or shaping, for example, in pottery. It can as well as be a computer auxiliary that is used to urge on in navigating or providing more exactness later using touchscreens. It usually refers to a narrow elongated 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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