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 imitation of a nib dipped in ink. Ruling pens allow true adaptation of heritage width, and still find a few specialized uses, but rarefied pens such as the Rapidograph are more commonly used. advocate types tote up ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main modern types of pens can be categorized by the nice of writing tip or dwindling on the pen:
A ballpoint pen dispenses an oil-based ink by rolling a small hard sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries vis--vis gruffly upon gate considering paper. The ballpoint pen is usually honorable 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 determined ballpoint pens combining fused colours in a single barrel; the writer or artiste may sadden the tip when the desired colour). Lszl Br patented the first commercially flourishing 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 intended to augment the convenience of a ballpoint pen afterward the smooth "wet ink" effect of a fountain pen. Gel inks are user-friendly 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 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, then through the nib, due to capillary proceed and gravity. The nib has no heartwarming parts and delivers ink through a skinny slit to the writing surface. A fountain pen reservoir can be refillable or disposable; the disposable type is called an ink cartridge. A pen later than a refillable reservoir may have a mechanism, such as a piston, to appeal ink from a bottle through the nib, or it may require refilling subsequently an eyedropper. Refill reservoirs, in addition to known as cartridge converters, are clear for some pens which use disposable cartridges. A fountain pen can be used similar to surviving 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 on 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 additional surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers gone broad tips and shining but transparent ink, called highlighters, are used to bring out text that has already been written or printed. Pens designed for kids or for drama writing (as bearing in mind a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or new 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 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 additional form of marking or shaping, for example, in pottery. It can along with be a computer supplement that is used to incite in navigating or providing more exactness bearing in mind using touchscreens. It usually refers to a narrow extended staff, similar to a campaigner ballpoint pen. Pens exist which contain a ballpoint tip on one end and this sort of touchscreen stylus on the other.
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