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, next a nib dipped in ink. Ruling pens allow precise adjustment of lineage width, and nevertheless find a few specialized uses, but obscure pens such as the Rapidograph are more commonly used. highly developed types tote up ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main protester types of pens can be categorized by the nice of writing tip or point on the pen:
A ballpoint pen dispenses an oil-based ink by rolling a small difficult sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries regarding sharply on read with paper. The ballpoint pen is usually well-behaved and comes in both reasonable and expensive types. It has replaced the fountain pen as the most common tool for unspecified writing. (There are sure ballpoint pens combining complex colours in a single barrel; the writer or artist may depress the tip in imitation of the desired colour). Lszl Br patented the first commercially rich 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 intended to tote up the ease of use of a ballpoint pen when the serene "wet ink" effect of a fountain pen. Gel inks are to hand 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, bright colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become simple 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 discharge duty 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 when 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 following an eyedropper. Refill reservoirs, plus known as cartridge converters, are nearby for some pens which use disposable cartridges. A fountain pen can be used next 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 kids for coloring and drawing. Larger types, often called "markers", are used for writing in larger sizes, often on additional surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers in the manner of 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 intended for kids or for performing writing (as later a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or further 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 comprehensibly on dark or sleek 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 shining 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 next be a computer complement that is used to help in navigating or providing more exactness similar to using touchscreens. It usually refers to a narrow extended staff, similar to a radical ballpoint pen. Pens exist which contain a ballpoint tip upon one end and this sort of touchscreen stylus upon the other.
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