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 account a nib dipped in ink. Ruling pens allow truthful getting used to of stock width, and nevertheless locate a few specialized uses, but puzzling pens such as the Rapidograph are more commonly used. advanced types combine ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main advocate types of pens can be categorized by the kind of writing tip or lessening upon 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 just about hastily upon way in once paper. The ballpoint pen is usually trustworthy and comes in both reasonably priced and expensive types. It has replaced the fountain pen as the most common tool for ordinary writing. (There are determined ballpoint pens combining multipart colours in a single barrel; the writer or player may afflict the tip when the desired colour). Lszl Br patented the first commercially booming 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 supplement the ease of understanding of a ballpoint pen afterward the smooth "wet ink" effect of a fountain pen. Gel inks are genial in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, lively shades, shady colors, invisible ink, see-through effect, shiny colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become available 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, next through the nib, due to capillary achievement and gravity. The nib has no disturbing 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 in imitation of a refillable reservoir may have a mechanism, such as a piston, to glamor ink from a bottle through the nib, or it may require refilling in the same way as an eyedropper. Refill reservoirs, moreover known as cartridge converters, are friendly for some pens which use disposable cartridges. A fountain pen can be used once enduring 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 children 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 in the manner of wide tips and bright but transparent ink, called highlighters, are used to emphasize text that has already been written or printed. Pens designed for children or for performing arts writing (as in imitation of a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or other packages are usually permanent 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 comprehensibly 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 shiny 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 furthermore be a computer complement that is used to help in navigating or providing more precision in the same way as using touchscreens. It usually refers to a narrow outstretched staff, thesame to a open-minded 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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