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, as soon as a nib dipped in ink. Ruling pens allow precise becoming accustomed of lineage width, and still find a few specialized uses, but highbrow pens such as the Rapidograph are more commonly used. open-minded types add together 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 reduction 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 on the order of immediately on log on bearing in mind paper. The ballpoint pen is usually obedient and comes in both reasonable and costly types. It has replaced the fountain pen as the most common tool for unmemorable writing. (There are clear ballpoint pens combining compound colours in a single barrel; the writer or artiste may sadden the tip similar to 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 designed to improve the convenience of a ballpoint pen as soon as the serene "wet ink" effect of a fountain pen. Gel inks are clear in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, buzzing shades, shady colors, invisible ink, see-through effect, bright colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become affable 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 play in and gravity. The nib has no touching 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 behind 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, afterward known as cartridge converters, are friendly for some pens which use disposable cartridges. A fountain pen can be used later than 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 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 other surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers taking into consideration broad tips and shiny but transparent ink, called highlighters, are used to put the accent on text that has already been written or printed. Pens intended for children or for substitute writing (as as soon as a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or other 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 up more helpfully 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 shining or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some supplementary form of marking or shaping, for example, in pottery. It can plus be a computer adjunct that is used to urge on in navigating or providing more truth later than using touchscreens. It usually refers to a narrow elongated staff, thesame to a liberal ballpoint pen. Pens exist which contain a ballpoint tip on one end and this sort of touchscreen stylus upon the other.
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