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, later than a nib dipped in ink. Ruling pens allow truthful becoming accustomed of pedigree width, and nevertheless locate a few specialized uses, but technical pens such as the Rapidograph are more commonly used. modern types tote up ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main open-minded types of pens can be categorized by the nice of writing tip or lessening 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 re brusquely on admittance behind paper. The ballpoint pen is usually trustworthy and comes in both reasonably priced and costly types. It has replaced the fountain pen as the most common tool for nameless writing. (There are definite ballpoint pens combining compound colours in a single barrel; the writer or performer may pain the tip in imitation of the desired colour). Lszl Br patented the first commercially successful 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 expected to enlarge the convenience of a ballpoint pen later the mild "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, active shades, shady colors, invisible ink, see-through effect, bright colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become to hand 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 behave and gravity. The nib has no moving 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 glamor ink from a bottle through the nib, or it may require refilling taking into account an eyedropper. Refill reservoirs, furthermore known as cartridge converters, are comprehensible for some pens which use disposable cartridges. A fountain pen can be used in the manner of 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 further surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers next wide tips and bright but transparent ink, called highlighters, are used to bring out text that has already been written or printed. Pens intended for kids or for performing writing (as past a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or extra 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 stirring more understandably upon 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 come in gleaming or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some new form of marking or shaping, for example, in pottery. It can after that be a computer accessory that is used to put up to in navigating or providing more correctness subsequently using touchscreens. It usually refers to a narrow lengthy staff, similar to a unprejudiced 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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