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 true familiarization of extraction width, and nevertheless locate a few specialized uses, but obscure pens such as the Rapidograph are more commonly used. militant types count ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main advanced 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 roughly rudely upon admittance once paper. The ballpoint pen is usually honorable and comes in both reasonably priced and expensive types. It has replaced the fountain pen as the most common tool for undistinguished writing. (There are positive ballpoint pens combining combination colours in a single barrel; the writer or artiste may afflict the tip as soon as 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 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 convenience of a ballpoint pen afterward the mild "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, booming shades, shady colors, invisible ink, see-through effect, gleaming 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, subsequently through the nib, due to capillary perform and gravity. The nib has no touching 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 subsequently a refillable reservoir may have a mechanism, such as a piston, to charisma ink from a bottle through the nib, or it may require refilling taking into consideration an eyedropper. Refill reservoirs, with known as cartridge converters, are easily reached for some pens which use disposable cartridges. A fountain pen can be used like steadfast or non-permanent inks.
A felt-tip pen, or marker, has a leaky 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 upon other surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers like broad tips and shiny but transparent ink, called highlighters, are used to emphasize text that has already been written or printed. Pens intended for kids or for drama writing (as taking into consideration a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or additional packages are usually surviving 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 happening more comprehensibly 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 shiny 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 in addition to be a computer complement that is used to support in navigating or providing more precision gone using touchscreens. It usually refers to a narrow outstretched staff, similar to a radical 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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