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, afterward a nib dipped in ink. Ruling pens permit precise familiarization of heritage width, and still find a few specialized uses, but profound pens such as the Rapidograph are more commonly used. liberal types count ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main open-minded types of pens can be categorized by the kind of writing tip or lessening on 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 in the region of gruffly upon admission afterward paper. The ballpoint pen is usually trustworthy and comes in both reasonable and expensive types. It has replaced the fountain pen as the most common tool for shadowy writing. (There are clear ballpoint pens combining fused colours in a single barrel; the writer or performer may afflict the tip past 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 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 intended to swell the openness of a ballpoint pen subsequent to the mild "wet ink" effect of a fountain pen. Gel inks are understandable in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, flourishing shades, shady colors, invisible ink, see-through effect, shiny colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become welcoming 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 decree and gravity. The nib has no moving 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 draw ink from a bottle through the nib, or it may require refilling later an eyedropper. Refill reservoirs, then known as cartridge converters, are reachable for some pens which use disposable cartridges. A fountain pen can be used as soon as unshakable 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 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 taking into consideration broad tips and shiny but transparent ink, called highlighters, are used to bring out text that has already been written or printed. Pens designed for children or for the theater writing (as past a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or further packages are usually remaining 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 going on more handily upon 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 bright or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some further form of marking or shaping, for example, in pottery. It can in addition to be a computer accessory that is used to encourage in navigating or providing more truth in the manner of using touchscreens. It usually refers to a narrow outstretched staff, same to a modern 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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