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, like a nib dipped in ink. Ruling pens permit precise accommodation of lineage width, and still locate a few specialized uses, but perplexing pens such as the Rapidograph are more commonly used. advocate types add together ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main modern types of pens can be categorized by the kind of writing tip or tapering off 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 something like sharply on log on afterward paper. The ballpoint pen is usually obedient and comes in both reasonable and expensive types. It has replaced the fountain pen as the most common tool for indistinctive writing. (There are sure ballpoint pens combining multipart colours in a single barrel; the writer or player may depress the tip behind 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 append the openness of a ballpoint pen subsequently the smooth "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, vibrant shades, shady colors, invisible ink, see-through effect, shiny colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become within reach 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 pretense 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 bearing in mind a refillable reservoir may have a mechanism, such as a piston, to appeal ink from a bottle through the nib, or it may require refilling like an eyedropper. Refill reservoirs, in addition to known as cartridge converters, are available for some pens which use disposable cartridges. A fountain pen can be used taking into consideration permanent or non-permanent inks.
A felt-tip pen, or marker, has a spongy 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 kids for coloring and drawing. Larger types, often called "markers", are used for writing in larger sizes, often upon extra surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers considering wide tips and shining but transparent ink, called highlighters, are used to stress text that has already been written or printed. Pens expected for kids or for stand-in 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 long-lasting 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 taking place more suitably 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 shining or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some additional 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 truthfulness behind using touchscreens. It usually refers to a narrow lengthy staff, thesame to a militant 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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