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 permit precise adjustment of line width, and yet locate a few specialized uses, but highbrow pens such as the Rapidograph are more commonly used. broadminded types enlarge ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main enlightened types of pens can be categorized by the kind of writing tip or reduction upon 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 as regards suddenly on contact like 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 ordinary writing. (There are distinct ballpoint pens combining multiple colours in a single barrel; the writer or artist may sadden the tip following 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 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 designed to add together the openness of a ballpoint pen later than the mild "wet ink" effect of a fountain pen. Gel inks are open in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, energetic shades, shady colors, invisible ink, see-through effect, gleaming colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become easily reached 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 operate and gravity. The nib has no upsetting 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 taking into consideration a refillable reservoir may have a mechanism, such as a piston, to fascination ink from a bottle through the nib, or it may require refilling afterward an eyedropper. Refill reservoirs, furthermore known as cartridge converters, are easily reached for some pens which use disposable cartridges. A fountain pen can be used similar to 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 on new surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers past wide tips and shiny but transparent ink, called highlighters, are used to put emphasis on text that has already been written or printed. Pens expected for children or for the theater writing (as bearing in mind a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or supplementary 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 up more understandably 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 arrive in bright or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some additional form of marking or shaping, for example, in pottery. It can moreover be a computer addition that is used to help in navigating or providing more accurateness when using touchscreens. It usually refers to a narrow elongated staff, thesame to a enlightened ballpoint pen. Pens exist which contain a ballpoint tip upon one stop and this sort of touchscreen stylus on the other.
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