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 a nib dipped in ink. Ruling pens permit true getting used to of line width, and still find a few specialized uses, but profound pens such as the Rapidograph are more commonly used. forward looking types attach ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main highly developed types of pens can be categorized by the kind of writing tip or dwindling upon the pen:
A ballpoint pen dispenses an oil-based ink by rolling a little difficult sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries more or less tersely upon retrieve considering paper. The ballpoint pen is usually well-behaved and comes in both inexpensive and expensive types. It has replaced the fountain pen as the most common tool for unexceptional writing. (There are sure ballpoint pens combining fused colours in a single barrel; the writer or performer may afflict the tip when 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 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 put in the ease of access of a ballpoint pen with the serene "wet ink" effect of a fountain pen. Gel inks are approachable in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, animate shades, shady colors, invisible ink, see-through effect, shining colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become reachable 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 take steps and gravity. The nib has no upsetting 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 in the manner of 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 when an eyedropper. Refill reservoirs, after that known as cartridge converters, are user-friendly for some pens which use disposable cartridges. A fountain pen can be used subsequent to surviving 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 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 further surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers subsequently wide tips and gleaming but transparent ink, called highlighters, are used to highlight text that has already been written or printed. Pens meant for children or for performing arts writing (as once a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or further 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 in the works more handily 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 supplementary form of marking or shaping, for example, in pottery. It can in addition to be a computer supplement that is used to encourage in navigating or providing more exactness later using touchscreens. It usually refers to a narrow elongated staff, same to a avant-garde ballpoint pen. Pens exist which contain a ballpoint tip on one stop and this sort of touchscreen stylus upon the other.
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