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, behind a nib dipped in ink. Ruling pens permit exact adjustment of lineage width, and yet find a few specialized uses, but rarefied pens such as the Rapidograph are more commonly used. ahead of its time types attach ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main radical types of pens can be categorized by the nice of writing tip or narrowing 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 all but snappishly on admission later paper. The ballpoint pen is usually well-behaved and comes in both reasonably priced and costly types. It has replaced the fountain pen as the most common tool for run of the mill writing. (There are definite ballpoint pens combining combined colours in a single barrel; the writer or artiste may hurt 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 thesame 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 meant to include the convenience of a ballpoint pen bearing in mind the smooth "wet ink" effect of a fountain pen. Gel inks are available in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, bustling shades, shady colors, invisible ink, see-through effect, bright colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become clear 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, later through the nib, due to capillary produce a result and gravity. The nib has no distressing 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 same way as a refillable reservoir may have a mechanism, such as a piston, to attraction ink from a bottle through the nib, or it may require refilling considering an eyedropper. Refill reservoirs, with known as cartridge converters, are simple for some pens which use disposable cartridges. A fountain pen can be used bearing in mind unshakable 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 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 as soon as broad tips and shiny but transparent ink, called highlighters, are used to put emphasis on text that has already been written or printed. Pens designed for children or for temporary writing (as when a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or supplementary packages are usually enduring 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 helpfully on 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 gleaming or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a small tool for some other form of marking or shaping, for example, in pottery. It can plus be a computer accessory that is used to support in navigating or providing more precision when using touchscreens. It usually refers to a narrow outstretched staff, similar to a militant ballpoint pen. Pens exist which contain a ballpoint tip upon one end and this sort of touchscreen stylus upon the other.
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