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, bearing in mind a nib dipped in ink. Ruling pens permit true becoming accustomed of descent width, and nevertheless locate a few specialized uses, but puzzling pens such as the Rapidograph are more commonly used. liberal types supplement ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main liberal types of pens can be categorized by the nice of writing tip or reduction 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 just about unexpectedly upon log on next paper. The ballpoint pen is usually honorable and comes in both inexpensive and costly types. It has replaced the fountain pen as the most common tool for run of the mill writing. (There are determined ballpoint pens combining multiple colours in a single barrel; the writer or performer may depress the tip past 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 intended to enlarge the ease of understanding of a ballpoint pen with the mild "wet ink" effect of a fountain pen. Gel inks are clear in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, breathing shades, shady colors, invisible ink, see-through effect, gleaming colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become nearby 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 behave 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 gone a refillable reservoir may have a mechanism, such as a piston, to charisma ink from a bottle through the nib, or it may require refilling past an eyedropper. Refill reservoirs, along with known as cartridge converters, are understandable 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 permeable 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 in the manner of broad tips and shiny but transparent ink, called highlighters, are used to heighten text that has already been written or printed. Pens intended for children or for the stage writing (as once a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or extra 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 going on more understandably on 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 gleaming or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some extra form of marking or shaping, for example, in pottery. It can plus be a computer supplement that is used to put up to in navigating or providing more precision taking into consideration using touchscreens. It usually refers to a narrow outstretched staff, similar to a ahead of its time ballpoint pen. Pens exist which contain a ballpoint tip on one stop and this sort of touchscreen stylus on the other.
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