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 correct adaptation of line width, and nevertheless locate a few specialized uses, but highbrow pens such as the Rapidograph are more commonly used. objector types add up ballpoint, rollerball, fountain and felt or ceramic tip pens.
The main highly developed 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 difficult sphere, usually 0.51.2 mm and made of brass, steel, or tungsten carbide. The ink dries something like sharply on entrance bearing in mind paper. The ballpoint pen is usually obedient and comes in both inexpensive and costly types. It has replaced the fountain pen as the most common tool for everyday writing. (There are clear ballpoint pens combining complex colours in a single barrel; the writer or artiste may afflict the tip as soon as the desired colour). Lszl Br patented the first commercially flourishing 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 meant to count the openness of a ballpoint pen subsequent to the smooth "wet ink" effect of a fountain pen. Gel inks are affable in a range of colors, including metallic paint colors, glitter effects, neon, blurred effects, saturated colors, pastel tones, thriving shades, shady colors, invisible ink, see-through effect, shiny colors, and glow-in-the-dark effects. Refillable rollerball pens have recently become simple 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 deed and gravity. The nib has no touching 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 draw ink from a bottle through the nib, or it may require refilling bearing in mind an eyedropper. Refill reservoirs, as a consequence known as cartridge converters, are available for some pens which use disposable cartridges. A fountain pen can be used later than steadfast 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 new surfaces such as corrugated boxes, whiteboards and for chalkboards, often called "liquid chalk" or "chalkboard markers". Markers with broad tips and gleaming but transparent ink, called highlighters, are used to make more noticeable text that has already been written or printed. Pens meant for kids or for the theater writing (as with a whiteboard or overhead projector) typically use non-permanent inks. Large markers used to label shipping cases or other packages are usually steadfast 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 simply 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 shining or neon colors.
A stylus pen, plural styli or styluses, is a writing utensil or a little tool for some supplementary form of marking or shaping, for example, in pottery. It can furthermore be a computer complement that is used to support in navigating or providing more truthfulness past using touchscreens. It usually refers to a narrow elongated staff, thesame to a open-minded ballpoint pen. Pens exist which contain a ballpoint tip upon one stop and this sort of touchscreen stylus upon the other.
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