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An inkjet printer is a computer printing that recreates a digital image and produces hard copy by spraying droplets of ink onto paper, plastic, or other substrates. Inkjet printers are the most commonly used type of printer, and range from small inexpensive consumer models to expensive professional machines. A typical inkjet printer can produce copy with a resolution of at least 300 dots per inch ( dpi ). Some inkjet printers can make full color hard copies at 600 dpi or more.
How Does an Inkjet Printer Work?
In the inkjet printing mechanism, the print head has several tiny nozzles, also called jets. As the paper moves past the print head, the nozzles spray ink onto it, forming the characters and images. An inkjet printer can produce from 100 to several hundred pages, depending on the nature of the hard copy, before the ink cartridges must be replaced. There is usually one black ink cartridge and one so-called color cartridge containing ink in primary pigments (cyan, magenta, and yellow). Some inkjet printers use a single cartridge with cyan, magenta, yellow, and black ink. A few models require separate cartridges for each primary pigment, along with a black ink cartridge.
Advantages
Initial Cost
Ink-Jet printers are one of the lowest cost products on the market. In the past, the quality of low inkjet printers have matched with its price. It means that when you buy a cheap inkjet printer, the quality of the images are not good. However, ink-jet technology has developed and improved so remarkably that the cheapest inkjet printers can create images with good quality.
Quality
Today you can create images or documents with high quality by Inkjet printers. They used to use blurry effect to the texts or images before but with the powerful technology now, you are able to create more effects so that your images are more vivid and have the best quality.
Space
The ink jet printers have suitable size to put on the desk on your office or a small room in your home to serve to your work.
Time
The inkjet printer do not require time to heat the machine system before print. They have also shorter delay between the document being sent to print and the beginning of a print process.
Disadvantages
Cartridge Cost
You can buy a cheap inkjet printer first but with the replacement of the cartridges in a long time, the cartridge cost can exceed the machine cost.
Speed
You can only use ink-jet printer to create little volumes of documents only because inkjet printer is slower than laser one.
Ink
The replacement of cartridges causes some unexpected problems in the printing process. The most trouble we commonly face is when the printers are clogged with ink. There are cleaning cycles in inkjet printers to run but you must replace cartridges after used many times. Some companies offer service of refilling cartridges and you don’t need to buy new ones. The cost is down but it takes a lot of time to transfer cartridges.
Moisture
After creating images or documents,we must wait until those dry. Sometimes it can delay our delivery process. There’s some risk if our documents smudge before drying.
Features of an Inkjet printer
Printhead Design
Inkjet printers use one of two basic types of printhead technologies. Thermal designs heat the printhead's nozzles to push tiny ink bubbles out onto the paper, while piezo-electric designs apply electricity to a crystal, altering the nozzle's shape to release ink droplets, which can vary in size. Because piezo-electric printheads don't require heat to force out their ink, they may provide greater print speeds and hardware durability than their thermal equivalents. In addition, smaller ink droplets can result in better image reproduction.
Ink Type
Inkjet printers rely either on dye or pigment-based inks. Dye-based inks produce a wide range of brilliant colors, allow for smaller ink droplets and cost less than pigment-based inks, but their absorption into paper can blur the reproduction of fine details. Additionally, dye-based inks tend to fade more quickly than pigment-based inks. Their water-soluble coloring agents produce output that offers little water resistance. For less vulnerability to water damage and fading, pigment-based inks set on the surface of paper rather than sinking into it, but they tend to reproduce a narrower color gamut.
Ink Usage
Inexpensive inkjet printers tend to use only two ink cartridges: one for black, and one for cyan, magenta and yellow. This is inefficient if one of the three colors runs out before the other two, forcing you to jettison a partially viable cartridge. Higher-end printers have individual ink tanks or cartridges for each ink color, photo printers may use eight or 10 inks to produce subtle color variations. The quality of image reproduction can depend not just on printhead and ink type, but on how many inks the printer uses, and whether it includes options for optimal black output on papers with different surface finishes, typically glossy or matte.
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