laser printer

Pencetak laser atau printer laser adalah pencetak untuk komputer yang menggunakan teknologi diode cahaya untuk mendapatkan partikel-partikel kecil toner dari cartridge ke kertas. Alat ini sering lebih ekonomis dibanding menggunakan tinta pencetak tinta.

Proses

Pencetak laser bekerja dengan melibatkan 7 langkah:

1. Pemrosesan Gambar Raster: peosesor dalam pencetak mengubah data untuk dicetak dari format apapun yang ada, ke bitmap halaman untuk dicetak - yang kemudian disimpan dalam memori gambar raster.
2. Pengisian: Sebuah muatan elektrostatik kemudian diproyeksikan ke drum fotosensitif berputar dalam pencetak.
3. Penulisan: Sinar laser diarahkan pada cermin poligon berputar, yang mengalihkan sinar itu ke drum fotosensitif. Data yang dirasterisasi kini dibaca, dan digunakan untuk mengendalikan apakah laser itu menyala atau tidak, karena sinar itu menyapu drum - di mana ketika sinar laser mengenai drum muatannya dibalik, menciptakan gambaran listrik laten di permukaan.
4. Perkembangan: Permukaan drum kemudian dipajankan ke partikel toner bermuatan negatif, yang ditarik ke daerah di mana laser itu menulis gambaran listrik tersimpan. Toner itu akan diusir oleh muatan negatif daerah di drum di mana sinar laser tak mengenainya, dan kemudian menghilangkan muatan.
5. Transfer: Drum sekarang diputar ke kertas, mengubah gambar dari drum ke kertas (untuk membantu proses ini ada pemutar bermuatan positif di belakang kertas, yang mendorong toner dari drum dan ke kertas).
6. Penggabungan: Kertas kemudian dilewatkan melalui penggabung, di mana pemutar itu menyiapkan panas dan tekanan untuk mengikat toner ke kertas.
7. Pembersihan: Sebuah tangkai tak bermuatan listrik dan lampu penembak menghilangkan toner dan semua muatan yang tersisa di drum (semua ini akan terjadi dalam 1 revolusi drum).

Stavolt

About Stavolt

Stavolt AG has been established in 1987 and is concentrating in the industrial battery business.

More than 20 years of experience in the field of energy storage as well as cooperation with renowned manufactures is allowing us to offer our customers the best and most suitable battery technology for every application.

Over the years we have supplied millions of battery cells to systems providing uninterruptible power to power plants, hospitals, telecom centers, solar/wind energy storage, data centers and many others.

Our batteries are used in some of the harshest environmental conditions, from supplying power to satellite ground stations in the tropics of the equator to maintaining power to telecom relay stations in freezing temperatures on mountain tops.

Vision and Mission

Stavolt AG commits to provide adapted and technologically advanced energy supply solutions with products and services in a smarter, simpler and more cost effective manner.
With our product offerings we aim to provide our customers with products adapted to customer requirements, high quality products and services, efficient and global supply chain, innovative technology.
 http://stavolt.com/

Kevin Dwi Jaya Pamungkas Sebo_12_9B

DOT MATRIX PRINTER

Dot matrix printing or impact matrix printing is a type of computer printing which uses a print head that runs back and forth, or in an up and down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter. However, unlike a typewriter or daisy wheel printer, letters are drawn out of a dot matrix, and thus, varied fonts and arbitrary graphics can be produced.
Dot matrix printers, like any impact printer, can print on multi-part stationery or make carbon-copies. Impact printers have one of the lowest printing costs per page. As the ink is running out, the printout gradually fades rather than suddenly stopping partway through a job. They are able to use continuous paper rather than requiring individual sheets, making them useful for data logging. They are good, reliable workhorses ideal for use in situations where printed content is more important than quality. The ink ribbon also does not easily dry out, including both the ribbon stored in the casing as well as the portion that is stretched in front of the print head; this unique property allows the dot-matrix printer to be used in environments where printer duty can be rare, for instance, as with a Fire Alarm Control Panel's output.
Impact printers create noise when the pins or typeface strike the ribbon to the paper.^[6] Sound-damping enclosures may have to be used in quiet environments. They can only print lower-resolution graphics, with limited color performance, limited quality, and lower speeds compared to non-impact printers. While they support fanfold paper with tractor holes well, single-sheet paper may have to be wound in and aligned by hand, which is relatively time-consuming, or a sheet feeder may be utilized which can have a lower paper feed reliability. When printing labels on release paper, they are prone to paper jams when a print wire snags the leading edge of the label while printing at its very edge. For text-only labels (e.g., mailing labels), a daisy wheel printer or band printer may offer better print quality and a lesser chance of damaging the paper.


Sumber: http://en.wikipedia.org/wiki/Dot_matrix_printing

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