A laser printer is an electronic
printer that uses laser technology. Laser lights are used to print high quality
of images and texts, and it uses electronic printing. The printer is classified
into two kinds one is impact, and the other is non-impact printers. The type of
printing that laser printer produce is images on the drum. The Laser printer
uses a non-impact photocopier technology.
Gray Starkweather first invented the
Laser printer in 1969. But IBM introduced the first laser printer in 1975 to
use it along with the mainframe computer. LaserJet printing technology was
first invented by Hewlett-Packard (HP) to modify Laser printing.
Read the following article to know
more about the Basic concept, working process, benefits, drawbacks of the
LaserJet Printers.
The Basic concept of the LaserJet
Printers
The basic concepts of the LaserJet
Printer are follows:
The toner CartridgeThis contains coloured or carbon oxide power which is positively and
negatively charged, and then it is melted onto the paper.
The
Drum
It is made of by metal products, and
it is cylindrical. This drum is inside the toner cartridge, and it is
photosensitive. The reflected laser light on the surface of the drum creates a
pattern to print on the pages.
The laser
The laser part of the printer
transfers the light/beam and the reflected light of the laser onto the drum to
paints the image on to the pages.
Supply of the power
This uses the more voltage to charge
the drum and transfer and hold on the pager.
The transport/transfer belts
It moves the pager from the printer
and passes it across the drum so that the toner can be transferred.
The fusing roller
This makes the printed pages hot, and
the ink /toner is melted on the pages forever.
Working Process of the laser printer
The working process of the laser
printer are as follows:
The
sanitation/cleaning
Before printing a new page, the
cleaning process will remove the excess information and torn from the drum.
The conditioning
The corona wire uniformly charges the
whole drum. This changes frequently and keeps it ready for the next process.
The writing
The process of writing starts the
paper passes through the printer and start sticking the images on the papers.
The result of this is clean copping the information.
The developing
The ink cartridge contains a positive
charge so that it will help to attract to the drum and realize the negative
charges.
The transferring
The ink is transferred to the paper
by the positive charges.
The fusing
The pressure and the heat of the
printer are applied to the paper so that the ink melts and pages are printed
properly.
Conclusion
If you want to invest less choose printer
under 5000 rupees. The lifetime of the LaserJet
printer is about five years, and the printer is part of life. The LaserJet
printers are useful for officers so that it prints faster and cleanly, cheaper
torn and larger cartridge.
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