How Does A Laser Printer Work – A water Cooler Explanation
How Does A Laser Printer Work – A water Cooler Explanation

How Does A Laser Printer Work – A water Cooler Explanation

A laser printer is a very effective and indigenous part of a home office or business today. Across the globe, a laser printer is favored by business and organizations and thanks to their advanced all-around technical performance. Over three decades, it has been developed and released much better than other printer types. how-does-laser-printer-workNowadays a laser printer can print out pages faster than inkjet or matrix printer. The best laser printer also beats most in the terms of printing accuracy with both word and graphic precisely printed.

It is still unbeatable for high-quality text print, class-leading print speed, and high-volume workloads. A laser printer is transferred the way we print, first of all, delivered on high-quality black and white printing for every business, next illuminative a desktop-publishing revolution and now reaching down to the small office and home. Recently it has been evolving beyond recognition and offered to full-color output. Let’s take a look at how a laser printer works.

Printer Controller Receives Page Data and Creates Raster Image

The recent past year laser printer has become more popular for the mastermind working process. It uses the high-intensity light to map out and an exact copy of printed pages. It receives electronic data from a laptop or PC to operate the text and images to be printed on to the sheet of paper.

While you command to print, the PC encodes the data using ‘Printer Command Language’, ‘Adobe Postscript’ language or ‘XML Page Specification’ to narrate the entire page and tells the printer what text to print, where to print it and how to style it, and breaking down any graphic elements into PCL codes. These whole data are received by the printer controller. The Controller reads the information and organizes the page according to orders. Now the ‘Raster Image Processors’ (RIP) embedded within the printer to convert it into a bitmap or raster image. This raster image is mortally saved in print memory.

Negatively and Positively Charged

The Cylindrical drum is negatively charged by a primary expenditure of high voltage roller or corona wire. Now the laser is started and working through the provision of lenses and mirrors. At that time, carved the images, which is created by the ‘Raster Image Processors’ on to the drum surfaces. The laser printer is working with the rolling photoconductive drum, that may charge on its surface until exposed to light. The areas of this printer are struck by the laser have a more positive charge.


The meaning of this, while the toner transferred drum is negatively charged, the sticks to the area is marked by the laser and falls in the areas remain negatively charged. Now it is time to toner transferred from the surface of the drum to the paper by using a transfer roller. This applies a positive charge to the underside of the paper and attracting the negatively charged toner from the drum. In this topic discussion, let us assume that the drum is positively charged.

Laser Draws Image of Photosensitive Surface

Each Laser printer uses a laser beam that can enable to form of highly focused, precise, and intense beams of light. This laser beam has a goal at rotating polygonal mirrors. It has available the rolling drum which is exposed to the light output of the laser. It is a really very hard system to made up of mirrors and lenses. The Laser beam draws the bitmap image on the surfaces of the drum.

Following the info fed to the raster processor, the laser photon stream hit upon the moving surface of the photosensitive drum. When the photons hit into the drum, it has got the negative charged on the surface of the drum. Step by step, the whole bitmap or raster image processor is etched onto the drum in the form of a negative electrostatic image! Imagine the glass windows surface coated with dust.

Different Cartridge Between Monochrome and Color Laser Printer

The monochrome and color laser printer both use the same process – but with only a key feature. A black and white laser printer has just one drum and single toner cartridge. On the other hand, the color laser printer has been available four special toner cartridges, these are cyan, magenta, yellow and black.

This toner charge roller is associated with mechanisms each with color and mono drum. The latest Xeno-graphic printing technique helps every user etches an electrostatic image. The best innovative laser printer delivered on crisp printed pages at a phenomenal speed!

Fuser Unit

It is a heated roller on toner paper. The Fuser unit melts the plastic toner particles onto the pages it passes through. It’s a stick-on paper and delivered with a printed paper that is the exact physical copy of the soft copy on the computer. While this unit has come out of the printer, It has no longer in powder form so makes sure that the toner doesn’t smudge.

About Ashik Mollah

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