how a laser printer works

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How Your Laser Printer Works

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Definition of laser printer:

laser printerlaser print¦er  NOUNa printer linked to a computer producing good-quality printed material by using a laser to form a pattern of electrostatically charged dots on a light-sensitive drum, which attract toner (or dry ink powder). The toner is transferred to a piece of paper and fixed by a heating process.

Oxford Dictionary

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Your PC ‘talks’ to your printer through this Controller translating printing data through a Raster Image Processor (RIP) converting your printed work into millions of little dots.

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The Imaging Drum, or Photoconductor,  is a specially coated cylinder that has a positive or negative charge.

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3The Charging Roller sends a positive or negative charge to the Imaging Drum.

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44The Laser Beam switches on and off intermittently.

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This Rotating Mirror deflects the laser beam onto the drum, scanning the charged drum reversing the charge of the dots that are to be printed.

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The Developer Roller  is coated in charged toner particles  from the Toner Cartridge.

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The Toner Hopper , part of the Toner Cartridge, feeds toner particles onto the Developer Roller.

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The Transfer Belt  or Roller Assembly  draws paper inside from the paper tray .

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 The Paper Tray.

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 A Transfer Roller  applies a charge opposite the toner's, to the paper.

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 A Cleaning Blade cleans the drum.

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Finally the Fuser, a heat roller and a pressure roller, melts the toner onto the page.

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Finally the Fuser, a heat roller and a pressure roller, melts the toner onto the page.

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