Laser Printer.pptx
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The laser printer uses laser technology to print text and images on paper. It works by using a laser beam to draw an electrostatic image on a selenium-coated drum. Dry ink powder called toner then adheres to the charged areas on the drum and is transferred to the paper. The paper goes through heat and pressure to permanently fix the toner image. Common steps in the laser printing process are charging the drum, exposing it to the laser beam, developing the image with toner, transferring it to paper, and fusing it on with heat. Laser printers have advantages like higher speeds and lower costs compared to inkjet printers.
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This document provides an overview of laser printers, including their history, basic components, printing process, advantages, disadvantages, applications, and latest models. It describes how laser printers use a laser beam to produce an image on a photosensitive drum, then transfer the image to paper using heat and pressure. The document traces the development of laser printers from their invention in 1969 to widespread adoption starting in the 1980s. It also lists the core components of a laser printer and explains the multi-step printing process.
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This document provides an overview of different printer technologies. It discusses the basic principles of laser printers and inkjet printers. Laser printers use static electricity to transfer toner powder to paper to create the printed image, while inkjet printers use thermal bubble or piezoelectric mechanisms to spray ink droplets. The document also describes various printer components like photoreceptors, toner, and fusers, and how they work together in the printing process.
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The document defines key terms related to printer cartridges and printing technology:
Duplex printing allows automatic double-sided printing. CMYK refers to the cyan, magenta, yellow, and black color combinations used in color printing. Consumables are items like cartridges that need periodic replacement as they are depleted during printing. Ethernet cable is used to create local networks for printing. The fuser unit fuses melted toner onto paper. Laser printers use static electricity to create electrostatic images for printing. Toner is the powder used in laser printers that is melted and bound to paper.
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This document discusses different types of printers and their components and functions. It begins by distinguishing between impact printers, which use mechanical parts to print, and non-impact printers, which print without striking the paper. It then focuses on inkjet printers, describing their main components like the print head with nozzles that spray ink droplets, ink cartridges, and stepper motor. Laser printers are also summarized, explaining how they use a laser beam to attract toner powder to the page to print. The printing process for both inkjet and laser printers is outlined in multiple steps.
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Laser Printer.pptx
- 1. Laser printer & Working principle Click Here to Watch Lecture on YouTube COPYRIGHT © First Code - Let's Begin
- 2. LaserPrinter The laser printer is one of the common personal computer printers. It was introduced in 1971, and after that it was developed at Xerox PARC by Gary Starkweather. It uses the laser or non-impact photocopier technology to print the text and images on the paper. Whenever it gets input to print any document, a laser beam draws the document on the selenium-coated drum with the help of electric charges. COPYRIGHT © First Code - Let's Begin
- 3. LaserPrinter When the drum is charged, it is rolled in toner (dry ink powder). The ink follows the image, which has charged on the drum. The ink is combined with the paper, including heat and pressure, then transferred on a chunk (piece) of paper. When the document is printed, the excess toner is collected, and an electric charge is removed from the drum. Most of the laser printers are capable of printing only in monochrome. The monochrome laser printer is around ten times cheaper than a color laser printer. COPYRIGHT © First Code - Let's Begin
- 4. There are many differences between a laser printer and inkjet printer, such as: oThe laser printer contains dry ink, while an inkjet contains wet ink. oAn inkjet printer is approximately ten times more expensive than the laser printer as it requires replacing the ink very frequently. oIf a paper is wet, the inkjet printer will print the document with blur, but the laser printer will print clear. The inkjet printer is suitable for printing fewer documents, while the laser printer has the ability to print more documents. COPYRIGHT © First Code - Let's Begin
- 5. Advantages These types of printers have a higher paper capacity. It is less expensive than the inkjet printer. It has the ability to print documents speedily. Furthermore, it is able to increase productivity. Disadvantages Laser printers may need warm up time. Laserprintersare bulky as they requiredthe laser technology and imaging drum. It requires high voltage leads to small carbon emissions. COPYRIGHT © First Code - Let's Begin
- 6. Working Principle of LaserPrinters COPYRIGHT © First Code - Let's Begin
- 7. Working Principle of LaserPrinters Laser printers print in the following steps : Charge – This step cleans the surface of the cylindrical photosensitive drum and places a uniform negative electrostatic charge. Expose – A data modulated laser beam scans the drum surface, converting selected negative points to positive points. Develop – Dry toner powder gets attached to the positive points of the drum. Transfer – Image made with dry toner powder on the drum surface gets transferred to the piece of paper. COPYRIGHT © First Code - Let's Begin
- 8. Detach – This steps remove the pieceof paper, along with the dry toner image on the paper, from the drum. Fusing – This step fixed the toner image on the paper with heat and pressure. Clean – Cleans any residual toner from the surface of the drum and prepares the drum for the next print cycle. COPYRIGHT © First Code - Let's Begin
- 9. Thanks forWatching company/firstcodeyt @firstcodeyt @firstcodeyt @firstcodeyt Mail your queries at firstcodehelpdesk@gmail.com @firstcodeyt COPYRIGHT © First Code - Let's Begin