The drum charge depends on whether a write to black or write to white method is used.
Toner and drums can work with either a positive or negative charge.
In my experience most brands use a write to black method– where the light hits, the toner sticks. It works with either a positive or negative image. The laser writes an image on the drum by discharging specific areas. A drum has a thin coating that acts as a capacitor to hold a charge while in darkness but changes to a conductor when exposed to light. Finally heat and pressure are used to fuse it to the paper.Ī critical component of any laser process is the photoconductive drum and toner. This principle will get the toner to stick where it should and keep out of the areas it shouldn’t. They work on the principle of opposites attract and likes repel. Laser printers use an electrostatic process to create images or text on paper. The ink process is simple but it does produce high quality images. This allows for precise timing of the spraying of ink as it moves back and forth across the paper. A tri color cartridge has 3 separate tanks and printheads.Īn encoder strip is critical for letting the printer know where the printhead is in proximity to the paper. No matter which method is used, each color has its own printhead. Both methods suck ink from the tank to refill the chamber. It vibrates instead of using heat to spray out ink. Instead of a resistor, a tiny crystal is behind every nozzle. Some printheads use heat and others use mechanical energy to push the ink through the nozzles of the printhead.īrands such as HP and Canon use the heat method. The more nozzles and smaller the openings the better. The printhead is the heart of any inkjet printer. These are called supertank inkjet printers. Some have a separate tank connected to the printhead. Inkjet printers use cartridges with a built in printhead. Press inks are the consistency of a gel or hand cream. Which are different from printing presses. Basically, inkjet printers are just really good at spray painting.Īny printer that sprays liquid ink is considered an inkjet printer. How they work isn’t important to decide which is better but it can provide a base for understanding their strengths and weaknesses.Īn inkjet printer uses ink to create images or text on paper. More in depth articles on how an inkjet printer or laser printer works are also found at The Printer Jam. We’ll begin with a brief explanation of what each type of printer is. With 25+ years experience fixing printers, I can share some insight. Everything you need to know about what can go wrong with each type will be covered. The total cost of ownership ae compared for the most popular models of inkjet and laser printers. This guide will show you inkjet vs laser printers quality so you can see for yourself which is better. The three things to consider whet choosing which type are: Whether you’re looking for the home or office, this guide will help you decide which is better. Get your test chart and put your printer to the test!.
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