How Does an Inkjet Printer Work?
Twenty or thirty years ago, many people thought that computers would take the place of paper. The Xerox company, which pioneered photocopiers in the 1960s, was so worried that paper would disappear (at the same time destroying its lucrative business) that it set up a famous laboratory called PARC, to develop computers. Ironically, even though Xerox PARC helped invent the computers we all rely on today, the paper has remained as popular as ever. Now, thanks to the popularity of home computers and digital cameras, more and more people have printers in their homes, and most of them are inkjet printers. Cornrow exactly do they work?
Inkjet printers are an evolution of dot matrix printers. Instead of metal needles, they use hundreds of tiny guns to shoot dots of ink on the paper. The characters they print are always made up of dots, just like in a dot-matrix printer, but the dots are so tiny you can barely see them. Printers inkjet draw ink in various ways. In Canon printers, ink is drawn by heating it so that it explodes towards the bubble paper. This is why Canon sells its printers under the “Bubble Jet” brand. Epson printers work differently. piezoelectricity. Tiny electrical currents controlled by electronic circuits inside the printer move the miniature crystals back and forth, shooting ink in jets. You can think of inkjet printers very simply as a bunch of ejectors rattling millions of dots of ink on paper every second.
How do inkjet nozzles work?
How do the ink nozzles in a Bubble Jet thermal printer inject ink onto the page?
- Under the instructions of your computer, an electronic circuit in the printer determines which nozzles to shoot to print a particular color at a certain point on the page.
- The circuit activates each of the nozzles by passing an electric current through a small resistor inside.
- When electricity flows through the resistance, it heats up.
- The heat of the resistor boils the ink inside the nozzle immediately next to it.
- As the ink boils, it forms an ink vapor bubble. The bubble expands enormously and bursts.
- When the bubble bursts, it projects the ink it contains onto the page at a precisely formed point.
- The collapsing bubble creates a partial vacuum in the nozzle which draws more ink from the ink tank, ready for printing the next point.
- During this time, the whole print head moves to the side, ready to print the next character.
What are the main parts of an inkjet printer and the roles?
In an inkjet printer we have:
- The gears driven by an electric motor, turn the rollers which advance the paper through the printer.
- A flexible flat cable carries the printing instructions from the electronic circuit inside the printer to the mobile cartridge.
- The plastic rollers and rubber pinch the paper so that it can be moved in the printer with absolute precision.
- A sturdy metal rail guides the printer head as it moves back and forth.
- Of sharp wheels at the front of the printer help capture paper safely and accurately move.
- The print cartridge prints left to right then reverses the print information and prints backward from right to left. This is called bidirectional printing which allows pages to be printed much faster.