Different Types of Ink Printing | Inkjet Printing

Piezoelectrical ink vs Thermal bubble ink

Piezoelectrical ink vs Thermal bubble ink

To say there are a few types of inkjet printing doesn’t actually do justice to the systems used. Many forms of printing exist and they’re all works of art craft by trial and error until the system was perfected. Inkjet printing has two well known styles of printing. On one hand you have thermal ink and the other, ink that utilizes small electrical discs. Thermal ink and Piezoelectric systems couldn’t be more different, yet achieve the same thing. What is the difference between the two, and which is more effective? These are two questions often asked, without an answer. Today we’ll go over the differences and similarities between them.

Thermal Ink Transfer

Thermal ink transfer is the most used system for inkjet printing in the world. Used by HP, Brother Canon and more, this widely adopted system has become the go to method for almost every manufacturer. Extremely small resistors heat up the print head and boil the ink. The ink then bubbles, as the bubble expands it forces tiny bits of ink onto the paper. Eventually the resistors cause the bubble to pop from increased heat this then creates a vacuum sucking up the ink before more falls onto the paper. Think of it as if you had a dropper or turkey baster. If you squeeze the bulb the water drops out, as soon as you release the bulb the water cannot drop because the air pressure doesn’t allow it to. the same basic principle applies here by the computer chips in the printer telling the resistors to heat up or not heat up.

Piezoelectric Ink Technology

This is an inkjet technology only used by one manufacturer as of now. That is because the patent for it is owned by Epson. Epson created the next step in ink technology in Piezoelectric ink cartridges. Using a tiny crystal and vibrations you can achieve the same effect as thermal transfers do. The disk is placed in the back of the cartridge and connected to an electrical current. This current vibrates the disk one of two ways. If it vibrates inward the ink is dispenses onto the page, outwards the ink is sucked back up. This is seen as the premier way of handling inkjet printing as more precision control is given off. The electrical charge can be more evenly applied relative to thermal heating. This is the reason Epson has long been the Inkjet printer of choice for avid home photo printing customers.

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