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The difference between inkjet and thermal printers

11. 26, 2021

Individuals and businesses around the world rely on printers for everyday use to print a variety of content, including receipts, documents, banners, signs and more. Let's take a look at two of the most commonly used printers -- inkjet printers and thermal printers -- and try to understand the differences between the two. 

 

What is an inkjet printer?

Inkjet printers are essential computer peripherals in many people's lives, helping to create everything from letters to life-size posters.

An inkjet printer is a printer that forces black or colored ink through a chamber or nozzle to a medium such as paper. These types of printers are typically used in homes, offices and large commercial operations.


Inkjet Printer

 

What is a thermal printer?

Thermal printers are low-cost, portable printers typically used to print receipts and shipping labels. Thermal printers, as the name implies, use a heated print head to print an image on paper. They use a heating element to burn or melt dot pattern characters on special paper. The thermal print head is the heart of the thermal printing system and consists of a fixed array of microscopic heating elements. When the resistive element is energized, heat is generated in the area below the element. Two main types of thermal printers are used: direct transfer thermal printers and hot wax transfer printers. Today, thermal printers are widely used for bar code printing, credit card receipts, airline tickets and school records. These printers do not rely on ink for printing, thus reducing costs.


Thermal Printing Machine

 

Differences between inkjet and thermal printers

 

Picture Quality 

Inkjet printers are one of the most prolific methods of digital printing and can produce high quality images at a low initial cost. The two main determinants of print quality are resolution, the substrate used for printing, and the number of levels that can be printed per dot. Any moisture or dampness can damage the prints. Thermal printers produce high quality prints with glossy, protective finishes and better color saturation. Because thermal printers have fewer moving parts, they are durable.

 

Printing Process 

Inkjet printers use liquid ink rather than ribbons and heat to produce an image - the printer jets thousands of tiny droplets of ink onto a substrate (such as paper) pixel by pixel to create an image. Thermal printers use heating elements to burn or melt dot-matrix pattern characters on special paper. This is a cost-effective industrial printing technique that applies dried wax-based pigments to a substrate, such as paper, that uses heat. The print head does not move across the page; instead, it scans the paper and prints a line of characters.

 

Equipment Costs 

Although thermal printers do not require ink, the special materials used in the printing process can be quite expensive. However, in bar code applications, no other printing technology can beat the image clarity of thermal printing at anywhere near the price. Thermal inks are usually a little more expensive than inkjet cartridges. Inkjet printers are relatively inexpensive, and ink cartridges are cheaper than thermal inks. In addition, cartridges can be refilled and reused, thus saving money.

 

Applications

Thermal printers are widely used for bar code printing, credit card receipts, airline tickets, and school records. Commercial applications for thermal printers include kiosks, gas stations, POS systems, shipping labels, etc. Inkjet printers are widely used in office and industrial applications for wide format printing. They are primarily used for a variety of industrial applications such as signage, 3D printing, high-speed coding, mail addressing, package marking, billboards and banners.

 

Although thermal and inkjet printing are both widely used printing methods, they are distinctly different processes. Thermal printers use a heating element to burn or melt dot-matrix patterned characters into special thermal paper. Thermal printing is widely used for battery-powered handheld printing devices, bar code printing and credit card receipt printing. Thermal printers are more sustainable and reliable than inkjet printers because they have fewer moving parts. Inkjet printers produce characters by ejecting a precisely controlled stream of ink dots onto the paper. Inkjet printers are relatively inexpensive to purchase and maintain.


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