Scientists create laser printer that can print up to 127 000 dpi




Danish scientists have found a way to print with a density of 127 000 dpi images. To this end they use a laser, and a special nano-structure on the basis of aluminum. It is also possible to print in color.

The method was developed by scientists at the Technical University of Denmark. They describe a technology to print at a maximum resolution of 127 000 dpi images, and demonstrated that with an image of the Mona Lisa which is printed on an area equivalent to that of a conventional pixel, the researchers said.

According to the researchers being printed with a laser which locally a sheet of aluminum, of a thickness of only 20 nanometers, is heated. This aluminum foil is placed on a nano-structure with individual components that have a diameter of 100 nanometers, of which there are a large number are arranged in a grid. Because the individual “pixels” can be heated independently of each other, the printer can create different patterns. In addition, the making of color is also possible, because the aluminum is deformed, and thus reflects other wavelengths back.

One of the applications that the researchers have devised is to store information that is not visible to the naked eye. Thus, codes and other information can be stored and scanned, but it is for people not readable. It is unclear when the technology is usable in practice.

Mona Lisa printed on high dpi


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