No ink is also printed, how is this going?

Regardless of printing inks are inseparable, it has become the stereotype of people, without ink printing technology will undoubtedly break this notion, if you really can be achieved, which will become a new printing technology. Information about the industry, there have been no ink printing technology, I recently checking the patent process, also found on "inkless printing equipment," the patent, so it had a strong interest.

"Inkless printing device" patent

July 27, 2011, the European Patent Office issued a number of "GB2477139 (A)" of "inkless printing device" patent, inventors of Great Britain WYRESCHRISTOPHERANTHONY, WALKERMARTINROBERT, JARVISANTHONYN, CRIDLANDJOHN. The patent inkless printing using a dry process, no toner, ink and other imaging material when printing images, but requires the use of specific substrates - the substrate on which to contain photosensitive coloring materials such as diacetylene and the like, When these light-sensitive coloring material is exposed to an appropriate energy source (such as a laser) below, it is easy to change the color. In order to print the desired image, should be allowed to direct exposure to the laser beam selectively to different areas of the substrate, so that the substrate changes from colorless to produce any hue.

As the substrate printing materials include coloring substrate layer and a photosensitive layer. Sensitive coloring layer may be incorporated into the diacetylene materials infrared (IR) spectrum / near-infrared (NIR) spectral absorption material, or material is placed in the diacetylene infrared (IR) spectrum / near-infrared (NIR) spectral absorption material above.

Inkless printer core components

The inkless printer core component of the substrate marking device, which consists of a radiation source and a control system, as shown.

Board mark means working schematic

This device comprises three printheads (i.e., the print head 1, the print head 2 and printhead 3), each print head is a radiation source for emitting radiation of different wavelengths. Wherein the print head 1 and the printing head 3 by an infrared (IR) radiation / near-infrared (NIR) radiation emitter arrays, it may also be composed of a thermal print head contact, providing a first wavelength of radiation. Thermal radiation can have a wide spectrum or restricted within a specific frequency range, heat radiation emitter suitable include, but are not limited to: infrared (IR) / near-infrared (NIR) laser, infrared (IR) / near-infrared (NIR) light-emitting diodes (LEDs), resistive or inductive heating elements. The print head 2 is composed of an ultraviolet (UV) emitter array composed of a second radiation wavelength, a suitable ultraviolet (UV) emitters include, but are not limited to: UV lasers, UV light emitting diodes (LEDs), UV light (e.g. a mercury lamp or deuterium lamp). Each print head has a separate transmitter can be individually addressed and can be individually controlled by a microprocessor via a driver amplifier.

Source: Internet