2022
06/29
相关创新主体

创新背景

传统彩色喷墨打印以原纸为基础材料,将颜料、胶黏剂和各种化学辅助剂调成具有吸墨性的多孔性涂料涂在原纸表面,使纸张表面形成一层良好的,墨水接受层,原料和制造工艺影响着印品的最终质量。

20世纪60年代打印技术进步,利用激光成像技术,激光束将数字化图形或文档快速“投影”到一个感光表面,被激光束命中的位置会发生电子放电现象,然后由于静电作用,像磁铁般地吸引一些纤细的“墨粉”,最终呈现打印效果。

 

创新过程

丹麦技术大学科学家在激光打印技术的基础上,于2017年发明了一种彩色打印更加方便、效果更好的新型激光打印技术。印品生成过程无需墨水,可以保持色彩更加艳丽且持续更长时间。

新技术所用原料和传统喷墨打印不同,发生了革新变化。无需墨水和颜料,甚至不用纸张,仅需塑料、锗和一层防护涂料。打印过程中由大量微型柱体塑造的表面成为塑料层,取代原纸成为底层,然后将加入锗元素的薄膜涂覆在塑料上,经过激光加热之后就能显示出特殊色彩。激光光束可以保持直径大小的一致性,不像普通光束那样分散,所以可以保持很高的色彩纯度。

新型激光打印技术生成的印品的色彩对比更鲜明,分辨率更高,可以持久保持色彩艳丽。印品图像分辨率可达127,000 dpi,比传统激光打印机的图像分辨率高五倍,是喷墨打印机图像最大分辨率的二十多倍。

研究人员表示,目前已经利用新技术创造出了一系列棕色、红色及蓝色色彩。虽然还不能呈现出整个渐变色谱的色彩,但是未来仍有进一步提升的空间。新技术或将催生新的色彩种类,并促进商标打印的安全等级的提升。

原料替换为打印技术提供新的可能,利用塑料和化学元素相互作用,或许可以减少纸张运用,节约资源,并为塑料及其相关制品的循环利用提供新的使用方向。同时推动激光打印和成像技术发展。

 

创新关键点

利用激光打印技术替换原料形成新的打印技术。

 

A new type of laser printing that replaces raw materials

Based on laser printing technology, scientists at the Technical University of Denmark invented a new laser printing technology in 2017 that makes color printing more convenient and effective. The print creation process requires no ink, keeping colors brighter and lasting longer.

The raw materials used in the new technology are different from those of traditional inkjet printing, and innovative changes have taken place. No inks and paints, or even paper, just plastic, germanium and a layer of protective paint. During the printing process, the surface formed by a large number of micro-cylinders becomes the plastic layer, which replaces the base paper as the bottom layer, and then the film with germanium element added is coated on the plastic, which can display special colors after being heated by a laser. The laser beam can maintain the consistency of diameter and size, and is not as scattered as ordinary beams, so it can maintain high color purity.

The new laser printing technology produces prints with sharper color contrasts and higher resolutions that maintain vibrant colors for a long time. The image resolution of printed products can reach 127,000 dpi, which is five times higher than that of conventional laser printers and more than twenty times the maximum image resolution of inkjet printers.

Researchers say a range of shades of brown, red and blue has been created using the new technique. Although the color of the entire gradient spectrum cannot be presented yet, there is still room for further improvement in the future. New technologies may give birth to new color types and promote the improvement of the security level of trademark printing.

The replacement of raw materials provides new possibilities for printing technology. Using the interaction of plastics and chemical elements may reduce the use of paper, save resources, and provide new directions for the recycling of plastics and related products. At the same time promote the development of laser printing and imaging technology.

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