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This is a great idea about the printer. If successful, it may be able to bring the life of a modern printer.
First of all, using solar power, no need for ink cartridges, no pollution, and clean energy. The electricity is collected by solar energy, and then the paper is carbonized and "printed" by a functional focus like a magnifying glass.
Of course this is only a concept, but it guides the direction and deserves further study. There may be new discoveries.
Designers: Hosung Jung, Junsang Kim, Seungin Lee & Yonggu Do
LED Outdoor Colorful Ball Lights,Simulation Crystal Ball Light,Outdoor Ball Lights,Outdoor Garden Ball Lights
Sichuan Kangruntengpu Photoelectric Technology Co., Ltd. , https://www.kangruntoplighting.com