QR Code Printing and Upconversion

What is the initial step in creating a QR code for printing?

• Using a 3D modeling software

• Creating an Auto-CAD file

• Designing in Photoshop

• Drawing by hand

What is the purpose of the ultrasonic atomizer in the printing process?

• To dry the ink quickly

• To enhance the color of the ink

• To atomize the ink for printing

• To clean the substrate

How does the 980-nanometer laser affect the QR codes?

• It enlarges the QR codes

• It excites them to show up in green

• It changes their color to red

• It makes them invisible

What is the role of the IR lens in viewing the QR codes?

• To magnify the QR codes

• To block out visible light

• To block out infra-red light

• To change the QR code color

How do different sets of upconverting nanoparticles enhance security printing?

• By making the QR codes visible to the naked eye

• By reducing the size of the QR codes

• By making the QR codes larger

• By allowing color variation in QR codes