RFH 355nm UV Laser for USB Laser Marking

An extremely thin beam of light swept across the surface of a USB flash drive, and in an instant, the product's logo and serial number were clearly and accurately "printed" on the surface of the USB flash drive.

This is laser marking, and this process is not "printing", but a beam of high energy density acts on the surface of the U disk, and by controlling the effective displacement of the laser beam, the surface material of the U disk is directly vaporized in a very short time. , so as to obtain clear and beautiful specific graphic information.

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Note that this is an irreversible process, meaning that the marks obtained by laser marking are permanent and cannot be tampered with. Therefore, laser marking has a very wide range of uses. In addition to marking the logo of the product, it can also mark complex text, graphics, images, light-transmitting buttons, barcodes, QR codes, product serial numbers, autographs, etc. On the one hand, it enhances the The anti-counterfeiting function and traceability function of the product, and the highly recognizable mark can also improve the influence of the product and brand, and enhance the overall market competitiveness.

The quality of the mark is directly related to the laser. With the advantages of short wavelength, high single-photon energy, narrow pulse width, and high peak power, 355nm UV nanosecond lasers are highly respected in fine marking.

Because the 355nm ultraviolet light is easy to focus, the diameter of the spot after focusing is micron, and the marked lines are very thin, so it can be easily marked with tiny marks, which can effectively enhance the anti-counterfeiting function; in addition, most materials have a very high resistance to 355nm ultraviolet light. High absorption rate, suitable for metal appearance or plastic shell commonly used in U disk. The most important thing is that the UV marking process is not thermal ablation, but cold peeling that breaks chemical bonds. The heat-affected zone is very small and does not produce heating or thermal deformation on the inner layer and nearby areas of the machined surface. Cold working is of great significance in the laser marking process, and the marking is clearer and more beautiful.