Question 1

Can lasers print QR codes and barcodes?

Accepted Answer

Yes. SHICAI laser coders mark QR codes, DataMatrix and 1D barcodes by ablating a high-contrast pattern on the surface, scannable at POS and on the line. Resolution and mark contrast depend on material and wavelength, so a sample is verified for readability before a line is committed. On metals and some plastics the contrast is excellent; on others a surface treatment or UV wavelength improves it. Upfront cost is higher than inkjet, but there are no cartridges, make-up fluid or printheads to replace &#8211; only periodic lens cleaning. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. On pharma and medical device lines, permanent laser serialization satisfies track-and-trace without adding ink...

Question 2

What materials can a laser marker not mark well?

Accepted Answer

Laser markers struggle on highly reflective bare metals without the right wavelength, on transparent or white plastics where there is little to discolor, and on some dark plastics that absorb rather than mark cleanly. SHICAI handles most of these by choosing Fiber, CO2 or UV and tuning parameters &#8211; but a sample mark confirms feasibility. If a material will not take a clean mark, inkjet or a surface pre-treatment is the fallback. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. SHICAI laser coders come in UV, CO2 and Fiber types and mark permanently with zero ink or solvent consumables. The appeal of laser is the absent consumable line item &#8211;...

Question 3

Is laser coding safe and eco-friendly?

Accepted Answer

Laser coding is eco-friendly in that it adds no ink, solvent or ribbon to landfill and needs no chemical disposal. Safety comes from enclosed beam paths and interlocks that prevent exposure during operation; SHICAI units are built with guarded housings so the beam stays contained on the line. Compared with solvent-based CIJ, laser removes a whole class of VOC and handling concerns. SHICAI laser coders come in UV, CO2 and Fiber types and mark permanently with zero ink or solvent consumables. Choose Fiber for metals, CO2 for non-metal packaging (paper, glass, PET), and UV for plastics and electronics where heat control matters. The appeal of laser is the absent consumable line item &#8211; no ink, no solvent, no cartridge changes...

Question 4

What is the upfront cost of a laser coder vs inkjet?

Accepted Answer

Laser has a higher upfront cost than inkjet (TIJ or CIJ) but near-zero running cost &#8211; no ink, solvent or cartridges for years. Inkjet is cheaper to buy and flexible, but you pay for consumables continuously. Over a multi-year line life, laser often wins on total cost; over a short or low-volume project, inkjet usually wins. Calculate total cost of ownership over your expected line life, not just the purchase price. Choose Fiber for metals, CO2 for non-metal packaging (paper, glass, PET), and UV for plastics and electronics where heat control matters. Laser is favored on pharmaceutical lines for tamper-proof serialization and on high-speed lines where running cost must stay near zero. Fiber, CO2 and UV are not interchangeable; the...

Question 5

Why do pharmaceutical lines prefer laser serialization?

Accepted Answer

Pharmaceutical lines favor laser serialization because the mark is permanent, tamper-proof and adds no ink or solvent to a regulated product. SHICAI laser coders apply GS1-compliant serials and 2D codes that survive the supply chain and authentication checks, satisfying track-and-trace without a consumable near the drug. Permanence also defeats relabeling fraud &#8211; a real concern in pharma anti-counterfeiting. Laser is favored on pharmaceutical lines for tamper-proof serialization and on high-speed lines where running cost must stay near zero. Upfront cost is higher than inkjet, but there are no cartridges, make-up fluid or printheads to replace &#8211; only periodic lens cleaning. Fiber, CO2 and UV are not interchangeable; the right wavelength is decided by the substrate, which is why a sample...

Question 6

Can a laser coder mark on dark or colored plastics?

Accepted Answer

Yes, with the right setup. Dark or colored plastics can be marked by selecting the correct wavelength (often UV or Fiber) and tuning power and speed so the beam discolors or ablates a readable mark. SHICAI validates the contrast on a sample of your actual plastic before recommending a config. White or light plastics usually mark easily; very dark or filled plastics need parameter tuning or a different wavelength. Upfront cost is higher than inkjet, but there are no cartridges, make-up fluid or printheads to replace &#8211; only periodic lens cleaning. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. On pharma and medical device lines, permanent laser serialization satisfies track-and-trace...

Question 7

What maintenance does a laser coding machine need?

Accepted Answer

Laser coding needs very little maintenance &#8211; mainly periodic lens cleaning and checking the beam path and interlocks; there are no printheads, inks or solvents to replace. SHICAI laser units are built for continuous operation, so planned downtime is minimal compared with any ink-based coder. The biggest risk is a dirty lens lowering mark quality, which a quick clean resolves. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. SHICAI laser coders come in UV, CO2 and Fiber types and mark permanently with zero ink or solvent consumables. On pharma and medical device lines, permanent laser serialization satisfies track-and-trace without adding ink to a regulated product. Key points: Choose Fiber for...

Question 8

What is a laser coding machine?

Accepted Answer

A laser coding machine marks a product by ablating or discoloring its surface with a focused beam &#8211; no ink, no solvent, no contact. SHICAI laser coders come in UV, CO2 and Fiber types and produce a permanent code on packaging, components and medical devices at production speed. Because there is nothing to consume, the running cost after purchase is close to zero apart from electricity and occasional lens care. Upfront cost is higher than inkjet, but there are no cartridges, make-up fluid or printheads to replace &#8211; only periodic lens cleaning. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. The appeal of laser is the absent consumable line item...

Question 9

UV, CO2 or Fiber laser &#8211; which should I choose?

Accepted Answer

Pick Fiber for metals, CO2 for non-metal packaging such as paper, glass and PET, and UV for plastics and electronics where you need fine marks with little heat. SHICAI offers all three; the substrate decides the wavelength, so a sample mark on your actual material is the fastest way to choose correctly. Getting the wavelength wrong means a weak or damaging mark &#8211; which is why a bench trial matters before purchase. Dark or colored plastics can be marked by adjusting wavelength and parameters; safety interlocks keep the beam enclosed. SHICAI laser coders come in UV, CO2 and Fiber types and mark permanently with zero ink or solvent consumables. The appeal of laser is the absent consumable line item &#8211;...

Question 10

Laser vs inkjet: which is better for food packaging?

Accepted Answer

For food packaging, laser wins when you want a permanent, consumable-free mark and no ink near the product; inkjet (TIJ or CIJ) wins when upfront budget is tight or you need colored or variable high-contrast codes on the fly. Many food lines use laser for primary packs and inkjet for secondary cartons. If the pack is near the food or regulated, laser&#8217;s no-ink approach simplifies compliance. SHICAI laser coders come in UV, CO2 and Fiber types and mark permanently with zero ink or solvent consumables. Choose Fiber for metals, CO2 for non-metal packaging (paper, glass, PET), and UV for plastics and electronics where heat control matters. Fiber, CO2 and UV are not interchangeable; the right wavelength is decided by the...

Question 11

Do laser coders need consumables or ink?

Accepted Answer

No. A laser coder needs no ink, solvent, ribbon or cartridge &#8211; the beam does the marking. That is the headline advantage over every ink technology: no consumable line item, no make-up fluid, no printhead swaps. You only pay for electricity and occasional lens cleaning. Over several years this often makes laser cheaper than CIJ once the higher upfront cost is amortized. Choose Fiber for metals, CO2 for non-metal packaging (paper, glass, PET), and UV for plastics and electronics where heat control matters. Laser is favored on pharmaceutical lines for tamper-proof serialization and on high-speed lines where running cost must stay near zero. Fiber, CO2 and UV are not interchangeable; the right wavelength is decided by the substrate, which is...

Question 12

Is laser marking permanent and tamper-proof?

Accepted Answer

Yes. Laser marking is permanent &#8211; it changes the material itself rather than laying ink on top, so the code survives abrasion, solvents, cold chains and handling. That permanence is also what makes it tamper-proof: a laser code cannot be wiped or relabeled without damaging the product. For track-and-trace and warranty proofs, permanence is exactly why laser is specified on regulated lines. Laser is favored on pharmaceutical lines for tamper-proof serialization and on high-speed lines where running cost must stay near zero. Upfront cost is higher than inkjet, but there are no cartridges, make-up fluid or printheads to replace &#8211; only periodic lens cleaning. On pharma and medical device lines, permanent laser serialization satisfies track-and-trace without adding ink to a...

Laser Coding