Wavelength for gallium iodide lamp

Sun, 28 Jun 2026 09:25:46 +0800

On a 200 m/min web press, UV output stability isn’t a nice-to-have—it’s the line. If peak irradiance drifts, the ink skins on the surface and traps solvent, or the photoinitiator response falls apart. Gallium iodide lamps meet that reality with a spectral output tuned to the photoinitiator absorption of modern offset, flexo, and screen inks, so the curing energy density stays consistent across the full web width. The heart of it is wavelength control. Gallium iodide pushes the dominant emission toward 400–420 nm, with a strong shoulder around 365 nm. That profile lines up with Type II and amine-synergistic photoinitiators—they cure deeper and faster under long-wave UV, while you still get enough short-wave energy for a solid surface cure. Pair that with a dichroic reflector and tight arc-length tolerance, and you get high peak irradiance right at the web, so cross-linking finishes in microseconds. You keep stable output even at 200 m/min, and lamp temperature is managed to prevent power droop and spectral drift over a shift. Here’s why it matters on high-speed web: dwell time is what it is. Gallium iodide lamps keep the dose per unit area predictable, so cure quality doesn’t chase line speed. On offset, the 405 nm band cuts heat load on thin substrates while still curing overprints and varnishes. On flexo and screen, the 365–405 nm blend drives through-cure on pigmented layers without over-curing the surface. And because the spectrum is matched, you waste less energy on IR and broadband output. A couple practical points. Lamp choice comes down to the press architecture. Offset units with inter-station curing need compact lamps and precise reflector geometry; flexo and screen often want a broader, uniform beam profile. Check your reflector coating, shutter integration, and power supply compatibility. Gallium iodide lamps run hotter at the arc, so keep the cooling airflow steady—output drifts if you don’t. Specify ozone-free quartz, and confirm the spectral radiometer reading at the web plane, not at the lamp housing.

UV lamp wavelength 365nm 420nm

Fri, 05 Jun 2026 06:23:43 +0800

On the art-tile line, you’re running decorated panels that have to come off the press with that glassy,釉面质感 finish—and the scratch resistance to take handling, grout, and cleaning without giving up. If the UV system doesn’t pull its weight, the ink surface stays tacky, the topcoat never gets the cross-linking it needs, and you end up scrapping panels that should have shipped. What matters technically We match the ink chemistry to the lamp’s spectral output. The 365nm mercury peak is what drives deep photoinitiator activation in the base layers, pushing full conversion and hardness development without surface inhibition. The 420nm shoulder gives you longer-wave penetration, so the cure profile levels out—especially where pigments or thick deposits eat up the short wavelengths. The payoff is a stable cure window: controlled peak irradiance, repeatable energy density (mJ/cm²), and an ozone-free design that keeps booth air clean and keeps reflector geometry consistent. Why it works on art tile Art-tile printing needs gloss that pops and toughness that sticks around. Run 365nm for initiation, then let 420nm even out the cure profile, and the topcoat cures into a dense network—high surface hardness, low residual tack, and better resistance to solvents and abrasion. You get that釉面质感 finish right off the line, fewer rejects, and faster changeovers because the lamp starts instantly and holds output over thousands of hours. Things to keep straight Match the lamp to the press. Offset, flexo, and screen all see different ink film thickness and spectral absorption, so reflector design and power density have to be picked per machine. And don’t skip thermal management—water-cooled or forced-air comes down to substrate tolerance and line speed. UV intensity drops as the lamp ages; keep a schedule for radiometer checks so energy density stays consistent and you don’t drift on gloss and hardness.

Wavelength on Smart UV Lamp

Wavelength for gallium iodide lamp

UV lamp wavelength 365nm 420nm