Cover glass screen print
Jun 17, 2026
It refers to how logos, colors and IR/TOF holes put onto glass, which used in phones, cars, home displays etc.
The mesh is 270-300 count, tension at 22-24N/cm. Off contact: 3-5mm, you will see bleeding or fuzze edges if these wrong.
The water based ink is more clean and no smell. 2 part epoxies hold up better against gasoline and sweat. Inorganic needs 600°C and firing to make it strong.
Common problems:
Jagged lines / pinholes → ink too thick, dirty screen, or uneven squeegee.
Peeling → wrong bake temperature or time. Check your oven curve. Do crosshatch tests-aim for 4B.
Stringing → low off-contact or high humidity. Adjust thinners: slow for summer, fast for winter.
IR hole halo effect → IR ink reacting with black base. Switch ink systems or add flow control.
Shop tricks:
Bad flatness? Print a peelable temporary layer before re-grinding. Saves rework costs.
Don't guess from the office. Walk to the line, look at the rejects, check what changed.
Never mix a full batch. Add ink in small amounts, stir often, top up thinner as it sits. Viscosity drifts fast in warm weather.
