Improve instrument quality for screen printing

Tonometer

For screen printers , a tensiometer is an instrument that measures and monitors the screen level during the stretching or re-use. The unit of measurement is Newtons per centimeter, which is simplified to N/CM.

Note: 1 Newton is the force measured by accelerating the 1 kilogram of material on an area of ​​one square meter.


Thickness gauge

The instrument is mainly used in the following areas:

Printed circuit board (PCB);

Glass ornament

Ceramic ornament

Ceramic applique.

The print quality will depend on the control of the conditions of each factory during actual printing.

Thickness gauges are increasingly being used by all screen printing manufacturers certified by quality standards certification bodies.


Surface roughness measuring instrument

The instrument has been used in the engineering field for many years, and the screen printing industry was in the late 80's. The tester can show the flatness of the stencil surface. The sign of the surface roughness value is RZ, and an RZ value of 0 indicates that the template is very smooth.


Surface moisture meter

For best results, the reticle needs to be fully dried before exposure. If it is not completely dried out, the moisture contained in the photoresist will cause the photosensitive agent to be insufficiently sensitive, resulting in underexposure of the template, and even worse, there will be a phenomenon of release. The dryness of the screen is not easy to judge. The contact humidity meter is an ideal test instrument. It can eliminate people's concerns about the moisture content of the stencil to be exposed.


Ray Detector

In the stencil exposure process, two important parameters need to be controlled: the energy of the UV light and the distribution of light in the stencil area. Although most quality exposure machines are now equipped with an optical integrator as compensation for the UV output of the wave, it is not easy to measure the distribution of the incident light and the state of the UV light radiation density.

When the center of the exposure frame and the density of the light in the farthest corner are at the same level, the desired distance is achieved.

When using this measurement, wear UV-proof glasses and do not prolong unnecessary exposure.