Voltar

Description of resolution

The level of detail that can be printed depends on the fineness of the mesh and the ratio of thread thickness to mesh opening.

SEFAR PET 1500
150-27PW

'Resolution' refers to the level of printed detail in line and half-tone artwork that a given mesh is capable of reproducing.

It is governed primarily by the mesh count, and the relationship of thread diameter to mesh opening.

Examining the relationship of thread diameter to mesh opening 'ω' more closely, screen printing mesh fall into the following categories:

Mesh opening greater than thread diameter (ω > d),
PET 1500 150-27PW ω = 36 μm

Mesh opening comparable to thread diameter (ω = d),
PET 1500 150-27PW ω = 32 μm

Mesh opening less than thread diameter (ω < d),
PET 1500 150-34PW ω = 23 μm

SEFAR PET 1500
150-31PW

In general, mesh where the mesh opening is greater than the thread diameter are capable of higher resolution than mesh where the opposite is true.

Next to the relationship of thread diameter to mesh opening, the thread diameter itself also affects the printable dot / line size.

Secondary factors in the printability of fine line and half-tone artwork are the flow, viscosity and rheology of the screen printing ink.

SEFAR PET 1500
150-34PW

The theoretical resolution capability Ath for a given screen printing mesh can be estimated from the followin formula:

Ath = √ 2 * t * d/ω

(t = ω + d)