• Glossary

Technical terms M


A repetitive interference pattern. In printing, it can be caused by interference between the dot patterns of the different colors or by interference between a pattern in the data being printed and the screened dots. In scanning, moiré can be caused by interference between the grid of the scanner CCDs and patterns in the original that is being scanned.


The embossing is on the back side of the substrate thus not or only slightly visible. The micro-embossing requires a very finely engraved stamp. It is between the plan and structural shape the finest level of deformation. The special effect of this process lies in the cybernetic effect, which in the case of a viewing angle change from the refraction of light in the surface structure is the result. With the help of micro embossing can lenticular effects can be reached. For this fine micro embossing structures - despite the two motives - only an embossing stamp is required.

Metallic tones

If the printing result of precious work has a certain value, this can be implemented via metallic tones. The associated result spectrum can be devided according to the gloss degree from matt to glossy, the size of the bronze particles from coarse to fine as well as on different colors. From gold and silver, copper and up to platinum various color effects are conceivable. Among metallic tones a so-called "bad" can occur in when the color impressions depending on the viewing angle vary.

Mesh size

The concept of mesh size in sieves or tissues describes the distance between two adjacent warp or weft wires or - to put it simply - the size of the openings. It is specified in the unit µm, which is micro-meters, the next smaller unit to mm. The mesh implies the limit value of a screen printing color with respect to the median particle size.

Machine direction

An alternate term for grain direction.

Machine coating

In machine coating the copy layer is automatically applied on both sides on the tissue. The process is similar to the coating by hand. However in contrast to it, machine coating offers the advantage that with large format printing sieves more uniform coating results are possible. Since all coating parameters can be sdjusted, the machine represents coating reproducible results, which results in a replicate printing effects. These parameters include the number of coating effects (coating passages), the speed of the coating as well as the contact pressure of the coating gully. Often comes to the drying process immediately after the coating process is an infrared heater for use.

Machine coated

Paper that has had a coating applied to either one or two of its sides during the papermaking process.