6 tips to get started successfully with an MGI JETvarnish digital embellishment press

The installation of a JETvarnish opens the way to embellish a digital high precision : spot varnish, 3D textures, foil digital... but his masters application method and rigor. It faur remember the fundamentals that allow a new operator to move quickly. 

1 – Prepare for success before printing 

A production fluid begins well before the launch of the first draw. 

• Bring together the elements of the work : files, events, media and materials should be prepared and compliant. 
• Parse the file before production : areas of thin, solid, density of the mask, margins. 
• Packaging of the paper : the machine and the leaves should be in a stable environment, clean, humidity-controlled and static-free. 
• Maintain an environment that is impeccable : dust, moisture and static influence directly the quality. 
• Focus of the leaves flat and has good temperature” : the impressions recent deform less and more accepting of the varnish. 
• Avoid having to cut ahead : a paper cut-out too soon absorbs moisture and warp. 
• Prepare the day before : media acclimated, varnish loaded, machine ready early in the morning. 
• Test early to detect the problems of identification and / or design. 

2 – A learning curve: 3 to 6 months 

The getting started application time : familiarization with the machine, the software, the masks, the settings paper and the routines of production. The regularity accelerates learning : the more you print, the more the gestures become natural. 

3 – understand the technology varnish MGI

The varnish is projected in microdroplets and hardened instantly. This fluid nature imposes : 

• A stable environment (temperature, humidity, static). 
• A perfect cleaning of the heads and leaves. 
• A control of the UV drying, especially for the thick layers 3D. 

The JETvarnish reacts to changes : an operator attentive anticipates these behaviors.

4 – tracking : know the scanner and react like him.

The AIS system scans each sheet to adjust the varnish in real-time. Alignment problems are often the result of : 

• benchmarks poorly printed, 
• leaves curled, 
• margins incorrect, 
• media too shiny. 

Understand what it “sees” the scanner can resolve the majority of the variances.

5 – The art of the anticipation of problems

• Fuzzy details : mask too dense, too dense varnish, speed too high. 
• Stripes : nozzle clogged, dust, artifact from the file. 
• Jams : adjustments air, static, guides, state of the battery. 

Each incident becomes an experience that enriches the expertise. 

6 – The ideal profile of an operator JETvarnish

The best operators combine : 

• technical sense,
• rigor, 
• understanding files,
• capacity analysis, 
• attention to detail. Experience in prepress is a major asset.  

With careful preparation of the materials, a good understanding of the UV varnish and attention to the tracking AIS, the JETvarnish becomes even more easy to operate. Good reflexes — control of the environment, playback of masks, maintenance — heads are to be acquired quickly with practice. In a short time, a prudent trader can obtain reliable results and to fully exploit the potential of his JETvarnish.