Today my wife challenged me with 2 versions of a packaging that showed a brand color with -she said- visible differences: “But is this difference tolerable?” she asked.I must say that her color vision is probably not normal: she can often spot a difference when a normal human being would not see anything.So, I took […]
Do you tolerate that blue? Read More »
Sometimes printers request that their flexo plates are made with an excessively high printing relief, with a deeper engraving than necessary.This can be a sign of something not working properly in the printing unit.Hear what happened recently when a flexo repro house called me on this topic…
Why do you request such a high relief on your flexo plates? Read More »
It is often thought that the skill of a printing press operator is linked to his ability to solve problems. It’s actually more important to make sure these problems don’t happen. And this is achieved with an in-depth knowledge of the variables and components that interact in the printing process.I covered this in the article
Do you solve problems or make them not happen? Read More »
The appearance of ghost images in printing is a brain teaser for many flexographic press operators.Can you recognize the different types of ghosting?Do you know the reason of the most common ghosting defects?Take a look at this video to know more.
Ghost images in flexo printing Read More »
In what sequence do you print your inks?Light to dark? Dark to light? And why? In this video pill I try to give some hopefully useful information for flexographic printers.
What is the print sequence of your inks? Read More »
From a phone call and an email exchange with a flexo printer I propose a quick troubleshooting about printing white ink on transparent BOPP.
Can you help me to print white? Read More »
Have you ever experienced any troubles when printing in flexo? Here is a list of things you should avoid when approaching flexography in order to prevent from troubles in production.
10 things to avoid in flexography to prevent from troubles Read More »
The register between colors is a fundamental aspect for the quality of the printed product. But what is the correct register tolerance and how to evaluate it? ISO 12647-6 connects the register tolerance to the print linescreen. The higher the linescreen, the greater the expected accuracy on the printed product. According to this norm, register
Register tolerance: what is the correct value? Read More »
Description Causes Remedies Description Slur is characterised by the smearing of the printed image: the dots are distorted in printing direction, typically elongated, and exhibit an oval shape. This condition is caused by slippage at the point of contact and impression between the plate and the substrate and/or even the plate and the anilox roll.
Slur: the sneaky enemy of print quality Read More »
Description Causes Remedies Description With the term “ghosting” we describe the presence of a faint image of a design that shows in areas where it was not intended to appear. Usually it is a repeated pattern on print along machine direction. Causes The main cause is attributable to the failure of replenishing, with fresh ink, the
