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.
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.
From a phone call and an email exchange with a flexo printer I propose a quick troubleshooting about printing white ink on transparent BOPP.
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.
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 …
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. …
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 …
I recently came across an interesting video that was published by one anilox rolls manufacturer that, in the attempt of promoting their technology, depicts dot dipping as an industry myth and illustrates flexo users, who believe that this problem exists, as troglodytes… “The industry myth that dot dipping is occurring within the anilox cells is impossible. Physics …
Do you really think that dot dipping doesn’t exist? Read More »
Can you recognise the cause of dirty printing in highlights?It is important to understand wether the issue is related to dot dipping, thus plate-to-anilox ratio, wrong metering of the anilox surface or other causes.What is visible on the printed product is a generally a dirty aspect that forces to repeated stops for plate cleaning and …
Ink transfer efficiency, ink coverage, color density, color matching and overall print quality strongly depend on properly maintained and clean anilox rolls.Check your anilox rolls thoroughly with proper high magnification viewing tools to ensure that your cleaning operations were effective.
