Ghost images in flexo printing

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. Are you interested in customized training in flexography? Contact [...]

2021-10-01T19:03:23+00:00Tags: , , |Comments Off on Ghost images in flexo printing

Scoring lines on anilox rolls

What is one of the worst problems that can happen in the flexo pressroom? One anilox roll damaged by scoring lines means stopping a production or accepting a print defect. Why do these scoring lines occur on the anilox surface? What happens in printing? What can we do to prevent this problem? I gathered [...]

2021-06-17T09:12:41+00:00Tags: , , |Comments Off on Scoring lines on anilox rolls

How many resolutions?

How many resolutions do we need to know in flexography? There are four important information related to resolution within the flexo workflow. 1# The resolution of the anilox roll, or its line-screen or cell-count, that is the number of cells engraved on the surface by linear unit of measure. We express it, in the metric [...]

Do you really think that dot dipping doesn’t exist?

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 [...]

2018-07-28T10:27:46+00:00Tags: , , , |1 Comment

Can you see how dirty is your anilox roll?

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.

2018-07-27T13:32:37+00:00Tags: |Comments Off on Can you see how dirty is your anilox roll?

Anilox: convert linescreen and volume

Do you know how to quickly convert your anilox rolls linescreen and volume values between metric and imperial unit measurements? Volume: cm³/m² = BCM/in² x 1,55 (*) BCM/in² = cm³/m² ÷ 1,55 (*) 1,54899999999999 rounded to 1,55 Linescreen: l/cm = lpi ÷ 2,54 lpi = l/cm x 2,54 where: BCM/in² = Billion Cubic Microns per [...]

2018-09-05T19:11:27+00:00Tags: , |Comments Off on Anilox: convert linescreen and volume

Dot dipping (in anilox)

Dot dipping describes the condition whereby the smallest dots on a flexo plate dip into the cells of the anilox roll when forced by the impression between anilox and plate. Some dots of the plate, dipping in the cells, will carry more ink than what was expected, resulting in dirty printing in highlights, typically [...]

2018-07-28T10:26:48+00:00Tags: , , , , , |Comments Off on Dot dipping (in anilox)