Page 117 - Training 2019

WEAKNESSES:
The element needs to be checked and cleaned between make readies. The more frequently
this happens the less down time the company will have. It important that the TSC informs
the customer of this. Make a recommendation of purchasing extra elements to speed up a
quicker change over. Or the operator will spend down time on cleaning dirty elements.

One solution is to fit two filters so that one can be cleaned will the other is in use. Very
effective in magazine printing on the first print station where there is a high percentage of
paper dust.

KEY SELLING POINTS:
 Prevents scoring anilox rollers.
 Removes doctor blades metal particles from the ink.
 Increase the life of the diaphragm
 Removes all contamination from the ink.

INTERESTING ARTICLE:
Ask a person ordering anilox rolls what his or her greatest fear is, as it relates to anilox
rolls, and the answer you're likely to get is "that the darned thing will get scored as soon
as we put it in the press." It's a common refrain. Excluding accidental occurrences such as
a blade hold-down screw or other machine part coming into contact with the surface of a
rotating anilox roll, a score on an anilox roll is the result of a tiny, hard particle becoming
wedged under the leading edge of a doctor blade while the anilox roll rotates. This action
creates the characteristic line around the roll's surface that we commonly call a "score
line." Besides the obvious damage to the roll itself, a scored anilox can result in a visible
line in an image, usually darker than the rest of the image, in the web direction. The
defect is often unacceptable and can result in downtime to swap the roll, reposition the
print, or execute some other fix. It can result in delays at downstream operations, material
losses, and a loss of customers. It can result in significant, preventable costs. The
offending particle will likely be delivered to the blade tip via the ink. Filtering the ink in-line
may capture that particle before it reaches the blade. Yet, my observation has been that a
lot of folks are not filtering their inks in-line during press operation. A few years ago, I
visited a client with scoring problems and delivered a presentation on potential sources of
ink contamination. For 45 minutes each session, two sessions, I covered a variety of
conditions and practices that I had observed that could either introduce particulate
contamination into their ink systems or allow already introduced particles to remain
suspended in the ink. We disrupted the day. We covered the obvious and the obscure. We
took pictures. We inspected and discussed new rolls that were damaged. We found
particles in their ink and wash tanks. We discussed in-line ink filtration. They saw the light.
They had a plan.

INK FILTERS TRAINING MANUAL 5
Updated - 24 June 2019