http://www.waynetrademark.com/flexographic-printing-company.html

1
How to Pull an Impression on a Flexographic
Press
2
The key to getting a great looking image from a
press run is pulling a good impression. While
there are many opinions on this term and
procedure, this article will focus on the process
of bringing a substrate into contact with an
inked plate and applying just the right amount of
pressure to get the highest quality results.
3
Before you begin, make sure the main computer is
set to print. Turn off the printing at each
individual station, using its print button,
making sure that the print indicator is not lit.
Start the press in idle.
4
(No Transcript)
5
Begin by going to the first printing station and
pressing the print button, which will start the
printing process. Turn the vertical adjustment
knobs, located on top of the station, clockwise
so that the cylinder goes down and makes contact
with the substrate. Try to keep the pressure
even on both sides of the cylinder as you lower
it.
6
(No Transcript)
7
Turn the horizontal adjustment knobs, located at
the rear of the station, clockwise one-quarter of
a turn, adjusting the plate so that it goes
forward. Again, apply an even amount of
pressure on each side as you make this
adjustment. If its not printing, thats where it
should be for this step. If it is printing,
using the vertical adjustment, back off
one-quarter of a turn, then adjust horizontal
knobs clockwise, again.
8
After the image has begun printing evenly across
the entire width of the printing material, back
off of the vertical adjustment, so that the image
is barely printing.
9
(No Transcript)
10
Keep going up and forward one-quarter of a turn
until the image is not printing. If only one
side is printing, adjust that side only, until it
is not printing.
11
Once you have reached this step, return to the
vertical adjustment. Bring it down until it
makes contact and begins to print. Back off the
horizontal adjustment until it quits printing.
Once more, using the horizontal adjustment,
bring it forward so that it starts printing
evenly.
12
Give both vertical and horizontal adjustments a
quarter turn. That should do it, and you will
have pulled the optimal impression, for both
screen and solid plates!
13
Go to the next station and repeat the procedure.
After you have pulled an impression on the
second station, turn off printing, and move to
the next station. The printing should be turned
off after you finish getting an impression on
each station, except for the first one. This
allows you to align all the remaining plates to
the first, making it easier to get them in
register.
14
The reason for adjusting both vertically and
horizontally is to get just the right amount of
pressure to distribute the ink evenly and cleanly
across the surface of the substrate. If there
is not enough pressure, it will cause skipping,
where the image will fade in and out. If too
much pressure is applied it will cause haloing,
which causes an undesirable outline around parts
of the image
15
Using these procedures should save time and
material, plus produce outstanding results.
16
For more information on label solutions, click
below Wayne Trademark - Flexographic Printing
Division
17
(No Transcript)
18
(No Transcript)