M&R CHALLENGER II Series, Руководство пользователя, Страница: 26 / 241

Tri-Loc Pre-Registration System
IMPORTANT: While prepping screens
for the press, it is important NOT to
tape over the corners that were in
contact with the stop blocks. This
will change the frames outside
dimension (O.D.) and effect its regis-
tration when it contacts the stop
blocks on the press.
Since registration relies heavily on
screen tension, it is important to use
screens that are not only tensioned
properly, but also consistently. A
large variance of mesh tension from
one screen to another within the
same job will have an effect on front
to back (North/South) registration
If using two or more master frames
on one exposure unit, it is recom-
mended that each job be burned on
the same master frame to reduce the
number of variables that may affect
registration.
M&R Press Set-Up:
Press registration is achieved by simply locating the screens
to the same three points that were used in the exposure
unit. This is done via a Tri-Loc registration pallet which is
positioned in place of a normal print pallet during set-up.
The positioning of the Tri-Loc pallet will be referred to as the
“Prime Position”. This position will be different on every
press due to the number of presses in the field.
The procedure for finding the “Prime Position” is a one time
operation. The benefits derived from spending the time to
properly set this position will become evident the first time
the Tri-Loc system is put into use.
Press Set-Up Formulas 5070/5090 Series
NOTE: Before starting, it is important
that pallet level and off-contact are
set to specifications. If there is any
question of calibration of your press,
it should be corrected before you
begin. You will realize more of the
advantages the system has to offer if
all printing parameters are correctly
calibrated.
Once it is determined that the press is calibrated properly
(i.e; Pallet Level and Off Contact), adjust the micros on each
print head to their center position. Micros are zeroed when
pointers are centered on the grid blocks. (See Fig. 12)
Now you are ready to install the Tri-Loc pallet and mark the
press for “Prime Position”. Remove one print pallet and
replace it with the Tri-Loc pallet. When installed, the M&R
logo should be facing the operator and the registration stop
blocks will be on the left side.
With the pallet still loose on the arm, manually index the Tri-
Loc pallet under the first print head. Re-arm safety circuits
and reset machine so that the lower carousel is locked in
position with the pallet centered under the print head (for-
mulas = home position). Check clearance between right and
left sides of front stop block and frame holder.
This measurement will vary with size of Tri-Loc pallets but
should be no less than 3/16”. Use right to left micro to
adjust if necessary. (See Fig 13)
Having confirmed clearances, lower the master frame
assembly.
Next, slide the pallet so the front stop block is positioned
(3/16”) beyond the inside front edge of the front frame hold-
er. Once the pallet is positioned properly, securely lock in
place using cam locks. (See Fig. 14)
M&R Printing Equipment, Inc. - Glen Ellyn, Illinois
18
i
IMPORTANT!
Figure 12
Figure 13
i
IMPORTANT!