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User Manual Model 676 LOKPRINT® Printer Operation •
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• 15
with the outer guide contacting the roll. Turn the knob an additional ½ turn
clockwise. This will activate the constant backpressure device.
The second set of guides are located on the decurler just to the left of the stock
registration funnel. Once a stock is loaded and tracking straight through the machine
adjust this set of web guides down to the edges of the stock without deforming the
stock. If a large distance is to be covered - loosen the plastic thumb screw and slide
the collar into the new position - then retighten the thumbscrew. Fine adjustments of
the stocks web position can be made by simply moving the collar as a set in or out. If
the guides are too tight, the stock will have rolled up edges.
PRESSURE ASSEMBLY
373093 (NEW)
SHOULDER BOLT
989995 (NEW)
8-32 NUT
990069 (NEW)
REAR
WEB GUIDE
CENTER
FRAME
Print Head Operation
The print head modules are to be opened and closed for threading of stock and ink.
The unit must also be opened to clean the head and for print head replacement. Later
in the manual, under separate headings, cleaning and replacement will be covered.
For clarity the print stations have been assigned numbers one through three from left
to right. The far-left print station prints the back, it is print station number one. The
center and right print stations print on the top, they are stations two and three. Each
print station has an interlock switch that prevents the printer from running with any or
all print stations in the open position if that print station is assigned in the format
being printed. If a print station is open, the display will read HEAD OPEN
STATION X.
WARNING: DO NOT TOUCH THE PRINT HEAD WITHOUT WEARING THE
ANTI-STATIC GLOVES AND THE ANTI-STATIC WRIST STRAP.
To open the print heads for threading supplies or cleaning pulling the release knob
and then rotating the print head into the open latched position (see figure 5). The top
two print stations have a pin in the rear to hold them open. The bottom print station
will remain open via gravity - however it has a hole in the rear to hold the print head
in a slightly open position to act as a bridge when one is threading stock.