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B. ESD Control Measures
1. Proper Power Cord & Grounding
- Only use the approved power cord, for the
specific region, as supplied with the printer. The
third prong (ground line) is required for proper
printer operations, personnel safety and circuit
protection. Only attach power cord to a 3-prong
grounded electrical receptacle (refer to section C
below).
2. Installation of Humidifier
- The addition of a humidifier can solve print output problems where relative humidity
(Rh) is too low (i.e. <30% Rh) and/or when mild grounding problems exist.
The addition of a humidifier can reduce the effects of ESD on printed output.
If the humidity in the printing area is increased and the above symptoms
disappear then a grounding issue/ESD problem is likely present, but not
severe. If the addition of a humidifier solves the problem permanently then no
further action may be necessary unless premature cartridge failures occur.
3. Installation of Rear Anti-Static ESD Brush
Installation Kit is determined to be necessary based on your specific region and print
environment)
- Install Rear ESD brush to underside of printers rear
platen surface. Adhere to the following steps when
installing ESD brush:
NOTE:
Attachment of the Anti-Static Rear ESD
brush [part number 221655-00 (60") or 220959-
00 (42")] is performed using double-sided stick
tape. Attach four, one-inch (25 mm) double
stick strips across length of brush at similar
intervals (place each piece of stick strip over
screw mounting holes for approximate location).
a). Clean the rear platen surface with isopropyl alcohol where the tape
strip/brushes will be applied. Allow to dry.
b). Adhere one ESD brush to rear underside surfaces of platen, refer to Figures
A, B and C for approximate ESD brush location (s). A roll of media may need to
be temporarily loaded from the feed roller to determine the proper brush locations
NOTE:
Even with adequate grounding measures
intact, relative humidity should typically be between
45% and 55% in a normal room temperature environment for the
best printing results (ESD suppression and color control).
The suggested optimum temperature range for print
environments is 68-72 degree F. (20-22.2 degrees C.)
NovaJet 800 Series Training Guide
(contact technical support if an ESD Field
46
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