The following mechanical and electrical requirements are recommended for reliable online coding: Conveyor Belt - The conveyor belt should be a friction-type, seamless belt to prevent corrugated cases from slipping on the belt. If a seamless belt is unavailable use a belt with an endless splice or hidden lace.
The frame should have a flat steel table top under the belt.
The drive motor should be direct or timing belt driven.
The guide rails must guide the case smoothly to within 1/10" of the printhead and must be able to keep the carton square to the printhead. It is recommended that the guide rails completely protect the printheads and ink systems from damage that could result from irregular cartons or open flaps.
The printhead should be installed on a freestanding bracket, or other type of freestanding assembly. All vibration from other equipment or case transfer must be kept away from the print station by either bracing or modifying the conveyor system.
There can be no side-to-side motion. Inconsistent belt tracking may cause poor print quality and/or wavy bar codes.
The use of a non-slipping encoder wheel is recommended in order to produce accurate and readable bar codes.
Make sure the substrate does not come in contact with the orifice plate. If the substrate is allowed to contact the orifice plate, this can cause undo wear and tear on the plate, and cause debris to block the orifice plate.
Using the printhead maintenance spray recommended by your system manufacturer, lightly wipe the orifice plate across the short dimension of the orifice plate. Too much pressure can scratch the orifice plate, and push debris into the orifices, thus making it difficult to remove the debris during normal cleaning procedures.
Wipe the printhead only with Trident approved clean room wipes (Part number: 9700-0100-01), or equivalent clean room wipes. Using "normal" paper towels, or shop clothes can push debris into the orifices. Samples of your current wipe materials can be sent to Trident for evaluation and approval.
Glue machines and case erectors may create glue strands (angel hair) that will stick to the printhead due to the printhead being heated to between 60ºC - 70ºC. The glue blocks the orifices or channels in the Chamber Plate/Orifice Plate, which causes poor print quality. It is important to adjust all glue equipment (correct setup, correct temperature, correct nozzle, and correct adhesive) to eliminate excess glue. A brush or roller assembly can be installed upstream to help prevent glue strands from reaching the printheads.
It is recommended that all Trident Powered Ink Jet Systems receive electrical power from a dedicated plant power source. The electrical supply for the ink jet system should be used solely for the ink jet system to decrease the risk of failure due to power line interference.
Preventive maintenance procedures that are outlined in the system manual should be followed and documented on a daily, weekly and annual basis.
Trident, An ITW Company
1 Research Park Dr.
St. Charles, MO 63304 USA