A big press is fine, but can it print?
Jump to 2013 and I started a Real Estate Board company with a good friend of mine. We experienced the usual teething issues of most start-ups, but we didn't expect this one! We had a wide format press capable of printing to 2.6 metres wide, which is great, but actually being able to print at good quality wasn't easy. The engineers at HP decided all by themselves that this machine was going to have a maximum vacuum pressure and maximum tension rating. Vacuum is used to suck down the printed material onto a flat platen. Tension is also used to help keep the printed material flat. So between vacuum and tension your media stays flat with no bumps under the print head as it goes back and forth printing the image. Trouble is HP didn't allow the operator enough maximum vacuum or tension, resulting in lumps and bumps in the material, which was then struck by the print head and destroyed. After months of no progress by local HP field engineers, I decided to get inside the head of this machine and work out how it "sensed" what was going on. I found out how to trick the tension system into thinking there was less tension than there actually was, allowing us to increase the tension in the software to BELOW the maximum limit and still have plenty of tension. Next, I purchased $14.00 of air tubing and valves from an aquarium and reset the base vacuum which allowed us to use about 50% vacuum setting. If we used 100% the material would virtually stop dead on the platen, which is how it is supposed to be.
Dennis Wiffrie - Outside Square Business Solutions - Ph: 0417
565 531
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