ATMOSPHERIC PRESSURE CHAMBER IN AN INK JET SYSTEM PRINTER

摘要

An ink liquid supply system for an ink jet system printer includes an atmospheric pressure chamber interposed between an ink tank and a pressurizing pump. An air buffer is immersed in an ink liquid contained in the atmospheric pressure chamber. The air buffer is surrounded by a resilient wall and the inside of the air buffer is communicated with the atmosphere through an air inlet. When the ink liquid contained in the atmospheric pressure chamber freezes, the expansion of the ink liquid is absorbed by the air buffer, thereby preventing the explosion of the atmospheric pressure chamber.