| 摘要 |
PURPOSE:To prevent occurrences of a change in discharge characteristics resulting from foaming and that of contamination of the devices etc. by providing an anti-foaming device having a lattice type heating portion within an ink circulating passage. CONSTITUTION:A foam breaking device 20 is provided in an ink circulating passage. The foam breaking device 20 consists of metal netting 21, high polymer netting 22 and nichrome wire 23; and foams generated by circulation of the ink are designed to pass through a lattice type heating position to be broken, solving all problems connected with foaming. As a matter of fact, moving of foams is temporarily interrupted by the lattice, and having all foams be in contact with the lattice to efficiently perform foam breaking, resulting in a constitution of a compact and high thermal efficiency heater. In addition, if foams are continuously exposed to melt and water-repellent high polymer, owing to differences in wetting characteristics of the members, foams become more susceptible to breaking. It is compact, and heat generation is small, therefore, change in properties of ink or increase in power consumption is not brought about, and a prolonged, stabilized printing is feasible. |
