Coating apparatus and its ink filling method

• Main Authors: TOMOEDA, SATOSHI, SHISHINO, KAZUYUKI, IZUMIDA, SHINYA
• Format: Patent
• Language: Chinese; English
• Published: 16.09.2009
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; NOZZLES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; STAMPS; TRANSPORTING; TYPEWRITERS

The present invention is to address the issue of poor ejection of a nozzle in a coating apparatus having a complicated ink supply pipeline. The solution of this invention provides a coating device with an inkjet printhead, comprising: first means for imposing negative pressure; second means for imposing low pressure; third means for imposing high pressure; control means; a switch valve disposed in the ink supplement and supply pipeline and controlled by the means mentioned above; and a plurality of switching valves included in the additional pressure pipeline of the main tank. The low pressure is imposed to the tank for filling ink to the ejection tip of the nozzle; the high pressure is imposed to the tank for ejecting residual air in the supply pipeline. During the predetermined negative pressure is imposed to the tank to form a meniscus shape for printing, the pressure supply sources, the switch valve and the switching valves are controlled so as to switch the high pressure imposed to the tank to the low pr