Patent ID: 7198361
Filing Date: 2007-04-03
Classification: B41J

Abstract:
1. An ink jet apparatus, comprising: an ink container which contains ink; an ink jet head which contains ink supplied thereto, and which discharges the ink as ink droplets from at least one nozzle communicating with an inside of the ink jet head; an ink inflow channel via which the ink container and the inside of the ink jet head communicate with each other, and through which the ink is supplied to the ink jet head from the ink container; an inflow driving unit which causes the ink from the ink container to enter the ink jet head via the ink inflow channel; an inflow filter which is provided in the ink inflow channel, and which filters the ink; an ink outflow channel through which the ink flows out from the ink jet head; and an outflow filter which is provided in the ink outflow channel, and which filters the ink; wherein the inflow filter comprises a plurality of through holes, and the outflow filter comprises a plurality of through holes; and wherein each of the through holes of the inflow filter is smaller than each of the through holes of the outflow filter, and the inflow filter has an open area ratio that is higher than an open area ratio of the outflow filter.