Patent ID: 7758136
Filing Date: 2010-07-20
Classification: B41J

Abstract:
1. An ink supply device for an inkjet printer which supplies ink to an inkjet head via an ink supply channel from an ink tank storing ink, the ink supply device comprising: a printing duty pre-reading device which previously reads a printing duty from print data; an average flow calculation device which calculates an average flow of the ink passing through a pressure loss region in the ink supply channel in a prescribed minimum time period after a pre-reading time differential set in the printing duty pre-reading device, from the printing duty read by the printing duty pre-reading device; and a flow rate adjustment device which is provided on an upstream side of the pressure loss region in the ink supply channel and controls a flow rate of the ink passing through the pressure loss region in the ink supply channel to a prescribed flow rate, continuously with respect to the printing duty, in accordance with the average flow of the ink passing through the pressure loss region in the ink supply channel in the prescribed minimum time period calculated by the average flow calculation device.