Patent ID: 8888208
Filing Date: 2014-11-18
Classification: B41J

Abstract:
1. A printing system, comprising: an inkjet cartridge; an ink reservoir; a reversible pump; a first fluid line that couples the ink reservoir and an input port of the inkjet cartridge; a second fluid line that couples the reversible pump and an output port of the inkjet cartridge; a supply of a gas coupled to the ink reservoir; and a controller that repeatedly operates the reversible pump sequentially in a first direction and a second direction, wherein operating the reversible pump in the first direction supplies ink from the ink reservoir to the inkjet cartridge via the first fluid line and operating the reversible pump in the second direction supplies ink from the ink reservoir to the inkjet cartridge via the second fluid line; and wherein the controller causes gas from the supply of the gas to be introduced into the ink reservoir and thereby causes ink to be released through a nozzle of the inkjet cartridge.