Patent ID: 8740325
Filing Date: 2014-06-03
Classification: B41J

Abstract:
1. A method of operating a printing device comprising: supplying liquid ink from a first ink reservoir to a printhead to enable the printhead to eject ink drops onto an image receiving substrate; supplying liquid ink from a second ink reservoir to the printhead to enable the printhead to eject ink drops onto the image receiving substrate, the first and the second ink reservoirs each maintaining a supply of ink that is separate from a supply of ink in the other reservoir; operating a substrate transport to move the image receiving substrate at a first speed in a process direction past the printhead coupled to the first ink reservoir and the second ink reservoir; detecting an interruption in the supply of liquid ink from one of the first ink reservoir and the second reservoir to the printhead; and modifying operation of the substrate transport to move the image receiving substrate at a second speed in the process direction past the printhead coupled to the first ink reservoir and the second ink reservoir in response to the detection of the interruption of liquid ink being supplied from one of the first ink reservoir and second ink reservoir to the printhead, the second speed being lower than the first speed.