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US 8,740,325 B2Granted
Method for printing in a printer having an inoperable ink reservoir
AssigneeXerox Corporation
InventorsMichael Joseph Dahrea, Michael William Elliot
Life of this patent
Estimating the term…
Abstract
A method for operating a printer includes supplying liquid ink from two ink reservoirs to a printhead to enable the printhead to eject ink drops onto an image receiving substrate. A substrate transport moves the substrate past the printhead at a first speed. In response to detecting an interruption in the supply of liquid ink from one of the two ink reservoirs, the substrate transport moves the image receiving substrate at a slower second speed past the printhead.
Claims14
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.
3 more elements
A printing apparatus, comprising:
- a first ink reservoir, the first ink reservoir being configured to hold liquid ink;
- a first level sensor positioned within the first ink reservoir, the level sensor being configured to identify a level of liquid ink in the first ink reservoir;
- a second ink reservoir, the second ink reservoir being configured to hold liquid ink, 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;
- a second level sensor positioned within the second ink reservoir, the level sensor being configured to identify a level of liquid ink in the second ink reservoir;
- a printhead fluidly coupled to the first ink reservoir and the second ink reservoir, the printhead being configured to eject drops of ink received from the first ink reservoir and the second ink reservoir onto an image receiving substrate;
- a substrate transport, the substrate transport being configured to move the image receiving substrate at a first speed in a process direction past the printhead that is fluidly coupled to the first ink reservoir and the second ink reservoir;
- and
- a controller operatively connected to the substrate transport, the first level sensor, and the second level sensor, the controller being configured to operate the substrate transport to move the image receiving substrate at a second speed in the process direction in response to the controller detecting an interruption in liquid ink being supplied from one of the first ink reservoir and the second ink reservoir to the printhead, the second speed being less than the first speed.
5 more elements
Dependencies are inferred from the claim text.