Print substance output adjustments
AssigneeHewlett-Packard Development Company, L.P.
InventorDonald J. Fasen
Life of this patent
Estimating the term…
Abstract
In an example, a printing device may include a cartridge including a print substance, a belt, and a controller including a processing resource and a memory resource. The processing resource may execute instructions to deposit a plurality of patches of the print substance from the cartridge onto the belt to determine a cartridge density based on a density of a sub-set of patches of the plurality of patches; and adjust a print substance output of the cartridge based on the determined density of the print substance in the cartridge.
Claims12
A printing device, comprising:
- a cartridge including a print substance;
- a belt;
- and
- a controller, comprising:
- a processing resource;
- and
- a memory resource including a non-transitory machine-readable instructions executable by the processing resource to:
- deposit a plurality of patches of the print substance from the cartridge onto the belt;
- determine a cartridge density based on a density of a sub-set of patches of the plurality of patches;
- and
- adjust a print substance output of the cartridge based on the determined cartridge density, wherein the instructions to adjust the print substance output of the cartridge comprise instructions to decrease the print substance output in response to the determined cartridge density being above a predetermined density threshold.
A non-transitory machine-readable medium storing instructions that, when executed by a processing resource, cause the processing resource to:
- deposit a plurality of patches of print substance from a cartridge of a printing device onto a belt of the printing device;
- determine, during an output calibration of the cartridge, a cartridge density based on a sub-set of patches of the plurality of patches;
- compare the determined density of the sub-set of patches to a predetermined range of density values;
- determine whether the determined density of the sub-set of patches is less than a density value included in the predetermined range of density values;
- and
- in response to determining that the determined density of the different sub-set of patches is greater than the density value included in the predetermined range of density values, decrease the print substance output.
A method, comprising:
- depositing, by a printing device, a plurality of patches of print substance from a cartridge of the printing device onto a belt of the printing device;
- determining, by a sensor of the printing device during a first output calibration of the cartridge, a cartridge density based on an average density of a sub-set of patches of the plurality of patches;
- comparing, by a controller of the printing device, the determined density of the sub-set of patches at the first output calibration of the cartridge to a predetermined range of density values;
- decreasing, by the printing device, a print substance output of the cartridge based on the comparison of the determined density of the sub-set of patches to the predetermined range of density values;
- and
- determining, during a second output calibration of the cartridge, the cartridge density based on a calculated average density of a different sub-set of patches of the plurality of patches deposited by the printing device during the second output calibration, wherein the first and the second output calibrations occur at predetermined intervals that are based on an amount of print media output.
Dependencies are inferred from the claim text.