Method of adjusting printing resolution to avoid conditions of poor pen performance in an inkjet printing system, and systems
AssigneeHewlett-Packard Development Company, L.P.
InventorsSantiago Garcia Reyero, Cesar Fernandez, Robert F. Little
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Abstract
Exemplary embodiments of the invention include methods of adjusting the print resolution of an inkjet printhead having a region of poor performance such that printing occurs outside the region of poor performance. Exemplary embodiments also include systems utilizing the methods.
Claims25
A method of adjusting printing resolution to avoid conditions of poor performance in an inkjet printing system, the printing system having a base resolution, the method comprising:
- selecting a new print resolution higher than the base resolution;
- mapping print data from the base resolution to the new resolution, while substantially preserving the optical density of the base resolution;
- and
- re-ordering the print data in the new print resolution to avoid conditions of poor performance.
A method of adjusting printing resolution to avoid conditions of poor performance in an industrial inkjet printing system due to printhead puddling, the printing system having a base resolution, the method comprising:
- selecting a new print resolution higher than the base resolution, the new resolution and base resolution both multiples of a common base resolution;
- mapping print data from the base resolution to the new resolution, while substantially preserving the optical density of the base resolution by substantially preserving the total number of ink drops to be fired;
- and
- re-ordering the print data in the new print resolution to avoid conditions of poor performance by ensuring either that successive drops are contiguous, or that at least two non-firing times between drops.
An inkjet printing system having a base printing resolution, comprising:
- a printhead;
- a controller, the controller configured to adjust printing resolution to avoid conditions of poor performance of the printhead by:
- selecting a new print resolution higher than the base resolution;
- mapping print data from the base resolution to the new resolution, while substantially preserving the optical density of the base resolution;
- and
- re-ordering the print data in the new print resolution to avoid conditions of poor performance.
An inkjet printing system having a base printing resolution, comprising:
- a printhead;
- a controller, the controller configured to adjust printing resolution to avoid conditions of poor performance of the printhead by:
- selecting a new print resolution higher than the base resolution, the new resolution and base resolution both multiples of a common base resolution;
- mapping print data from the base resolution to the new resolution, while substantially preserving the optical density of the base resolution by substantially preserving the total number of ink drops to be fired;
- and
- re-ordering the print data in the new print resolution to avoid conditions of poor performance by ensuring either that successive drops are contiguous, or that at least two non-firing times between drops.
A method of operating an inkjet pen over a continuous range of scan rates while reducing print quality defects resulting from non-optimum nozzle firing rates, the inkjet pen configured to receive print data representing a sequence of individual drops, the method comprising:
- resealing print data to a higher print resolution, and
- re-ordering the sequence of individual drops to substantially avoid non-optimum nozzle firing rates.
Dependencies are inferred from the claim text.