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US 7,350,892 B2Granted
Printing system and method of printing an image in a fixed head printing system
AssigneeHewlett-Packard Development Company, L.P.
InventorSantiago Garcia-Reyero Vinas
Life of this patent
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Abstract
A method of printing an image in a fixed head printer system includes sensing a medium speed of a medium traveling in proximity to a plurality of ink printheads. A maximum optical density of the printer system at the sensed medium speed is determined. The firing frequency of the plurality of ink printheads is adjusted in response to a change in medium speed such that the maximum optical density of the printer system at the sensed medium speed is not exceeded.
Claims18
A method of printing an image in a fixed head printing system, the method comprising:
- receiving desired image resolution data regarding the image;
- sensing a medium speed of a medium traveling in proximity to at least one ink printhead;
- determining a maximum optical density of the printing system at the sensed medium speed;
- and
- adjusting the firing frequency of the at least one ink printheads in response to a change in medium speed such that the firing frequency of the at least one ink printheads equates to a firing frequency resulting in the image being printed at the desired image resolution when the maximum optical density of the printer system is not exceeded, and such that the firing frequency of the at least one ink printheads equates to a maximum firing frequency of the at least one ink printheads when the maximum optical density of the printer system is exceeded.
2 more elements
A fixed head inkjet printing system comprising:
- a fixed printhead assembly including at last one individual printhead, each printhead including a plurality of nozzles;
- a medium speed sensor adapted to sense a speed of the medium moving adjacent to the printing system;
- and
- a controller associated with the fixed printhead assembly and the medium speed sensor, the controller configured to receive desired image resolution data regarding the image and determine a maximum optical density of the printing system, and further configured to adjust the firing frequency of the plurality of nozzles in response to a change in medium speed such that the firing frequency of the at least one ink printheads equates to a firing frequency resulting in the image being printed at the desired image resolution when the maximum optical density of the printer system is not exceeded, and such that the firing frequency of the at least one ink printheads equates to a maximum firing frequency of the at least one ink printheads when the maximum optical density of the printer system is exceeded.
1 more element
A fixed head inkjet printing system comprising:
- means for receiving desired image resolution data regarding the image;
- means for sensing a medium speed of a medium traveling in proximity to at least one ink printhead;
- means for determining a maximum optical density of the printing system of the sensed medium speed;
- and
- means for adjusting the firing frequency of the at least one ink printheads in response to a change in medium speed such that the firing frequency of the at least one ink printheads equates to a firing frequency resulting in the image being printed at the desired image resolution when the maximum optical density of the printer system is not exceeded, and such that the firing frequency of the at least one ink printheads equates to a maximum firing frequency of the at least one ink printheads when the maximum optical density of the printer system is exceeded.
2 more elements
A method of printing an image in a fixed head printing system, the method comprising:
- receiving desired image resolution data regarding the image;
- identifying a medium speed of a medium traveling under a plurality of individual print heads;
- determining a maximum optical density of the printing system at the sensed medium speed;
- and
- altering the firing frequency of the plurality of printheads in response to a change in the medium speed such that the firing frequency of the at least one ink printheads equates to a firing frequency resulting in the image being printed at the desired image resolution when the maximum optical density of the printer system is not exceeded, and such that the firing frequency of the at least one ink printheads equates to a maximum firing frequency of the at least one ink printheads when the maximum optical density of the printer system is exceeded.
2 more elements
Dependencies are inferred from the claim text.