Method and system for avoiding bottom of page printing artifacts
AssigneeLexmark International, Inc.
InventorsKenneth Linville, Michael Marra, Randall Mayo, John Writt
Life of this patent
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Abstract
Method and devices for reducing printing artifacts. In one embodiment, a method includes directing ink onto a medium, the medium having a trailing edge; tracking the position of the medium in relation to a nip roller; adjusting the direction of ink onto the medium a first time when the trailing edge of the medium is in close proximity to the nip roller; and adjusting the direction of ink onto the medium a second time.
Claims71
A method of reducing printing artifacts, the method comprising:
- printing on print media using a first set of nozzles;
- controlling movement of the print media out of a feedroll nip;
- and
- printing on the print media using a second set of nozzles.
A method of reducing printing artifacts, the method comprising:
- printing on print media using a first set of nozzles;
- detecting a nip jump;
- and
- printing on the print media using a second set of nozzles.
A method for reducing printing artifacts, the method comprising:
- directing ink onto a medium, the medium having a trailing edge;
- tracking the position of the medium in relation to a nip roller;
- adjusting the direction of ink onto the medium a first time when the trailing edge of the medium is in close proximity to the nip roller;
- and
- adjusting the direction of ink onto the medium a second time.
A system for reducing printing artifacts, the system comprising:
- a printing apparatus including:
- a feedroll in combination with a nip roller configured to feed print media through the printing apparatus,
- an exit roller configured to feed print media out of the printing apparatus, and
- a printhead including a plurality of nozzles in communication with a supply of a printing substance;
- and
- a driver configured to provide directions to move the print media between the feedroll, the nip roller, and the exit roller, to instruct a first set of the plurality of nozzles to apply a printing substance to the print media before the print media exits the feedroll nip, and to instruct a second set of the plurality of nozzles to apply a printing substance to the print media after the print media exits the feedroll nip.
A printing apparatus comprising:
- a feedroll in combination with a nip roller forming a feedroll nip therebetween and configured to feed print media through the printing apparatus;
- an exit roller configured to feed print media out of the printing apparatus;
- a printhead including a plurality of nozzles and in communication with a supply of a printing substance;
- and
- a processor configured to provide directions to move the print media between the feedroll, the nip roller, and the exit roller in a longitudinal direction, to activate a first set of the plurality of nozzles before the print media exits the feedroll nip, and to activate a second set of the plurality of nozzles after the print media exits the feedroll nip.
A printhead configured to print an image on a print media, the printhead comprising:
- a plurality of nozzles configured to apply a printing substance to a print media;
- and
- a controller configured to instruct the printhead to use a first set of the plurality of nozzles to apply a print substance to the print media before the print media exits the feedroll nip and to use a second set of the plurality of nozzles to apply a print substance to the print media after the print media exits the feedroll nip.
Computer-readable media containing instructions for:
- determining a first set of nozzles;
- printing on the print media with the first set of nozzles before the print media exits a feedroll nip;
- determining a second set of nozzles;
- and
- printing on the print media with the second set of nozzles after the print media exits the feedroll nip.
Dependencies are inferred from the claim text.