Media curl mitigation system
A printer includes: a motor driving a transport member according to an operational parameter, to transport media along a media path from a media supply to a printhead; a first distance sensor disposed on a first side of the media path to measure a first distance between the media and the first distance sensor; and a controller configured to: receive the measured distance; detect curling of the media based on the first measured distance; and responsive to detecting curling of the media, update the operational parameter at the motor.
1. A printer, comprising:
a motor to drive a transport member according to an operational parameter, to transport media along a media path from a media supply to a printhead;
a first distance sensor disposed on a first side of the media path to measure a first distance between the media and the first distance sensor;
a second distance sensor disposed on a second side of the media path to measure a second distance between the media and the second distance sensor;
a controller configured to:
receive the first distance and second distance;
detect curling of the media based on the first distance and the second distance; and
responsive to detecting curling of the media, update the operational parameter at the motor.
2. The printer of claim 1 , wherein the transport member includes a platen roller adjacent to the printhead and driven by the motor.
3. The printer of claim 1 , wherein the controller is further configured, in order to update the operational parameter, to change a torque applied by the motor.
4. The printer of claim 1 , wherein the controller is further configured, in order to update the operational parameter, to change a speed of the motor.
5. The printer of claim 1 , wherein the controller is further configured, in order to detect curling of the media, to compare the first distance with a first threshold.
6. The printer of claim 1 , wherein the controller is further configured, in order to detect curling of the media, to determine a difference between the first distance and an expected distance.
7. The printer of claim 1 , wherein the controller is further configured, in order to detect curling of the media, to compare the first distance and the second distance to respective thresholds.
8. The printer of claim 1 , wherein the controller is further configured, in order to detect curling of the media, to determine a difference between the first distance and the second distance.
9. A method of media curl mitigation in a printer, the method comprising:
receiving, at a controller of a printer:
a first distance from a first distance sensor disposed on a first side of a media path to measure the first distance between the media and the first distance sensor; and
a second distance from a second distance sensor disposed on a second side of the media path to measure a second distance between the media and the second distance sensor;
detecting, at the controller, curling of the media based on the first distance and the second distance; and
responsive to detecting curling of the media, updating an operational parameter of a motor driving a transport member to transport media along a media path from a media supply to a printhead.
10. The method of claim 9 , wherein the transport member includes a platen roller adjacent to the printhead and driven by the motor.
11. The method of claim 9 , wherein updating the operational parameter comprises changing a torque applied by the motor.
12. The method of claim 9 , wherein updating the operational parameter comprises changing a speed of the motor.
13. The method of claim 9 , wherein detecting curling of the media comprises comparing the first distance with a first threshold.
14. The method of claim 9 , wherein detecting curling of the media comprises determining a difference between the first distance and an expected distance.
15. The method of claim 9 , wherein detecting curling of the media comprises comparing the first distance and the second distance to respective thresholds.
16. The method of claim 9 , wherein detecting curling of the media comprises determining a difference between the first distance and the second distance.