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US 9,849,695 B2Granted
Drying control
AssigneeHewlett-Packard Development Company, L.P.
InventorsMikel Zuza Irurueta, Francisco Javier Perez Gellida
Life of this patent
Estimating the term…
Abstract
A convection dryer device is disclosed. The convection dryer uses a first fan speed before the leading edge of media reaches a first location in a drying area and a second fan speed, faster than the first fan speed, after the leading edge of media reaches first location.
Claims14
A printer, comprising:
- a paper path, the paper path extending underneath a convection dryer, the paper path having at least one media moving device to move media along the paper path;
- a drying area in the paper path underneath the convection dryer;
- a sensor to detect a leading edge of media in the paper path;
- the convection dryer having at least one fan, the at least one fan having multiple speeds;
- a controller, the controller coupled to the at least one fan, the media moving device and the sensor;
- the controller to control the at least one fan to run at a slower fan speed after the leading edge of media reaches a first location in the drying area and a faster fan speed after the leading edge of media reaches a second location in the drying area, where the second location is downstream from the first location in a printing direction.
3 more elements
A method of printing, comprising:
- depositing printing fluid onto media;
- advancing a leading edge of the media, in a printing direction, through a drying area;
- forcing air into the drying area, from a convection dryer, at a first speed until the leading edge reaches a first position in the drying area;
- forcing air into the drying area, from the convection dryer, at a second speed, faster than the first speed, after the leading edge reaches the first position in the drying area.
1 more element
A printer, comprising:
- a paper path, the paper path running underneath a convection dryer, the paper path having at least one media moving device to move media along the paper path;
- a drying area in the paper path underneath the convection dryer;
- a sensor to detect a leading edge of media in the paper path;
- the convection dryer having at least one fan, the at least one fan having a variable speed;
- the convection dryer having a pressure chamber, the at least one fan coupled to the pressure chamber to force air into the pressure chamber;
- the convection dryer having a bottom plate in the pressure chamber, a plurality of holes formed in the bottom plate to allow the pressurized air to flow out of the pressure chamber and into the drying area;
- the convection dryer having a re-circulation baffle that forms a return opening in the drying area, the at least one fan to draw air from the return opening and force it into the pressure chamber;
- a controller, the controller coupled to the at least one fan, the media moving device and the sensor;
- the controller to use a slower fan speed for the at least one fan before the leading edge of media reaches a first location in the drying area and a faster fan speed after the leading edge of media reaches the first location in the drying area.
6 more elements
Dependencies are inferred from the claim text.