Control of air-based media dryer
AssigneeHewlett-Packard Development Company, L.P.
InventorsFrancisco Javier Perez Gellida, Roger Bastardas Puigoriol, Mikel Zuza Irurueta
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Abstract
Examples are provided of controlling sheet media dryers. A controller operates a fan at plural duty cycles and correlates a resulting air pressure to each to define empirical data pairs. A parabolic curve fit to the empirical data is used to derive additional data pairs, and a lookup table is defined using the empirical and derived data pairs. The controller uses the lookup table to operate the fan during normal operations of a sheet media dryer.
Claims15
A method performed using a controller for a drying system, comprising:
- driving a fan at a plurality of distinct duty cycles;
- correlating each of the duty cycles with a resulting air pressure to define empirical data pairs;
- calculating derived data pairs by way of a parabolic curve fit through the empirical data pairs;
- defining a lookup table including the empirical data pairs and the derived data pairs;
- and
- operating the fan in accordance with a media to be dried by way of the lookup table.
A system, comprising:
- a pressure sensor to sense static pressure within a manifold of an air-based media dryer and provide a corresponding signal;
- a fan to drive air flow through the manifold;
- a controller coupled to the pressure sensor and the fan, the controller to operate the fan at a plurality of duty cycles and correlate each with a resulting pressure to define respective empirical data pairs, the controller to derive one or more data pairs using a parabolic curve fit through the empirical data pairs, the controller to define a lookup table including the empirical and the derived data pairs, the controller to control the fan by way of the lookup table.
A printing apparatus, comprising:
- a master controller;
- a print engine for forming images on sheet media using ink, the print engine controlled by the master controller;
- an air-based dryer for drying ink deposited onto sheet media and coupled to the master controller, the air-based dryer including a pressure controller and a temperature controller, the pressure controller to generate a lookup table of empirical data pairs and derived data pairs, each data pair including a fan duty cycle correlated to an air pressure value, the pressure controller to use the lookup table to control air pressure within the air dryer during operation of the printing apparatus.
Dependencies are inferred from the claim text.