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US 2018/0001642 A1Published application
Printhead cartridge molded with nozzle health sensor
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael W. Cumbie, Brett E. Dahlgren
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Abstract
In some examples, a print cartridge includes a monolithic molding, and a printhead die embedded into a molding. The printhead die has a front surface exposed outside the molding to dispense fluid drops through nozzles and an opposing back surface covered by the molding except at a channel in the molding through which fluid is to pass directly to the back surface. The printhead die also has a nozzle health sensor molded into the molding to detect defective nozzles in the printhead die.
Claims20
A print cartridge comprising:
- a monolithic molding;
- a printhead die embedded into the molding, the printhead die having a front surface exposed outside the molding to dispense fluid drops through nozzles and an opposing back surface covered by the molding except at a channel in the molding through which fluid is to pass directly to the back surface;
- and
- a nozzle health sensor molded into the molding to detect defective nozzles in the printhead die.
1 more element
A print cartridge comprising:
- a housing to contain a printing fluid;
- and
- a printhead supported by the housing and comprising:
- a monolithic molding;
- a printhead die embedded in the molding, the printhead die having a back surface partially covered by the molding, and an exposed front surface having nozzles in the printhead die to eject fluid drops, the molding mounted to the housing and having a channel through which fluid is to pass to the back surface of the printhead die;
- and
- a nozzle health sensor comprising an optical detector, the nozzle health sensor molded into the molding to detect defective nozzles in the printhead die.
4 more elements
Dependencies are inferred from the claim text.