Back to results
US 11,733,620 B2Granted
Print powder reservoir sealed from atmosphere at lower pressure than atmosphere
AssigneeHewlett-Packard Development Company, L.P.
InventorsJeffrey Harold Luke, Gabriel Scott McDaniel
Life of this patent
Estimating the term…
Abstract
A print material cartridge may include a hopper to maintain an amount of print material therein; and an atmospheric pressure seal to seal the hopper from atmosphere; wherein a pressure within the hopper and sealed by the atmospheric pressure seal is lower than atmosphere.
Claims15
A print powder cartridge, comprising:
- a hopper to maintain an amount of print powder therein;
- and
- an atmospheric pressure seal to seal the hopper from atmosphere;
- wherein a pressure within the hopper and sealed by the atmospheric pressure seal is lower than atmosphere, and
- wherein a removal of the atmospheric pressure seal is to cause an airflow from the atmosphere into the hopper.
2 more elements
A method of aerating a print powder, comprising:
- creating a below-atmosphere pressure within a print powder reservoir of a print cartridge;
- sealing the print powder reservoir with a seal;
- and
- removing the seal to cause an airflow from the atmosphere to aerate a print powder maintained within the print powder reservoir.
1 more element
A print toner cartridge, comprising:
- a print toner reservoir to receive an amount of powder toner therein;
- a seal to seal the print toner reservoir from atmosphere;
- and
- an atmospheric reduction device to reduce the atmospheric pressure within the print toner reservoir after the seal has sealed the toner within the print toner reservoir,
- wherein a removal of the seal is to cause an airflow from the atmosphere into the print toner reservoir.
2 more elements
Dependencies are inferred from the claim text.