US 11,733,620 B2
Print powder reservoir sealed from atmosphere at lower pressure than atmosphere
Jeffrey Harold Luke, Boise, ID (US); and Gabriel Scott McDaniel, Boise, ID (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/286,887
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Nov. 9, 2018, PCT No. PCT/US2018/059949
§ 371(c)(1), (2) Date Apr. 20, 2021,
PCT Pub. No. WO2020/096610, PCT Pub. Date May 14, 2020.
Prior Publication US 2021/0382413 A1, Dec. 9, 2021
Int. Cl. G03G 15/08 (2006.01); G03G 21/18 (2006.01); G03G 21/20 (2006.01)
CPC G03G 15/0881 (2013.01) [G03G 15/0884 (2013.01); G03G 15/0886 (2013.01); G03G 15/0896 (2013.01); G03G 15/0898 (2013.01); G03G 21/181 (2013.01); G03G 21/1814 (2013.01); G03G 21/1821 (2013.01); G03G 21/1828 (2013.01); G03G 21/206 (2013.01); G03G 2215/0877 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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.