US 11,752,773 B2
Printing agent transfer for 2D and 3D printers
Howard G Wong, Vancouver, WA (US); Wesley Schalk, Vancouver, WA (US); Kris Randall Livingston, Boise, ID (US); and Kenneth Russell Williams, Vancouver, WA (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/298,554
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jul. 8, 2019, PCT No. PCT/US2019/040812
§ 371(c)(1), (2) Date May 29, 2021,
PCT Pub. No. WO2021/006864, PCT Pub. Date Jan. 14, 2021.
Prior Publication US 2022/0118767 A1, Apr. 21, 2022
Int. Cl. B41J 2/175 (2006.01); B29C 64/259 (2017.01); B33Y 30/00 (2015.01)
CPC B41J 2/17546 (2013.01) [B29C 64/259 (2017.08); B41J 2/17566 (2013.01); B41J 2/17596 (2013.01); B33Y 30/00 (2014.12); B41J 2002/17573 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A system to fill or drain a reservoir in a printer, comprising:
a controller to set a unit to a total capacity of a container divided by an integer greater than 1;
a container sensor to sense the container connected to the printer; and
a pump to pump, in set unit increments, at least one unit of a printing agent from the container to the reservoir or from the reservoir to the container.