US 12,491,719 B2
Print cartridge registration systems
Fausto D'Apuzzo, Palo Alto, CA (US); and Yang Lei, Palo Alto, CA (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/275,789
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Feb. 4, 2021, PCT No. PCT/US2021/016671
§ 371(c)(1), (2) Date Aug. 3, 2023,
PCT Pub. No. WO2022/169451, PCT Pub. Date Aug. 11, 2022.
Prior Publication US 2024/0294014 A1, Sep. 5, 2024
Int. Cl. B41J 2/175 (2006.01); G06V 10/10 (2022.01); G06V 10/75 (2022.01); H04N 1/00 (2006.01)
CPC B41J 2/17546 (2013.01) [G06V 10/19 (2022.01); G06V 10/751 (2022.01); H04N 1/00251 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a movable stage to hold a well plate;
a print cartridge holder to hold a print cartridge comprising a print die over the movable stage, wherein the print die is to eject fluid;
a camera located above the movable stage and the print cartridge holder, wherein the camera is positioned such that the movable stage and the print die are within a field of view of the camera;
a processor to calculate a first offset of the well plate and a second offset of the print die based on an image of the movable stage and the print die captured by the camera and to control movement of the movable stage in accordance with the first offset and the second offset; and
a memory to store a template of the print die, wherein the template is compared to the image of the movable stage and the print die captured by the camera to calculate the second offset.