US 12,189,326 B2
Structure to detect full state of two reservoirs in waste toner container
Jinsam Park, Seongnam Si (KR); Jinhong Kim, Seongnam Si (KR); Seongwoong Yang, Seongnam Si (KR); and Youngchae Kim, Seongnam Si (KR)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/565,834
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Oct. 12, 2021, PCT No. PCT/US2021/071818
§ 371(c)(1), (2) Date Nov. 30, 2023,
PCT Pub. No. WO2023/277955, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 10-2021-0085960 (KR), filed on Jun. 30, 2021.
Prior Publication US 2024/0264561 A1, Aug. 8, 2024
Int. Cl. G03G 21/12 (2006.01); G01F 23/292 (2006.01); G03G 15/08 (2006.01); G03G 21/10 (2006.01)
CPC G03G 21/12 (2013.01) [G01F 23/2921 (2013.01); G03G 15/0844 (2013.01); G03G 15/0862 (2013.01); G03G 21/105 (2013.01); G03G 2215/0891 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A waste toner container comprising:
a housing having a first reservoir and a second reservoir;
and
a light guide member to connect a light emitting portion with a light receiving portion of a light sensor, the light guide member including a first detection portion and a second detection portion each including a pair of optical surfaces that are apart from each other, wherein the first and second detection portions are provided in the first reservoir and the second reservoir, respectively.