US 12,271,120 B2
Toner refill cartridge having pump for automatic toner refilling
Shinhyup Kang, Seongnam Si (KR); Yongnam Ahn, Seongnam Si (KR); Jinhwa Hong, Seongnam Si (KR); and Junhui Kim, Seongnam Si (KR)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/292,334
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jan. 5, 2022, PCT No. PCT/US2022/070029
§ 371(c)(1), (2) Date Jan. 25, 2024,
PCT Pub. No. WO2023/019032, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 10-2021-0106233 (KR), filed on Aug. 11, 2021.
Prior Publication US 2024/0345507 A1, Oct. 17, 2024
Int. Cl. G03G 15/08 (2006.01)
CPC G03G 15/0868 (2013.01) 15 Claims
OG exemplary drawing
 
1. A toner refill cartridge comprising:
a housing having an opening;
a toner storage portion inside the housing and to store a toner;
a toner discharge portion at an end of the toner storage portion and to discharge the toner;
a pump comprising a variable volume member capable of retracting and expanding, the pump to provide pressure, through a volume change of the variable volume member, for discharging the toner;
a driving force input portion rotatable by a driving force received from outside the toner refill cartridge; and
a driving force transmission portion to receive a rotational force of the driving force input portion, convert the rotational force into a force for changing a volume of the variable volume member, and transmit the force to the pump,
wherein a retraction direction of the variable volume member is the same as a toner discharge direction of the toner discharge portion, and the variable volume member is arranged on an opposite side of the toner discharge portion from the toner discharge portion, and the toner storage portion is between the variable volume member and the toner discharge portion, and
the driving force input portion is arranged on at least one side of the toner discharge portion, and the driving force input portion and the toner discharge portion are exposed to the outside through the opening of the housing.