公开(公告)号：US20210232061A1

公开(公告)日：2021-07-29

申请号：US17051081

申请日：2019-03-01

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Yong-Kwan CHO ,  Seung Gweon LEE ,  Jiwon MOON ,  Woongyong CHOI ,  Yongil MOON ,  Yongnam AHN ,  Jinhwa HONG

IPC: G03G15/08 ,  G03G21/18

Abstract: A printer includes a main body; a development cartridge attachable to and detachable from the main body, the development cartridge comprising a developing portion in which a photoconductive drum and a developing roller are provided, a waste toner container to receive waste toner removed from the photoconductive drum, a toner container connected to the developing portion and to receive toner, and a toner refilling portion connected to the toner container and to refill toner through the toner refilling portion into the toner container; and a communicating portion provided in the main body to be connected to the toner refilling portion to provide an access the toner refilling portion from outside of the main body when the development cartridge is attached to the main body.

公开(公告)号：US20210116838A1

公开(公告)日：2021-04-22

申请号：US17047534

申请日：2019-03-21

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Yongnam AHN ,  Woongyong CHOI

IPC: G03G15/08 ,  G03G21/16

Abstract: A toner cartridge includes a hollow body having an inner space in which toner is received and a toner discharge portion through which the toner is discharged, a plunger accommodated in the inner space to be movable in a longitudinal direction along the inner space and configured to push the toner through the toner discharge portion to outside of the body, a first hook provided on the body, and a second hook. The second hook has a shape complementary to a shape of the first hook, is provided on the plunger, and is elastically coupled to the first hook when the plunger reaches a bottom dead position.