公开(公告)号：US20210232064A1

公开(公告)日：2021-07-29

申请号：US17051084

申请日：2019-04-30

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

Inventor： Yong-Kwan CHO ,  Woong-Yong CHOI

IPC: G03G15/08 ,  G03G21/16

Abstract: A printer includes a main body, a development cartridge attachable to and detachable from the main body, the development cartridge to supply toner contained in a toner container to an electrostatic latent image formed on a photoconductor, to form a visible toner image, a mounting portion including a toner inlet portion connected to the toner container, where a toner cartridge usable to refill toner in the toner container is mountable to the mounting portion, an inlet shutter rotatably provided in the mounting portion to be rotatable together with the toner cartridge, the inlet shutter rotatable between a blocking position to block the toner inlet portion from receiving toner and an inlet position to open the toner inlet portion to receive toner, a locking unit to selectively lock and unlock the inlet shutter, and a controller to control the locking unit to selectively lock and unlock the inlet shutter based on whether the toner cartridge is mounted to the mounting portion.

公开(公告)号：US20210162666A1

公开(公告)日：2021-06-03

申请号：US17047211

申请日：2018-08-30

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

Inventor： Ji-Won MOON ,  Min-Chul LEE ,  Woong-Yong CHOI ,  Matthew James STOREY ,  Jefferson Blake WEST ,  Zackary Thomas HICKMAN

IPC: B29C64/255 ,  B29C64/209 ,  B29C64/241 ,  B33Y30/00

Abstract: Examples of a print a print particle replenishment device are described. In some examples, a print particle replenishment device includes a rotating member to rotate about a central axis of the print particle replenishment device. In some examples, the rotating member includes an opening offset from the central axis. In some examples of a print particle replenishment device, a nozzle is offset from the central axis, where the nozzle is to slide with respect to an interior plane of the rotating member to align with the opening to transfer print particles through the nozzle and opening when in an open position. In some examples, a print particle replenishment device includes an extension that protrudes with respect to the opening to engage a port cover of a host device to move the port cover to open a port for replenishment at rotation.

公开(公告)号：US20210263448A1

公开(公告)日：2021-08-26

申请号：US17059592

申请日：2019-08-09

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

Inventor： Seung-Gweon LEE ,  Woong-Yong CHOI ,  Jinhwa HONG ,  Ji-Won MOON

IPC: G03G15/08 ,  G03G21/18

Abstract: A toner refill cartridge includes a body including a toner chamber containing toner and a toner discharging portion having an entrance connected to one end of the toner chamber in a length direction and an exit to discharge toner outside of the toner refill cartridge, a plunger including a piston that is movably inserted into the toner chamber in the length direction and a packing member located at an end of the piston to push the toner toward the toner discharging portion, a weight part movably accommodated in the toner chamber and having a shape which prevents the weight part from passing through the entrance, and a weight part container provided in the one end of the toner chamber in the length direction such that the weight part can be accommodated therein.