Hewlett-packard Development Company, L.p.

Seongho Jeong

Sungchul Ahn

Woojin Kim

Yongil Moon

Byeongno Jeong

Ji-won Moon

Seung-gweon Lee

Woong-Yong Choi

Jinhwa Hong

Yongnam Ahn

Yong-kwan Cho

An example toner refill cartridge includes a body to accommodate toner, a plunger inserted into the body and movably coupled to the body in a longitudinal direction of the body, and capable of pushing the toner out of the body, a toner injection amount detector to detect each of a plurality of movement positions of the plunger in accordance with the movement of the plunger, and a connection interface to connect to an image forming apparatus to transmit a signal corresponding to each of the detected movement position to the image forming apparatus.

Detecting toner injection amount of toner refill cartridge

An example toner refill cartridge includes a body to contain toner, a toner discharge unit, located at a first end portion of the body in a longitudinal direction, to discharge the toner, a plunger, inserted into the body and movable between a top dead position adjacent to a second end portion of the body and a bottom dead position adjacent to the first end portion, to push the toner toward the toner discharge unit, a locking member, removably coupled with the plunger, to lock the plunger at the top dead position, a pulverization member, including a wing portion extending in a radial direction, coupled with the plunger and movable between a first portion adjacent to the first end portion and a second position adjacent to the second end portion, and an elastic member to apply an elastic force to the pulverization member.

Toner refill cartridge with pulverization member activated by elastic force

Development cartridge for a printer

Growing community of inventors

Suwon-si, South Korea

Seongho Jeong