Hewlett-Packard Development Company, L.p.

Byeongno Jeong

Woojin Kim

Sungchul Ahn

Seongho Jeong

Ji-won Moon

Seung-gweon Lee

Woong-Yong Choi

Jinhwa Hong

Yongnam Ahn

Yongil Moon

Yong-kwan Cho

Youngjo Kwon

Joonggwang Shin

A main body of an image forming apparatus includes a developing device, a mounting portion to or from which a toner refill cartridge is attachable or detachable and which is connected to the developing device to transfer a toner in the toner refill cartridge to the developing device. The main body has a housing provided with a communicating hole so that the toner refill cartridge is mountable on the mounting portion from the outside. The image forming apparatus includes the main body, a pop-up module to push the toner refill cartridge in a removal direction and pop up the toner refill cartridge from the mounting portion, and a controller to cause the toner refill cartridge to pop up by operating the pop-up module when refilling with the toner is completed.

Structure to pop up toner refill cartridge from mounting portion

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

Development cartridge for a printer

Growing community of inventors

Suwon-si, South Korea

Byeongno Jeong