DEVELOPER SUPPLY CONTAINER AND DEVELOPER SUPPLY SYSTEM Russian patent published in 2018 - IPC G03G15/08 

FIELD: image forming devices.

SUBSTANCE: present invention relates to a developer supply container detachably mounted in the developer replenishment device, and to a developer supply system including such developer replenishment devices. Claimed group of inventions comprises a powder container configured to be inserted into an image forming apparatus and an image forming apparatus. In this case, developer supply container comprises a developer holding portion configured to house the developer, an outlet port formed and disposed so that, in order to allow the developer to discharge in the said developer holding portion, the outlet opening having an area not greater than 12.6 mm², a driving force reception portion configured and arranged to receive a driving force, and a pump part configured and arranged to act on the developer holding portion with the driving force received by the said driving force receiving portion, to alternately change the internal pressure of the said developer holding portion between a pressure lower than ambient pressure and a pressure higher than the ambient pressure, to discharge the developer through the said outlet.

EFFECT: technical result consists in provision of developer supply container and developer supply system, in which the internal pressure of the developer supply container is made negative, so that the developer in the developer supply container loosens properly.

47 cl, 2 tbl, 68 dwg