초록 ▼

In an electrophotographic image developing device, a toner chamber, for accommodating toner to be used to develop an image, is arranged to be selectively coupled to one of a toner cartridge and an additional toner holding member. The additional toner holding member functions as an expansion of subst

In an electrophotographic image developing device, a toner chamber, for accommodating toner to be used to develop an image, is arranged to be selectively coupled to one of a toner cartridge and an additional toner holding member. The additional toner holding member functions as an expansion of substantial toner accommodating space in the image developing device. In the toner hopper to be coupled with the toner holding member, the upper surface of the toner accommodated therein is leveled before it is transferred to the toner chamber. Alternately, the cartridge is constructed so that it is able to be coupled with the toner hopper.

대표청구항 ▼

A toner hopper holding toner therein, comprising a toner discharge port extending in a longitudinal direction and having a predetermined length, a gate member arranged at said discharge port being rockable between an operable position and an inoperable position, said port allowing toner to be discha

A toner hopper holding toner therein, comprising a toner discharge port extending in a longitudinal direction and having a predetermined length, a gate member arranged at said discharge port being rockable between an operable position and an inoperable position, said port allowing toner to be discharged therethrough along said predetermined length substantially upon rocking movement of said gate member to its inoperable position, while said discharge port prevents toner from passing therethrough when said gate member is located at its operable position.