PROCESS CARTRIDGE AND IMAGE FORMING DEVICE Russian patent published in 2019 - IPC G03G15/08 

FIELD: image forming devices.

SUBSTANCE: present invention relates to a process cartridge that is replaceable in an image forming apparatus and an image forming apparatus including a process cartridge. Disclosed group of inventions includes image forming device and process cartridge. Process cartridge comprises a photosensitive drum, a rotatable developing roller configured to develop an electrostatic latent image formed on said photosensitive drum, rotatable developer feeding roller, which is provided in contact with said development roller and is made with possibility to supply developer to said development roller, developer receiving chamber, made with possibility to receive developer, a developing chamber in which said developer supply roller is provided, a rotatable transmitting element provided in said developer receiving chamber and configured to transmit developer from said developer receiving chamber to said developing chamber by moving developer upward against gravity, receiving driving force section provided on said developer feeding roller and configured to receive from outside of said process cartridge drive force to rotate said developer feeding roller, said developing roller and said transfer member, first driving force transmitting portion provided on said developer feeding roller and configured to transmit driving force received by said driving force receiving portion, on said development roller and second driving force transmitting portion provided on said development roller and configured to transmit driving force from said first driving force transmitting portion to said development roller, wherein said developer feeding roller and said development roller are rotated so that surfaces of said developer feeding roller and said developing roller move in same direction in contact portion between them and surface of said developer feeding roller moves towards bottom of said developing chamber from said contact portion, and wherein the peripheral speed of the surface of the above-mentioned developer feeding roller is higher than that of the above-mentioned development roller.

EFFECT: technical result is to provide a process cartridge and an imaging device, in which in the structure in which the developer is drawn from the developer accommodating chamber provided below the developing chamber, to the developing chamber above the developer storing chamber providing reducing residual developer thus reducing the number of parts.

21 cl, 26 dwg