DEVELOPING DEVICE FRAME UNIT, DEVELOPING DEVICE, PROCESS CARTRIDGE AND METHOD OF MAKING DEVELOPING DEVICE FRAME UNIT Russian patent published in 2014 - IPC G03G15/08 

FIELD: physics, photography.

SUBSTANCE: present group of inventions relates to electrophotographic image-forming devices. The disclosed frame unit, process cartridge and developing device for supporting a regulating member regulating the layer thickness of developer on a developer carrier include a developing device frame, having a seal forming portion, two end sealing members, each provided at one longitudinal end of the developing device and which is contactable to the surface of a developer carrier to prevent the developer from leaking in an axial direction of the developer carrier when the developer carrier is mounted, a blade sealing member for sealing between a regulating member and the developing device frame to prevent the developer from leaking when the regulating member is mounted, wherein said blade sealing member is an elastomer resin material which is injection-moulded with a metal mould and which is provided in said seal forming portion where said one end sealing member and said other end sealing member are provided, said blade sealing member connecting said one end sealing member and said other end sealing member with each other. A corresponding method of making said elements of the process cartridge is also provided.

EFFECT: present group of inventions enables stabilisation of the mutual position of sealing members.

12 cl, 22 dwg