Developing apparatus, process cartridge and image forming apparatus
A technology of developing device and imaging device, which is applied in the field of process box, imaging device and developing device, and can solve the problems of developer leakage, twisting of elastic scraper, shading, etc.
Active Publication Date: 2009-01-21
BROTHER KOGYO KK
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[0005] However, in the structure described in JP-A-11-73017, since the pressing force on the developer carrier caused by the downstream sealing member becomes smaller than the pressing force on the developer carrier caused by the upstream sealing member, there is a Defects where developer leaks from between the downstream sealing member and the developer carrier
[0006] In addition, in the structure described in Japanese Patent Application Laid-Open No. 2001-356592, from a microscopic point of view, the pressing force of the elastic scraper relative to the support plate is different between each welded part and each welded part, and twisting occurs on the elastic scraper. bad situation
When twisting occurs on the elastic blade, since the pressing force of the elastic blade relative to the surface of the developer carrier deviates in the axial direction of the developer carrier, the developer carried on the surface of the developer carrier cannot be corrected. The thin layer is limited to a uniform thickness, which, as a result, presents undesirable shading for the image formed on the printing paper
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[0126] FIG. 1 is a side sectional view of main parts showing an embodiment of a laser printer as an image forming apparatus of the present invention. In FIG. 1 , a laser printer 1 includes a feeding unit 4 for feeding printing paper 3 , an image forming unit 5 for forming an image on the supplied printing paper 3 , and the like in a main body casing 2 .
[0127] On one side wall of the main body casing 2, an attachment and detachment port 6 for attaching and detaching a processing (Japanese: prose) box 18 described later is formed, and a front cover 7 for opening and closing the attachment and detachment port 6 is provided. . The front cover 7 is rotatably supported by a cover shaft (not shown) inserted through the lower end thereof. Thus, when the front cover 7 is closed with the cover axis as the center, the attachment and detachment port 6 is closed by the front cover 7, and when the front cover 7 is opened with the cover axis as a fulcrum (during falling), the attachment ...
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The invention relates to a development device, a processing box and an imaging device. A scraper back seal (87) with relatively lower elasticity rate and larger thickness is adhered to a scraper assembling part (46) and a seal configuration part (96), and a sponge sealing member (92) with relatively higher elasticity rate and smaller thickness is adhered to the roller opposite face (98) of the sealing configuration part (96); the scraper back seal (87) and the sponge sealing member (92) are pressed by the plate spring member (57) of a scraper assembly (40) and are gripped between the plate spring member (57) and the scraper assembling part (46) and the seal configuration part (96) in the status that the scraper back seal (87) and the sponge sealing member (92) are compressed to have the same thickness.
Description
technical field [0001] The present invention relates to a developing device, a process box and an imaging device. Background technique [0002] In an image forming apparatus such as a laser printer, a developer image can be carried on the surface of a photosensitive drum by forming an electrostatic latent image on the surface of the photosensitive drum and supplying a developer to the electrostatic latent image from a developing device. And, by printing the developer image on the printing paper, an image is formed on the printing paper. [0003] A developing device includes: a frame body having an opening opening to a photosensitive drum; a developer carrier for carrying developer contained in the frame; and a layer thickness of the developer carried on the developer carrier. Limited spatula. The developer carrier is rotatably supported by the opening of the frame with a part of the surface exposed. Also, the blade is composed of a thin plate-shaped elastic blade extendin...
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IPC IPC(8): G03G15/08G03G15/00
Inventor 佐藤史和石井昌宏中谷祐希子福田紘也板桥奈绪岸勳朗普轮崎丈史
Owner BROTHER KOGYO KK