Developing apparatus, processing cartridge, and image forming apparatus
A developing device and imaging equipment technology, which is applied in the fields of electrical recording process equipment, electrical recording technology, optics, etc. that apply charge patterns, and can solve the problems of contact pressure changes and difficulty in obtaining stable contact pressure for a long time
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no. 1 example
[0037] Construction of the main unit
[0038] figure 2 is a schematic diagram of the imaging apparatus according to the first embodiment. This image forming apparatus A is a full-color laser printer for electrophotographic processing. A schematic configuration of the entire image forming apparatus A according to the present invention will be described below.
[0039] A process cartridge B (hereinafter referred to as cartridge B) is formed of a charging device, a developing device D, a cleaning device C, and a photosensitive drum 1 as an integral unit. like figure 2 As shown, four rows of yellow, magenta, cyan, and black cartridges B are detachably arranged in the image forming apparatus A in the vertical direction. The image forming apparatus A forms a full-color image by transferring the toner images formed with the respective cartridges B onto the intermediate transfer belt 20 of the transfer device. The imaging process at the cartridge B will be described in detail l...
no. 2 example
[0068] The regulating member 40 according to the present embodiment is basically the same as that of the first embodiment, and its configuration has the following points of difference. First, if Figure 7A As shown, the regulating member 40 has a second contact portion 49 in which the regulating member 40 is fixedly supported at the upstream side of the developing roller 3 in the direction of rotation thereof by bonding or the like. Next, a sheet holding member 42 a as a supporting unit for supporting the flexible sheet is provided on the downstream side of the developing roller 3 in the direction of rotation thereof. Further, the holding member 42a and the support member 43 fixedly supporting the upstream side are configured to be detachable from each other. Therefore, the process for fixedly supporting the regulating member 40 can be independently performed on the supporting member 43 at the upstream side, and thus the influence of uneven bonding or the like can be minimize...
no. 3 example
[0072] The regulating member 40 according to the third embodiment is basically the same as that of the first embodiment, with the following differences in its configuration. First, if Figure 7B As shown, the point of difference is that the regulating member 40 is fixedly supported by bonding or the like at the downstream side of the developing roller 3 in the direction of rotation thereof. Furthermore, the supporting unit 42 is different in that it is a unit formed integrally with the developer container. Therefore, the assembly process can be made simpler, and the size of the device can be reduced.
[0073] As for the specific supporting method, by fixedly supporting the inner wall surface of the concave portion of the holding member 42 on the downstream side of the developing roller 3 in its rotational direction, in the longitudinal direction of the regulating member 40 via an adhesive layer, At the end, the adjustment member 40 forms a second contact portion 49, such as ...
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