Developer conditioning assembly and process cartridge

Abstract

The present application provides a developer regulating assembly for a process cartridge installed in a process cartridge, the developer regulating assembly for installation in a developing unit having a developing housing and a developing member rotatably installed in the developing housing, a portion of the developer regulating assembly for contact with the developing member, the developer regulating assembly including a regulating member and a pressing member, the regulating member being clamped by the pressing member and the developing housing, a portion of the pressing member for combination with the developing housing, the pressing member and the regulating member, the regulating member and the developing housing being in plane contact; in this way, the regulating member does not generate a gap due to wave deformation to prevent developer leakage, thereby improving the sealing of the process cartridge.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrophotographic imaging, and in particular to a process cartridge detachably installed in an electrophotographic imaging device and a developer regulating assembly provided in the process cartridge. BACKGROUND

[0002] A process cartridge detachably installed in an electrophotographic imaging device (hereinafter referred to as "imaging device") is provided, which includes at least a developing unit, and a photosensitive unit provided with a photosensitive member, which can be installed in the imaging device in combination with the developing unit (integrated process cartridge), or can be fixedly provided in the imaging device, with the developing unit directly installed in the imaging device, or the developing unit can be detachably combined with the photosensitive unit (separated process cartridge).

[0003] The developing unit for storing the developer includes a developing member rotatably provided therein, which is used to carry and transport the developer to the photosensitive member in close proximity thereto, so as to develop the latent image on the surface of the photosensitive member.

[0004] In order to uniformly distribute the developer on the surface of the developing member, the existing developing unit is provided with a developer regulating member in contact with the outer periphery of the developing member, which generally includes a bracket and a blade in a sheet structure, the blade being used to contact the developing member, and the blade being provided in combination with the bracket, and then the bracket is installed on the housing of the developing unit by means of screws, and at the same time, in order to prevent the developer from leaking out, a sponge is provided between the developer regulating member and the housing, which is pasted to the housing by means of double-sided adhesive tape, and after the developer regulating member is installed, the sponge is pressed towards the housing.

[0005] The above-mentioned blade is generally made of plastic or other materials, and the screws are generally fixed at both ends of the blade / holder, and during the installation of the developer regulating member, the screws are fastened to different depths, which will cause uneven stress on the blade and cause the blade to be "waved" and deformed, resulting in a gap between the blade and the sponge and poor sealing effect of the developer leaking out. SUMMARY

[0006] The present application provides a process cartridge and a developer regulating assembly provided therein to solve the problem of poor sealing effect.

[0007] The specific scheme is as follows:

[0008] A developer regulating assembly for installation in a developing unit having a developing housing and a developing member rotatably disposed in the developing housing, a portion of the developer regulating assembly being for contact with the developing member, the developer regulating assembly comprising a regulating member and a pressing member, the regulating member being clamped by the pressing member and the developing housing, a portion of the pressing member being for engagement with the developing housing, the pressing member and the regulating member, the regulating member and the developing housing being in planar contact.

[0009] The regulating member has an upper surface facing upward and a lower surface facing downward, the pressing member has a second surface facing downward, the upper surface being for contact with the second surface, the lower surface being for contact with the developing housing, the upper surface, the lower surface and the second surface being planar.

[0010] The planar surfaces are parallel to an axis of rotation of the developing member.

[0011] The regulating member is made of a non-metallic flexible material.

[0012] The regulating member is in a sheet-like structure extending in a left-right direction and a front-rear direction, the regulating member being provided with a first positioning portion for positioning the regulating member and a first mounting portion for mounting the regulating member.

[0013] The pressing member has a first engagement portion for engagement with the first positioning portion to position the pressing member and the regulating member and a second engagement portion for engagement with the first mounting portion to mount the pressing member and the regulating member.

[0014] The developer regulating assembly is further provided with a clamping portion for clamping with the developing housing / pressing member to mount the pressing member and the regulating member.

[0015] The pressing member is in a sheet-like structure extending in the left-right direction and the front-rear direction, at least one of the first engagement portion and the second engagement portion being in a hole / post extending in an up-down direction.

[0016] The pressing member comprises a first portion extending in the left-right direction and the front-rear direction and a second portion extending in the left-right direction and the up-down direction, the first portion and the second portion being integrally formed or separately formed, the pressing member further having a first surface facing upward, the first surface and a second surface being provided on the first portion, the second portion extending upward from the first surface.

[0017] The present application further provides a process cartridge comprising a developing housing and a developing member rotatably disposed in the developing housing, the process cartridge further comprising the developer regulating assembly as described above, a portion of the developer regulating assembly being for contact with the developing member. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the processing cartridge to which the present application relates.

[0019] Figure 2 is a perspective view of the developing unit to which the present application relates.

[0020] Figure 3 is a partial exploded view of the developing unit to which the first embodiment of the present application relates.

[0021] Figure 4 is a perspective view of the pressure member in the developer regulating assembly to which the first embodiment of the present application relates.

[0022] Figure 5A and Figure 5B is a perspective view of the developing housing to which the first embodiment of the present application relates.

[0023] Figure 6 is a partial exploded view of the developing unit to which the second embodiment of the present application relates.

[0024] Figure 7 is a perspective view of the pressure member in the developer regulating assembly to which the second embodiment of the present application relates. DETAILED DESCRIPTION

[0025] As described in the background section, the processing cartridge at least includes a developing unit, and the solution of the present application is applicable to both the integrated processing cartridge and the split processing cartridge, and the present application will take the integrated processing cartridge as an example to describe the solution.

[0026] For the sake of clear and accurate description, the following definitions are made: taking the state shown in Figure 3 as the reference, the length direction / longitudinal direction of the processing cartridge is defined as the left-right direction, the width direction / lateral direction of the processing cartridge is defined as the front-rear direction, and the height direction / vertical direction of the processing cartridge is defined as the up-down direction, the left-right direction, the front-rear direction and the up-down direction intersect with each other, and preferably, the left-right direction, the front-rear direction and the up-down direction are perpendicular to each other.

[0027] Figure 1 is a perspective view of the processing cartridge to which the present application relates; Figure 2 is a perspective view of the developing unit to which the present application relates.

[0028] As described in the background section, the processing cartridge at least includes a developing unit, and the solution of the present application is applicable to both the integrated processing cartridge and the split processing cartridge, and the present application will take the integrated processing cartridge as an example to describe the solution. Figure 1 and Figure 2As shown, the processing cartridge 100 comprises a photosensitive unit 1 and a developing unit 2 combined with each other, the photosensitive unit 1 comprises a photosensitive shell 11 and a photosensitive member 12 rotatably arranged in the photosensitive shell 11, the photosensitive member 12 has an axis of rotation X12, the developing unit 2 comprises a developing shell 21 and a developing member 22 rotatably arranged in the developing shell 21, the developing member 22 has an axis of rotation X22, the developing shell 21 is used for containing a developing agent, and the developing member 22 is arranged opposite to the photosensitive member 12 to transport the developing agent to the photosensitive member 12 to develop an electrostatic latent image on the surface of the photosensitive member 12.

[0029] The processing cartridge 100 further comprises a driving force receiving member 3 arranged at a longitudinal end thereof and an electrically conductive member (not shown), the driving force receiving member 3 is used for receiving a driving force from the image forming device, and the electrically conductive member is used for receiving an electric power from the image forming device, the driving force receiving member 3 and the electrically conductive member can be arranged at the same end or can be arranged at two ends respectively. The processing cartridge 100 is further provided with a handle 13 facilitating taking, and the handle 13 can be arranged on the photosensitive unit 1 or the developing unit 2.

[0030] The developing unit 2 comprises a first cover member 23 and a second cover member 24 arranged at longitudinal ends of the developing shell 21, further, the first cover member 23 and the second cover member 24 are arranged opposite to each other in the left-right direction and are used for supporting a rotating member such as the developing member 12, at the same time, the first cover member 23 and the second cover member 24 are further used for rotatably combining with the photosensitive unit 1 to realize the approaching / contacting or the moving away of the developing member 12 and the photosensitive member 22.

[0031] Further, the processing cartridge 100 comprises a developing agent adjusting assembly 4 arranged in the developing unit 2, and a part of the developing agent adjusting assembly 4 is used for contacting the developing member 22 to make the developing agent on the surface of the developing member 22 uniformly distributed.

[0032] Embodiment One

[0033] Figure 3 is a partial exploded view of the developing unit involved in the embodiment one of the present application; Figure 4 is a perspective view of a pressing member in the developing agent adjusting assembly involved in the embodiment one of the present application; Figure 5A and Figure 5B is a perspective view of the developing shell involved in the embodiment one of the present application.

[0034] As Figure 3As shown, the developer regulating assembly 4 is arranged in the developing housing 21, adjacent to the developing member 22 in the front-rear direction, and a part of the developer regulating assembly 4 is in contact with the developing member 22. Further, the developer regulating assembly 4 comprises a regulating member 41 and a pressing member 42, which can be combined with each other, and the regulating member 41 has a sheet structure extending in the left-right direction and the front-rear direction. Specifically, the regulating member 41 has a first end 41a, a second end 41b, a third end 41c and a fourth end 41d, the first end 41a and the second end 41b are opposite to each other in the front-rear direction, and the third end 41c and the fourth end 41d are opposite to each other in the left-right direction. In the front-rear direction, the first end 41a is closer to the developing member 22 than the second end 41b. Further, the part close to the first end 41a is used to contact the developing member 22, so as to uniformly distribute the developer carried on the surface of the developing member 22.

[0035] Further, the regulating member 41 also has an upper surface 410 facing upward and a lower surface 411 facing downward, the upper surface 410 is used to contact the pressing member 42, and the lower surface 411 is used to contact the developing housing 21. The upper surface 410 and the lower surface 411 are planes, and the plane contact exists between the regulating member 41 and the pressing member 42, and between the regulating member 41 and the developing housing 21. The plane is parallel / non-parallel to the rotation axis X22 of the developing member 22, and preferably, the plane is parallel to the rotation axis X22 of the developing member 22, so that the fitting degree between the regulating member 41 and the pressing member 42, and between the regulating member 41 and the developing housing 21 is higher, thereby preventing the gap between the regulating member 41 and the pressing member 42, or between the regulating member 41 and the developing housing 21 from causing the developer to leak out, so as to improve the sealing performance of the process cartridge 100.

[0036] Further, the adjusting member 41 is provided with one or more first positioning portions 412 and one or more first mounting portions 413, the first positioning portions 412 are used for positioning the adjusting member 41 relative to the developing housing 21, the first mounting portions 413 are used for mounting the adjusting member 41, further, at least one of the first positioning portions 412 and the first mounting portions 413 can be provided as a column extending in the up-down direction or a hole extending in the up-down direction, the hole can be a blind hole or a through hole, in the embodiment, preferably, the first positioning portions 412 and the first mounting portions 413 are provided as through holes extending in the up-down direction, preferably, the number of the first positioning portions 412 is five, the number of the first mounting portions 413 is four, the first positioning portions 412 and the first mounting portions 413 are distributed at intervals, wherein, in the left-right direction, the intervals of the first positioning portions 412 are the same, one of the first positioning portions 412 is arranged in the middle, two of the first mounting portions 413 are arranged on the left and right sides of the adjusting member 41, and the other two are arranged close to the middle, relative to the first positioning portion 412 in the middle in the left-right direction, the four first mounting portions 413 are left-right symmetrical, for example, taking the position of the first positioning portion 412 in the middle and the two first mounting portions 413 on the left side of the first positioning portion 412 as an example, as shown in Figure 3 FIG. 6, the distance from the leftmost first mounting portion 413 to the other first mounting portion 413 is S1, the distance from the other first mounting portion 413 to the first positioning portion 412 in the middle is S2, S1 is greater than S2.

[0037] As shown in Figure 4As shown, the pressing member 42 is used to abut with the adjusting member 41 in the up-down direction, a part of the pressing member 42 is used to combine with the developing housing 21, further, the pressing member 42 is in a sheet structure, extending in the left-right direction and the front-back direction, the pressing member 42 has a first surface 421 facing upward and a second surface 422 facing downward, the second surface 422 is used to contact with the upper surface 410 of the adjusting member 41, the pressing member 42 further has one or more first combining parts 423 and one or more second combining parts 424, the first combining parts 423 can be used to cooperate with the first positioning parts 412, the second combining parts 424 can be used to cooperate with the first mounting parts 413, further, at least one of the first combining parts 423 and the second combining parts 424 can be provided as a column extending in the up-down direction or a hole extending in the up-down direction, the hole can be a blind hole or a through hole, in the embodiment, preferably, the first combining parts 423 and the second combining parts 424 are provided as columns extending downward from the second surface 422 of the pressing member 42, the first combining parts 423 and the second combining parts 424 are used to combine with the developing housing 21 after passing through the first positioning parts 412 and the first mounting parts 413 of the adjusting member 41 respectively, further, the first combining parts 423 are used to position the adjusting member 41 and the pressing member 42, the second combining parts 424 are used to mount and fix the adjusting member 41 and the pressing member 42, preferably, the number of the first combining parts 423 and the second combining parts 424 respectively corresponds to the number of the first positioning parts 412 and the first mounting parts 413. The first surface 421 and the second surface 422 are planes, the pressing member 42 and the adjusting member 41 are in plane contact, the plane is parallel / non-parallel to the rotation axis X22 of the developing member 22, preferably, the plane is parallel to the rotation axis X22 of the developing member 22, in this way, the pressing member 42 and the adjusting member 41 have a higher degree of fit, which can prevent the powder leakage. Further, the pressing member 42 can be made of non-metallic material, which can reduce the cost.

[0038] Further, the developer adjusting assembly 4 is further provided with a clamping part, the clamping part is used to mount the pressing member 42 and the adjusting member 41, in the embodiment, the clamping part is provided as one or more buckles 4241 arranged on each second combining part 424, the buckle 4241 is used to be clamped with the developing housing 21, when a plurality of buckles 4241 are arranged, for example, two buckles 4241 are arranged, the buckles 4241 are symmetrical in the left-right direction / front-back direction, in this way, the buckles 4241 can be combined with the developing housing 21 more stably.

[0039] As Figure 5A and Figure 5BAs shown, the developing housing 21 has a powder bin 211 for accommodating the developer and a developing bin 212 for accommodating the developing member 22, a powder outlet window 213 is arranged between the powder bin 211 and the developing bin 212, the developer in the powder bin 211 is attached to the surface of the developing member 22 through the powder outlet window 213, further, sealing members 2121 are arranged on the left and right sides of the developing bin 212, the sealing members 2121 are used to prevent the developer from leaking out from the left and right ends of the developing member 22, so as to improve the sealing performance. The developing unit 2 comprises a combination member 214 arranged on the developing housing 21, the combination member 214 extends in the left-right direction and the front-rear direction, in the front-rear direction, the combination member 214 is located behind the powder outlet window 213, so as to be used for mounting the developer adjusting assembly 4, preferably, the combination member 214 is integrally formed with the developing housing 21, so that the developer cannot leak out from the gap between the combination member 214 and the developing housing 21, so as to ensure the sealing performance.

[0040] Further, the combination member 214 is used for contacting the adjusting member 41, and the combination member 214 is also combined with a part of the pressing member 42, the combination member 214 has a third face 2141 facing upward and a fourth face 2142 facing downward, wherein the third face 2141 extends in the left-right direction and the front-rear direction, the third face 2141 is preferably a plane, the combination member 214 is in plane contact with the adjusting member 41, and the plane is parallel / perpendicular to the rotation axis X22 of the developing member 22, preferably, the plane is parallel to the rotation axis X22 of the developing member 22, the third face 2141 is used for contacting and closely abutting the lower surface 411 of the adjusting member 41, so as to prevent the gap between the adjusting member 41 and the combination member 214 from leaking powder.

[0041] Further, the combination member 214 further comprises one or more second positioning portions 2143 and one or more second mounting portions 2144, wherein the second positioning portions 2143 are used for positioning the adjusting member 41 and the pressing member 42, and the second mounting portions 2144 are used for mounting and fixing the adjusting member 41 and the pressing member 42, further, at least one of the second positioning portions 2143 and the second mounting portions 2144 can be arranged as a protrusion extending in the up-down direction or a hole extending in the up-down direction, the hole can be a blind hole or a through hole, in the embodiment, preferably, the second positioning portions 2143 and the second mounting portions 2144 are arranged as holes penetrating through in the up-down direction, further, the second positioning portions 2143 are used for combining with the first combining portions 423 of the pressing member 42, and the second mounting portions 2144 are used for combining with the second combining portions 424 of the pressing member 42, preferably, the number of the second positioning portions 2143 and the second mounting portions 2144 respectively corresponds to the number of the first combining portions 423 and the second combining portions 424.

[0042] Further, the combining piece 214 further comprises a combined part 2145 arranged on the fourth surface 2142, the combined part 2145 is used to combine with the pressing piece 42, in particular, the combined part 2145 is used to combine with the second combined part 424 of the pressing piece 42, further, the combined part 2145 has a combined surface 21451, the buckle 4241 of the second combined part 424 is used to be clamped with the combined surface 21451, so that the adjusting piece 41 and the pressing piece 42 are fixedly installed.

[0043] When the adjusting piece 41, the pressing piece 42 and the combining piece 214 are arranged in the preferred structure, the developer adjusting assembly 4 is installed, first, the first positioning part 412 and the first mounting part 413 of the adjusting piece 41 are respectively aligned with the second positioning part 2143 and the second mounting part 2144 of the combining piece 214, then the first combined part 423 of the pressing piece 42 passes through the first positioning part 2143 and the second mounting part 2144 in sequence, so that the adjusting piece 41 and the pressing piece 42 are positioned, the second combined part 424 of the pressing piece 42 passes through the first mounting part 413 and the second mounting part 2144 in sequence, so that the buckle 4241 is clamped with the combined part 2145 of the developing housing 21, so that the adjusting piece 41 and the pressing piece 42 are fixedly installed. Alternatively, when the developer adjusting assembly 4 is installed, the adjusting piece 41 and the pressing piece 42 can be combined and then installed on the combining piece 214.

[0044] In other embodiments, the clamping part is arranged on the combining piece 214, in particular, the second mounting part 2144 is arranged as a protrusion extending upward from the third surface 2141, the clamping part is arranged as a buckle arranged at the end of the protrusion, at this time, the second combined part 424 of the pressing piece 42 is arranged as a hole penetrating in the up-down direction, the combined part can not be arranged, the buckle is clamped with the pressing piece 42 by thickening the thickness between the third surface 2141 and the fourth surface 2142, the combined part can also be arranged on the opposite sides of the second combined part 424 in the form of a hole, that is, when the developer adjusting assembly 4 is installed, the buckle on the combining piece 214 is directly or indirectly clamped with the first surface 421 of the pressing piece 42, so as to complete the installation.

[0045]

Embodiment Two

[0046] Figure 6 is a partial exploded view of the developing unit involved in the embodiment two of the application; Figure 7 is a perspective view of the pressing piece in the developer adjusting assembly involved in the embodiment two of the application.

[0047] The difference between this embodiment and the embodiment one is that the first combined part for positioning is arranged on the developing housing, in particular as follows.

[0048] As Figure 6 and Figure 7As shown, in the embodiment, the structure of the adjusting member 41 is the same as that in the first embodiment, and thus will not be described again. The difference is that, in the first embodiment, the second positioning portion 2143 is provided as a hole penetrating in the up-down direction, while in the present embodiment, the second positioning portion 2143 is provided as a protrusion 2143 extending upward from the third face 2141, and the protrusion 2143 is used to guide the positioning of the adjusting member 41 and the pressing member 42.

[0049] Further, the pressing member 42 comprises a first portion 42a extending in the left-right direction and the front-back direction, and a second portion 42b extending in the left-right direction and the up-down direction, the first portion 42a and the second portion 42b are integrally formed or separately formed, the first portion 42a has a first face 421 facing upward and a second face 422 facing downward, optionally, the second portion 42b can be considered as extending upward from the end of the first face 421, further, the pressing member 42 is further provided with one or more ribs 425, the ribs 425 are respectively connected with the first portion 42a and the second portion 42b, which can strengthen the strength of the pressing member 42 to prevent the pressing member 42 from being deformed or broken, further, the ribs 425 can extend from the first portion 42a or the second portion 42b; and different from the first embodiment, the first combining portion 423 is provided as a hole penetrating in the up-down direction, the first combining portion 423 penetrates the first portion 42a in the up-down direction, and is used to make the protrusion 2143 provided in the developing housing 21 pass through, so that the pressing member 42 is positioned.

[0050] The beneficial effects obtained through the above embodiments are as follows:

[0051] 1. The adjusting member 41 is made of non-metal flexible material, such as polyurethane, rubber, etc., the adjusting member 41 is clamped by the pressing member 42 and the developing housing 21, and after being pressed by the pressing member 42, the upper surface 410 and the lower surface 411 of the adjusting member 41 are simultaneously extruded to simultaneously elastically deform in the up-down direction, so that the adjusting member 41 is clamped more tightly, and the stability of the adjusting member 41 is improved.

[0052] 2. As described in the background, in the prior art, a sponge is provided between the adjusting member and the developing housing, and the sponge is pasted on the developing housing by an adhesive such as double-sided tape, and only the upper surface of the sponge is extruded and deformed by the bracket, and if the pasting surface is delaminated, powder leakage will occur, which cannot guarantee the sealing of the developing unit, and thus brings bad experience to the user; in the present scheme, the adjusting member 41 is clamped in the up-down direction, and no gap is generated between the adjusting member 41 and the developing housing 21 and between the adjusting member 41 and the pressing member 42 to cause powder leakage, and the sealing of the developing unit 2 is improved.

[0053] 3. The upper surface 410 and the lower surface 411 of the adjusting member 41, the first surface 421 and the second surface 422 of the pressing member 42, and the third surface 2141 of the combining member 214 are all flat surfaces, the pressing member 42, the adjusting member 41 and the combining member 214 are in flat surface contact in sequence, the pressing member 42 and the combining member 214 clamp and press the adjusting member 41, and the adjusting member 41 will not be wavy deformed.

[0054] 4. In the prior art, the screwing method cannot control the depth of the screwing, especially in the manual assembly production. In the present application, the pressing member 42 is provided with a plurality of second combining portions 424, and the size of each of the plurality of second combining portions 424 and the combined portion 2145 combined with the second combining portion 424 in the up-down direction is the same and controllable, so that the pressure on the adjusting member 41 is uniform and controllable.

[0055] 5. In the above-mentioned embodiment one and embodiment two, the number of the second combining portions 424 is four, and two of them are arranged on the left and right sides of the pressing member 42, and the other two are arranged near the middle of the pressing member 42 in the left-right direction, corresponding to the positions of the first mounting portions 413, so that the pressure on the adjusting member 41 is more uniform.

Claims

1. A developer regulating assembly for installation in a developing unit having a developing housing and a developing member rotatably disposed in the developing housing, a portion of the developer regulating assembly being for contact with the developing member, characterized in that, the developer regulating assembly comprises a regulating member and a pressing member, the regulating member being clamped by the pressing member and the developing housing, a portion of the pressing member being for engagement with the developing housing, the pressing member and the regulating member, the regulating member and the developing housing being in planar contact; the regulating member is made of a non-metallic flexible material; the regulating member is in a sheet structure extending in a left-right direction and a front-rear direction, the regulating member is provided with a first positioning portion and a first mounting portion, the first positioning portion being for positioning the regulating member, the first mounting portion being for mounting and fixing the regulating member; the first positioning portion and the first mounting portion are provided as holes extending in an up-down direction, the first positioning portion and the first mounting portion are provided as a plurality, the first positioning portion and the first mounting portion are spaced apart in the left-right direction; the pressing member has a first engagement portion and a second engagement portion, the first positioning portion being for cooperation with the first engagement portion to position the pressing member and the regulating member, the first mounting portion being for cooperation with the second engagement portion to mount and fix the pressing member and the regulating member, the first engagement portion and the second engagement portion are each provided as a plurality; the second engagement portion is provided as four corresponding to the first mounting portion, two of the second engagement portions are provided on left and right sides of the pressing member, the other two of the second engagement portions are provided at positions close to the middle of the pressing member in the left-right direction corresponding to the positions of the first mounting portion; the pressing member is in a sheet structure extending in the left-right direction and the front-rear direction, the first engagement portion and the second engagement portion are provided as columns extending in the up-down direction; the developer regulating assembly is further provided with a clamping portion, the clamping portion is provided as one or more buckles provided on each of the second engagement portions, the buckles being for clamping with the developing housing.

2. The developer conditioning assembly of claim 1, wherein, the regulating member has an upper surface facing upward and a lower surface facing downward, the pressing member has a second surface facing downward, the upper surface being for contact with the second surface, the lower surface being for contact with the developing housing, the upper surface, the lower surface and the second surface are all planar.

3. The developer conditioning assembly of claim 2, wherein, the planar surfaces are parallel to an axis of rotation of the developing member.

4. The developer conditioning assembly of claim 2, wherein, the pressing member comprises a first portion extending in the left-right direction and the front-rear direction and a second portion extending in the left-right direction and the up-down direction, the first portion and the second portion being integrally formed or separately formed, the pressing member further has a first surface facing upward, the first surface and the second surface being provided on the first portion, the second portion extending upward from the first surface.

5. A process cartridge comprising a developing housing and a developing member rotatably disposed in the developing housing, characterized in that, the process cartridge further comprises the developer regulating assembly according to any one of claims 1-4, a portion of the developer regulating assembly being for contact with the developing member.

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