Developing box

Abstract

A developing cartridge for being detachably mounted to an image forming apparatus includes: a cartridge body for accommodating a developer, the cartridge body having a first end and a second end in a first direction; the developing roller is rotatably arranged on the box body around an axis extending along a first direction; the developing roller comprises a roller shaft and a roller main body rotating along with the roller shaft; the storage medium comprises an electric contact surface arranged at the first end; the electrode is arranged at the second end and is electrically connected with the roller main body; and a powder feeding member for feeding the developer to the roller body, the powder feeding member not rotating around an axis extending in the first direction or not electrically connected to the roller body. According to the developing box, the powder feeding piece does not rotate around the axis extending in the first direction, or the powder feeding piece is not electrically connected with the roller main body, so that the arrangement of the powder feeding piece is simpler, and the production cost of the developing box is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic imaging technical field, concretely is a developing box. BACKGROUND

[0002] The developing box and a drum assembly are detachably installed in an image forming device to provide developer for the image forming device, so that a sheet such as paper output from the image forming device can be imaged. The developing box includes a box body, a developing roller, a powder feeding roller, and an electrode. The developing roller and the powder feeding roller are disposed in the box body and extend along a first direction. The powder feeding roller receives power from the electrode to charge the developer on the surface of the powder feeding roller. The powder feeding roller is in contact with the developing roller to transfer the developer to the developing roller. The developing roller is rotatably supported at both ends in the first direction by the box body at both ends in the first direction. The powder feeding roller is rotatably supported at both ends in the first direction by the box body at both ends in the first direction. The powder feeding roller receives a rotational driving force from the image forming device to rotate around a rotational axis in the first direction. A bearing sleeve or other structure is also provided at the position where the powder feeding roller and the box body are rotationally coupled, which results in a complex setting mode for providing the developer for the developing roller and high cost. SUMMARY

[0003] According to an aspect of the utility model, a developing box is provided for detachable installation in an image forming device, including:

[0004] a box body for accommodating developer, which has a first end and a second end in a first direction;

[0005] a developing roller rotatably disposed on the box body around an axis extending in the first direction; the developing roller includes a roller shaft and a roller body rotating with the roller shaft;

[0006] a storage medium including an electrical contact surface provided at the first end;

[0007] an electrode provided at the second end and electrically connected to the roller body; and

[0008] a powder feeding member for feeding developer to the roller body, the powder feeding member not rotating around an axis extending in the first direction or the powder feeding member not being electrically connected to the roller body.

[0009] The powder feeding member of the utility model does not rotate around an axis extending in the first direction, or the powder feeding member is not electrically connected to the roller body, so that the powder feeding member is simpler to set, and the production cost of the developing box is reduced.

[0010] In some embodiments, the powder feeding member does not rotate around an axis extending in the first direction, and the powder feeding member is fixedly provided on the box body.

[0011] In some embodiments, the powder feeding member is arranged in contact with the roller body to deliver the developer to the roller body by friction.

[0012] In some embodiments, the cartridge includes a partition that separates a space in the cartridge into a carbon powder tank and a developing tank in communication, and the developing roller is arranged in the developing tank.

[0013] The partition includes a first wall formed in the developing tank and a second wall formed in the carbon powder tank, and the powder feeding member is fixedly arranged on the first wall.

[0014] In some embodiments, an included angle between the first wall and the second wall is 40°-120°.

[0015] In some embodiments, the powder feeding member is made of a soft material.

[0016] In some embodiments, the powder feeding member is made of sponge or rubber.

[0017] In some embodiments, the powder feeding member is not in contact with the roller body.

[0018] In some embodiments, the powder feeding member is made of a hard material, and the powder feeding member is provided with a plurality of through holes through which the developer can be delivered to the roller body.

[0019] In some embodiments, the powder feeding member is made of metal or resin.

[0020] In some embodiments, the powder feeding member does not rotate around an axis extending in a first direction, and the powder feeding member includes a rotating member that rotates around an axis intersecting the first direction, and a circumferential surface of the rotating member is in contact with the roller body to deliver the developer thereto.

[0021] In some embodiments, the rotating member is provided in a plurality, arranged in the first direction, and axes of rotation of the plurality of rotating members are parallel, and adjacent rotating members are in contact with each other.

[0022] The developing cartridge further includes a power receiving portion and a plurality of bevel gears in driving connection with the power receiving portion, the plurality of rotating members are connected by a chain or a belt, and the power receiving portion transmits driving force to the rotating members through the plurality of bevel gears to drive the plurality of rotating members to rotate together.

[0023] In some embodiments, the powder feeding member is made of an electrically conductive material.

[0024] In some embodiments, the powder feeding member is not electrically connected with the roller body, the powder feeding member rotates around an axis extending in a first direction, and is in contact with the roller body.

[0025] In some embodiments, the roller shaft does not receive electrical power.

[0026] In some embodiments, the developer cartridge includes a powder exit blade for regulating the thickness of the layer of developer on the roller body, the electrode being electrically connected to the roller body by the powder exit blade. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic diagram of the developer cartridge in Embodiment One of the present application;

[0028] Figure 2 is a structural schematic diagram of the developer cartridge from another perspective in Embodiment One of the present application;

[0029] Figure 3 is an exploded view of the developer cartridge in Embodiment One of the present application;

[0030] Figure 4 is a structural schematic diagram of the developer assembly in contact with the electrode in Embodiment One of the present application;

[0031] Figure 5 is a structural schematic diagram of the developer assembly in contact with the electrode in Embodiment Two of the present application;

[0032] Figure 6 is a structural schematic diagram of the powder feeding member in contact with the developing roller in Embodiment Three of the present application;

[0033] Figure 7 is a structural schematic diagram of the powder feeding member in contact with the developing roller in the modified example of Embodiment Three of the present application;

[0034] Figure 8 is a three-dimensional schematic diagram of the first end of the drum assembly in Embodiment Four of the present application;

[0035] Figure 9 is a three-dimensional schematic diagram of the second end of the drum assembly in Embodiment Four of the present application;

[0036] Figure 10 is a three-dimensional schematic diagram of the developer cartridge from a first perspective in Embodiment Four of the present application;

[0037] Figure 11 is a three-dimensional schematic diagram of the developer cartridge from another perspective in Embodiment Four of the present application

[0038] Figure 12 is an exploded schematic diagram of the developer cartridge from a first perspective in Embodiment Four of the present application;

[0039] Figure 13 is a three-dimensional structural schematic diagram of the powder feeding member in Embodiment Four of the present application;

[0040] Figure 14 is the first end of the powder feeding piece and the box body of the embodiment four of the utility model cooperates the three-dimensional schematic view;

[0041] Figure 15 is the second end of the developing box of the embodiment four of the utility model explodes the schematic view;

[0042] Figure 16 is the second end of the developing box of the embodiment four of the utility model hides the second cover three-dimensional schematic view;

[0043] Figure 17 is the first end of the photosensitive drum and the developing roller cooperation of the embodiment four of the utility model schematic view;

[0044] Figure 18 is the second end of the photosensitive drum and the developing roller cooperation of the embodiment four of the utility model schematic view;

[0045] Figure 19 is the structure schematic view of the developing box provided by the embodiment five of the utility model;

[0046] Figure 20 is the partial explosion structure schematic view of the developing box provided by the embodiment five of the utility model from front to back;

[0047] Figure 21 is the structure schematic view of the second end of the developing box provided by the embodiment five of the utility model;

[0048] Figure 22 is the cross section structure schematic view of the developing box provided by the embodiment five of the utility model and is provided with powder feeding piece;

[0049] Figure 23 is the cross section structure schematic view of the developing box provided by the embodiment five of the utility model and is provided with moving piece;

[0050] Figure 24 is the cross section structure schematic view of the developing box provided by the embodiment six of the utility model. DETAILED DESCRIPTION

[0051] The utility model will be further explained in detail below in conjunction with the drawings, obviously, the described embodiment is the part embodiment of the utility model, rather than all the embodiment.Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0052] It should be noted that the terms "first", "second" and the like in the description and in the claims are used for descriptive purposes only and do not necessarily connote an ordering of importance, sequence, or spatial arrangement. Thus, a feature described as "first" can imply that the feature is either the first of a plurality of features or that the feature is the first of a plurality of features to be described or that the feature is the first of a plurality of features to be implemented. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

[0053] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "fixed" and the like should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0055] In the above description, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0056] Embodiment one:

[0057] As Figure 1 , Figure 2As shown, the developing cartridge 1 is detachably mounted on the drum assembly of the image forming apparatus. The drum assembly is provided with a photosensitive drum. The image forming apparatus is provided with a detection element for detecting the developing cartridge 1. When the detection element is triggered by the developing cartridge 1, it moves, so that the image forming apparatus can identify the developing cartridge 1.

[0058] The developing cartridge 1 includes a cartridge body 10, a transmission assembly, a first protective cover 111, and an electrode 123.

[0059] like Figure 1 and Figure 2 As shown, the cartridge body 10 has a first end 11 and a second end 12 oppositely arranged in a first direction; a third end 13 and a fourth end 14 oppositely arranged in a second direction; and a fifth end 15 and a sixth end 16 oppositely arranged in a third direction. A handle 141 is provided at the fourth end 14 of the cartridge body 10, allowing the user to pick up the developing cartridge 1 by gripping the handle 141. A first cover 111 is detachably fixedly installed at the first end 11 of the cartridge body 10, and the first cover 111 at least covers the transmission assembly portion, serving to protect the transmission assembly. A second cover 121 is detachably installed at the second end 12 of the cartridge body 10.

[0060] The first end of the developing cartridge 1 has a first cover 111, which includes a first guide 1111 and a first pusher 1112. The first guide 1111 is a cylindrical protrusion protruding outward in a first direction. The first guide 1111 is used to guide the developing cartridge 1 to be smoothly installed onto the drum assembly during the installation process. In the first direction, the first guide 1111 is closer to the third end 13 than the fourth end 14. The first pusher 1112 is located at the rear end of the first cover 111. The first pusher 1112 protrudes in a direction away from the developing roller 131. The first pusher 1112 can be a U-shaped, C-shaped, or V-shaped protrusion. The first pusher 1112 is used to receive the pushing force applied by the drum assembly to the developing cartridge 1, so that the developing roller 131 is in close contact with the photosensitive drum.

[0061] The second cover 121 includes a second pushing part 1212. The second pushing part 1212 is located at the rear end of the second cover 121 and protrudes in the direction away from the developing roller 131. The second pushing part 1212 can be a U-shaped, C-shaped, or V-shaped protrusion. The first pushing part 1212 is used to receive the pushing force applied by the drum assembly to the developing cartridge 1, so that the developing roller 131 is in close contact with the photosensitive drum. In the first direction, the first pushing part 1212 and the second pushing part 1212 are symmetrically arranged.

[0062] The second end 12 further comprises a second bearing 122, and the second bearing 122 has a second guide 1221, which is symmetrically arranged with the first guide 1111 in the first direction. The second guide 1221 is a cylindrical protrusion protruding outward in the first direction, and the second guide 1221 is used to guide the developing cartridge 1 to be smoothly mounted on the drum assembly during the process of mounting the developing cartridge 1 on the drum assembly.

[0063] The developing cartridge 1 comprises a bracket 17 and a storage medium 18, which is detachably mounted on the bracket 17, and the bracket 17 is provided with buckles, and the bracket 17 is detachably mounted on the first cover 111 or the cartridge body 10 through the buckles. The storage medium 18 is used to store the related information of the developing cartridge 1, and has an electrical contact surface 181, and the related information of the developing cartridge 1 is transmitted to the image forming device through the electrical contact surface 181. Specifically, the electrical contact surface 181 in electrical connection with the storage medium 18 directly contacts the image forming device to transmit the information in the storage medium 17 to the image forming device.

[0064] Figure 3 、 Figure 4 As shown in the figure, the developing cartridge 1 is provided with a developing roller 131 and a powder feeding member 133, both of which extend in the first direction, and both of which are supported by the cartridge body 10 and can rotate relative to the cartridge body 10, and the rotation axes of both of which extend in the first direction. In this embodiment, the powder feeding member 133 is specifically implemented as a powder feeding roller, the powder feeding member 133 delivers the developer to the developing roller 131, and the powder feeding member 133 and the developing roller 131 are not electrically connected, and the main body of the powder feeding member 133 can be made of insulating material. The developing roller 131 contacts the photosensitive drum 24, and the developing roller 131 delivers the developer to the photosensitive drum 24.

[0065] The developing roller 131 comprises a roller main body 1311 and a roller shaft 1312, the roller main body 1311 covers at least part of the roller shaft 1312, the roller main body 1311 rotates with the roller shaft 1312, the roller main body 1311 is preferably supported by conductive rubber material, and the roller shaft 1312 is preferably a steel shaft to ensure the strength of the roller shaft 1312, and in other embodiments, it can also be a plastic shaft or other shaft, the roller main body 1311 and the roller shaft 1312 are not electrically connected, and an insulating layer can be arranged between the two to insulate them, or a shaft made of insulating material is directly used. The roller main body 1311 is used to adsorb the developer and deliver the developer to the photosensitive drum 24.

[0066] The developing box 1 further comprises a powder outlet blade 132 for contacting the developing roller 131 and controlling the thickness of the developer layer on the developing roller 131. The powder outlet blade 132 comprises a blade holder 1321 and a blade 1322, the blade holder 1321 supports the blade 1322, and the blade 1322 is installed on the blade holder 1321 by welding or sticking, etc., and the welding is preferred in the embodiment. The blade holder 1321 extends in the first direction and is bent in the third direction, and the blade holder 1321 is provided with a first mounting hole 13211, which is a through hole of the blade holder 1321 in the second direction, and preferably two first mounting holes 13211 are provided, which are respectively located at one end and the other end of the blade holder 1321 close to the second end 12 in the first direction. The blade 1322 contacts the roller main body 1311 of the developing roller 131, and the blade 1322 can limit the thickness of the developer layer on the roller main body 1311 to ensure that the developing roller 131 uniformly transfers the developer. The powder outlet blade 132 is at least partially made of conductive material, and in the embodiment, the powder outlet blade 132 is made of conductive material, and is preferably a steel blade, which has good conductivity and high cost performance.

[0067] The developing roller 131, the powder feeding member and the powder outlet blade 132 are the developing assembly in the embodiment.

[0068] As shown in Figure 4 The second end 12 of the box body 10 is further provided with an electrode 123 supported by the second bearing 122, and the electrode 123 is used to contact the power supply terminal in the image forming device to receive the electric energy output by the image forming device. After receiving the electric energy output by the image forming device, the electrode 123 transmits the electric energy to the developing roller 131, so that the developing roller 131 is charged to adsorb the developer.

[0069] The second bearing 122 is used to support the developing roller 131, the powder feeding member 133 and the electrode 123. The second bearing 122 is further provided with a support hole 1222, which is a through hole in the first direction, and the first electric contact part 1231 is supported by the support hole 1222, and the first electric contact part 1231 is exposed outside through the support hole 1222 to contact the power supply terminal on the image forming device.

[0070] The electrode 123 comprises a first electrical contact 1231, a second electrical contact 1232, and a connecting portion 1233 connecting the first electrical contact 1231 and the second electrical contact 1232, the connecting portion 1233 is bent and at least partially overlaps the second end 12 of the cartridge 10, the connecting portion 1233 is supported by the second end 12 to ensure stable installation of the electrode 123. The first electrical contact 1231 is used to directly contact a power supply terminal in the image forming device to receive electric energy, and the second electrical contact 1232 is used to contact the powder outlet blade 132 to transmit electric energy to the powder outlet blade 132, and the powder outlet blade 132 transmits electric energy to the roller body 1311 of the developing roller 131, and the roller body 1311 is charged to adsorb the developer. Since the roller body 1311 is not electrically connected to the roller shaft 1312, the roller shaft 1312 does not receive electric energy. In some embodiments, the roller shaft 1312 can receive electric energy.

[0071] The second electrical contact 1232 is provided with a second mounting hole 12321, which is a through hole in the second direction, and one of the first mounting holes 13211 of the blade holder 1321 is aligned with the second mounting hole 12321, and preferably the first mounting hole 13211 of the blade holder 1321 disposed close to the second end 12 in the first direction is aligned with the second mounting hole 12321. The cartridge 10 is provided with a third mounting hole 101, which is aligned with the first mounting hole 13211 and the second mounting hole 12321, and when the powder outlet blade 132 and the electrode 123 are installed on the cartridge 10, the third mounting hole 101 is aligned with the first mounting hole 13211 and the second mounting hole 12321, and a fastener such as a screw is simultaneously passed through the three to enable the powder outlet blade 132 and the electrode 123 to be stably installed on the cartridge 10 while the powder outlet blade 132 and the electrode 123 can stably contact each other to ensure stable transmission of electric energy.

[0072] That is, in this embodiment, the electrode 123 is not electrically connected to the powder feeding member 133, and the powder outlet blade 132 serves as an intermediate member, and the electrode 123 is electrically connected to the roller body 1311 of the developing roller 131 through the powder outlet blade 132 to transmit electric energy, and in some embodiments, another intermediate member can be provided to transmit electric energy, or the electrode 123 can directly contact the roller body 1311.

[0073] In this embodiment, the electrode 123 is preferably an iron sheet, and in other embodiments, it can be other conductive materials such as conductive resin.

[0074] Embodiment Two

[0075] Except for special descriptions, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment One, and the difference between this embodiment and Embodiment One is that the structure of the developing assembly is different.

[0076] As Figure 5As shown, the developing assembly in the embodiment includes a developing roller 131, a powder outlet blade 132, and a powder feeding member 133. The developing roller 131 and the powder outlet blade 132 are the same as in Embodiment One, and thus will not be described again. In the embodiment, the electrode 123 includes a first contact portion 1231, a second contact portion 1232, a connecting portion 1233, and a third contact portion 1234. The connecting portion 1233 is in contact with the cartridge body 10 so that the electrode 123 is supported by the cartridge body 10 or by the second cover 121. The first contact portion 1231 directly or indirectly receives electric energy output by the image forming apparatus. The second contact portion 1232 is in contact with the powder outlet blade 132 to transmit electric energy. The powder outlet blade 132 is in contact with the roller main body 1311 of the developing roller 131 so that the electrode 123 is electrically connected to the roller main body 1311.

[0077] In the embodiment, the powder feeding member 133 is specifically implemented as a friction member. The powder feeding member 133 is fixedly arranged inside the cartridge body 10. The powder feeding member 133 extends in the first direction. The powder feeding member 133 is in contact with the roller main body 1311 of the developing roller 131. In the embodiment, the powder feeding member 133 is preferably a sponge. When the developing roller 131 rotates, the roller main body 1311 is in frictional contact with the powder feeding member 133. The powder feeding member 133 transmits the developer to the developing roller 131.

[0078] The cartridge body 10 further includes a conductive member 138. The conductive member 138 is preferably a steel sheet. The conductive member 138 is in contact with the powder feeding member 133 and is preferably located between the bottom of the cartridge body 10 and the powder feeding member 133, i.e., the powder feeding member 133 presses the conductive member 138. The conductive member 138 is provided with an electric receiving end 1381 near the second end 12. The electric receiving end 1381 is in contact with the third contact portion 1234 to receive electric energy transmitted by the electrode 123.

[0079] In the embodiment, the powder feeding member 133 is made of a conductive material, preferably a conductive sponge. The powder feeding member 133 is in contact with the conductive member 138 to receive electric energy and become charged. The charged powder feeding member 133 can better adsorb the developer, so that the powder feeding member 133 better transmits the developer to the developing roller 131.

[0080] In some embodiments, the electrode 123 can also be in direct contact with the powder feeding member 133 to transmit electric energy.

[0081] In other embodiments, the conductive member 138 can not be provided. The powder feeding member 133 is in contact with the roller main body 1311 to receive electric energy transmitted by the roller main body 1311 and become charged.

[0082] In other embodiments, the conductive member 138 can not be provided. The powder feeding member 133 is made of an insulating material. The powder feeding member 133 cannot receive electric energy output by the image forming apparatus. The powder feeding member 133 only rubs against the roller main body 1311 to transmit the developer.

[0083] Embodiment Three:

[0084] Except for special description, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment One. The difference between this embodiment and Embodiment One is that the structure of the powder feeding member is different.

[0085] As shown in Figure 6 The transmission assembly is arranged at the first end 11 of the cartridge body 10. The transmission assembly includes a driving part rotatably mounted on the first end 11 of the cartridge body 10, and the rotation axis of the driving part is parallel to the first direction. The driving part includes a driving gear 43 coaxially and integrally formed with a power receiving part 40. The driving gear 43 is closer to the first end 11 of the cartridge body 10 than the power receiving part 40 in the first direction. The power receiving part 40 is used to receive power output by the image forming device and transmit the power to the gear on the transmission assembly.

[0086] In this embodiment, the powder feeding member is specifically a rotating part 135. There are multiple rotating parts 135, which are arranged along the first direction, have parallel rotation axes, and are perpendicular to the first direction. Preferably, the rotation axes of the rotating parts 135 are parallel to the third direction, i.e., the rotation axes of the rotating parts 135 are perpendicular to the first direction and the second direction. The rotating part 135 is rotatably supported by a support shaft 136. The circumferential surface of the rotating part 135 is in contact with the roller main body 1311 of the developing roller 131 to transmit the developer to the developing roller 131. The rotating part 135 can rotate by receiving driving force from the power receiving part 40, or can not receive driving force from the power receiving part 40. When the rotating part 135 does not receive driving force, it can be in a static state, or can be slightly rotated under the rotation of the developing roller.

[0087] As shown in Figure 6As shown, the rotating member 135 receives the driving force from the power receiving unit 40 and rotates. Specifically, in this embodiment, the transmission assembly further includes a first transmission gear 41, a second transmission gear 42, and a third transmission gear 44. The first transmission gear 41 and the second transmission gear 42 are mutually meshing two-stage bevel gears used to transmit the driving force from the power receiving unit 40 in a different direction. Specifically, the first transmission gear 41 and the second transmission gear 42 each have a straight tooth portion and a bevel tooth portion. The driving gear 43 meshes with the straight tooth portion of the first transmission gear 41, and the bevel tooth portion of the first transmission gear 41 meshes with the bevel tooth portion of the second transmission gear 42. When the driving force on the driving gear 43, which rotates about an axis extending in a first direction, is transmitted to the second transmission gear 42, the second transmission gear 42 rotates about an axis extending in a third direction. The spur gear portion of the second transmission gear 42 meshes with the third transmission gear 44. The third transmission gear 44 is fixed and rotates coaxially with any one of the support shafts 136 (preferably the first support shaft near the drive end). At the same time, the support shafts 136 on the multiple rotating parts 135 are connected by a belt 137 (or a chain). That is, the third transmission gear 44 drives the multiple rotating parts 135 to rotate, so that the rotating parts 135 deliver the developer to the powder feeding roller 131.

[0088] like Figure 7 As shown, this is a variation of Embodiment 3, in which the rotating member 135 does not receive driving force from the power receiving unit 40 to rotate. Specifically, in this embodiment, the support shafts 136 of the multiple rotating members 135 are connected only by belts 137 (or chains), and there are no gears such as the first transmission gear 41 to transmit driving force to the rotating members 135. In this embodiment, the rotation axis of the rotating member 135 is inclined to the first direction and the third direction, so that the multiple rotating members 135 contact the roller body 1311. At the same time, when the developing roller 131 rotates, the component of friction can make the rotating member 135 rotate together with the developing roller 131 to feed powder to the developing roller 131.

[0089] Electrode 123 also includes a third electrical contact (not shown) that contacts the rotating member 135 to electrically connect the electrode to the powder feeding member. That is, electrode 123 transfers electrical energy to the developing roller 131 and the powder feeding member. In other embodiments, electrode 123 may not be electrically connected to the rotating member 135.

[0090] The rotating component 135 can be made of a soft material, allowing it to deform under the pressure of the roller body 1311 when its circumferential surface contacts the roller body 1311. This increases the contact area between the rotating component 135 and the roller body 1311, thus better delivering the developer to the roller body 1311. In some embodiments, the rotating component 135 can be made of a porous material, such as sponge or rubber, which has microporous structures to better absorb the developer. In this embodiment, the rotating component 135 is made of a conductive material, such as a conductive sponge, which is electrically connected to the electrode 123 and thus charged, allowing for better absorption of the developer. In other embodiments, the rotating component 135 may not be electrically connected to the electrode 123, i.e., it may not be charged, and may be made of an insulating material.

[0091] Example 4

[0092] This embodiment is similar to Embodiment 2, except that the structure of the powder feeding component 133 is different.

[0093] like Figure 8-9 As shown, the developing cartridge 1 is detachably mounted on the drum assembly 2. The developing cartridge 1 and the drum assembly 2 can be detachably installed together in the image forming apparatus. The drum assembly 2 includes a right frame 21 and a left frame 22, which are arranged opposite to each other in a first direction. After the developing cartridge 1 is installed on the drum assembly 2, the developing cartridge 1 and the drum assembly 2 are essentially integrated, sharing an end face. The photosensitive drum 24 is at least partially covered by the front frame. The photosensitive drum 24 is used to receive the developer provided by the developing cartridge 1, which is mainly toner, to form an electrostatic latent image and display the image on an imaging sheet (e.g., paper). The drum assembly 2 also includes a first guide rail 211 and a second guide rail 221. The first guide rail 211 is located on the right frame 21, and the second guide rail 221 is located on the left frame 22. The first guide rail 211 and the second guide rail 221 are used to guide the developing cartridge 1 to be installed more conveniently on the drum assembly 2 during the installation process. The drum assembly 2 is also provided with a first pusher 212 and a second pusher 222. The first pusher 212 is close to the right frame 21, and the second pusher 222 is close to the left frame 22. The first pusher 212 and the second pusher 222 are symmetrically arranged in the first direction. The first pusher 212 is also provided with a first elastic element (not shown in the figure) between itself and the drum assembly 2 in the second direction. The second pusher 222 is provided with a second elastic element (not shown in the figure) between itself and the drum assembly 2 in the second direction. Due to the presence of the elastic element, when the developing cartridge 1 is installed on the drum assembly 2, the elastic element applies a pushing force towards the photosensitive drum 24 in the second direction to the developing cartridge 1 through the two symmetrically arranged pushers.

[0094] like Figure 10-18As shown, the embodiment provides a developing cartridge 1, which comprises a cartridge body 10, a developing assembly, a conductive assembly, and a detected assembly.

[0095] The cartridge body 10 has a first end 11 and a second end 12 oppositely arranged in a first direction, a third end 13 and a fourth end 14 oppositely arranged in a second direction, and a fifth end 15 and a sixth end 16 oppositely arranged in a third direction. A first cover 111 is detachably arranged at the first end 11 of the cartridge body 10. The first cover 111 is fixedly mounted on the cartridge body 10 in a detachable manner. The first cover 111 has a first guide 1111, which is a cylindrical protrusion extending away from the cartridge body 10 in the first direction. The first guide 1111 is used to cooperate with a first guide rail 211 on the drum assembly 2 during installation of the developing cartridge 1 to the drum assembly 2.

[0096] The developing cartridge 1 is provided with a developing roller 131, a powder outlet knife 132, and a powder feeding member 133 at the third end 13. The developing roller 131 comprises a roller main body 1311 and a roller shaft 1312. The developing roller 131 is further provided with a sealing sponge at both ends fixed to the cartridge body 10, which comprises a first sealing sponge 1341 and a second sealing sponge 1342. In the first direction, the sealing sponge is fixed to the cartridge body 10, and the roller main body 1311 of the developing roller 131 is mounted on the cartridge body 10 through the sealing sponge 134, which can effectively prevent the leakage of the developer and the wear caused by the hard interference between the roller main body 1311 and the cartridge body 10, i.e., the sealing sponge is located between the roller main body 1311 and the cartridge body 10. The developing roller 131 contacts a photosensitive drum 24 on the drum assembly 2, and the developing roller 131 transfers the developer to the photosensitive drum 24.

[0097] In the present application, the second bearing 122 is further provided with a second guide 1221, which cooperates with a second guide rail 221 on the drum assembly 2 after the developing cartridge 1 is installed in the drum assembly 2. When the developing cartridge 1 is installed in the drum assembly 2, the first guide 181 and the second guide 1221 cooperate with the first guide rail 211 and the second guide rail 221, respectively, so that the developing cartridge 1 can be correctly and quickly installed with the drum assembly 2.

[0098] The developing cartridge 1 further comprises a first bearing 112 and a second bearing 122, which are oppositely arranged at the first end 11 and the second end 12 of the cartridge body 10, to support the rotation of the developing roller 131 relative to the cartridge body 10 and limit the rotation of the developing roller 131, so as to prevent the developing roller 131 from moving during rotation. The first bearing 112 is made of a conductive material, and the first bearing 112 is further provided with a first groove 1121 and a second groove.

[0099] In the present application, the first bearing 112 and the second bearing 122 are made of conductive material, in other embodiments, one of the first bearing 112 and the second bearing 122 can be made of conductive material, and the other can be made of non-conductive material. It can also be that the first bearing 112 and the second bearing 122 are both made of non-conductive material, which is not limited in the present application.

[0100] The developing cartridge 1 further includes a powder outlet blade 132 for contacting the developing roller 131 and controlling the thickness of the developer layer on the roller body 1311 of the developing roller 131. The powder outlet blade 132 extends in the first direction.

[0101] It is known that the powder outlet blade 132 in the present application is a steel blade, and in some embodiments, the powder outlet blade 132 can be made of other materials, which can be conductive material or non-conductive insulating material. As viewed in the first direction, the blade holder of the powder outlet blade 132 is generally L-shaped.

[0102] As shown in Figure 12-15 The developing cartridge 10 further includes a powder feeding member 133, which is specifically implemented as a powder feeding net. In the present application, the developing cartridge 1 does not have a powder feeding roller and a corresponding powder feeding gear, and the powder feeding member 133 is fixedly arranged and does not receive driving force from the force receiving portion. The powder feeding member 133 extends in the first direction and is supported by both ends of the cartridge body 10. The powder feeding member 133 is farther from the photosensitive drum 24 than the developing roller 131 in the second direction, and the powder feeding member 133 has a certain distance from the roller body 1311 in the second direction. The powder feeding member 133 includes a conductive portion 1331 and a grid portion 1332. In the first direction, the conductive portion 1331 is arranged at the right end of the powder feeding member 133 (the end close to the first end 11 in the first direction, as shown by the solid line of the conductive portion 1331 in Figure 13 When the powder feeding member 133 is installed on the developing cartridge 1, the conductive portion 1331 is connected with the first bearing 112, specifically through the second groove on the first bearing 112.

[0103] In the present embodiment, the powder feeding member 133 is made of hard material, and a plurality of through holes are arranged on the powder feeding member 133. Unlike the powder feeding member 133 directly made of material with fine hole structure in other embodiments, the through holes in the present embodiment are formed by machining on the hard material. The powder feeding member 133 is made of conductive material.

[0104] The developing cartridge 1 further comprises a bracket 17 and a storage medium 18, the storage medium 18 has an electrical contact surface 181, the storage medium 18 is detachably mounted on the bracket 17, the bracket 17 is provided with buckles, and the bracket 17 is detachably mounted on the first cover 111 through the buckles. In the second direction, the storage medium 181 is closer to the fourth end 14 relative to the developing roller 131. In other applications, the storage medium 171 can be fixed on the bracket 17 by clamping or welding, and the specific limitation is not limited.

[0105] The cartridge body 1 is further provided with a second cover 121 on the second end 12, the second cover 121 is detachably mounted on the cartridge body 10, the second cover 121 is provided with an electrode 123, the electrode 123 is electrically connected with the powder outlet knife 132, the roller main body 1311 is powered through the powder outlet knife 132, and the specific structure and power supply process are similar to those of the first embodiment. The only difference from the first embodiment is that the electrode 123 is only electrically connected with the powder outlet knife 132, and other details are not described in detail. The second cover 121 is also used for protecting the detected components, which include the first gear 50, the second gear 51 and the detected component 52. Specifically, the second cover 121 is used for protecting the detected component 420. After the developing cartridge 1 and the drum assembly 2 are installed in the image forming device, the detection component in the image forming device can detect the detected component, thereby identifying the developing cartridge 1, and completing the machine recognition of the developing cartridge.

[0106] As shown in Figure 14 The powder outlet knife 132 is electrically connected with the electrode 123 at one end, and the other end is connected with the first bearing 112 through the first groove 1121. The first bearing 112 is made of conductive material. The conductive part 1331 on the powder feeding part 133 is connected with the first bearing 112 through the second groove, that is, the electrode 123, the powder outlet knife 132, the first bearing 112 and the powder feeding part 133 are sequentially electrically connected, so that the electrode 123 is electrically connected with the powder outlet knife 123. The electrode 123 supplies power to the developing roller 131 at the same time, and supplies power to the powder feeding part 133 through the first bearing 112, so that the powder feeding part 133 also has voltage.

[0107] When the developing cartridge 1 starts to work, the electrode 123 charges the powder feeding part 133 through the powder outlet knife 123, and the powder feeding part 133 also has a plurality of grid parts 1332. The grid part 1332 is a through hole, which is arranged and combined on the powder feeding part 133 along the first direction and the second direction. The powder in the cartridge body 10 can be uniformly ionized through the grid part 1332 on the powder feeding part 133, so as to be better adsorbed on the roller main body 1311 of the developing roller 131, and the developing work is completed.

[0108] As shown in Figure 16As shown, the developing cartridge 1 is also provided with a powder inlet 123 at the second end 12, for powder filling into the cartridge body 10 of the developing cartridge 1, which is also provided with a cover at the powder inlet, for sealing the powder inlet 123 after powder filling, to prevent carbon powder from leaking out of the cartridge body 10 through the powder inlet 123.

[0109] The fourth end 14 of the developing cartridge 1 in the second direction is also provided with a first pushing part 1112 and a second pushing part 1212, in this embodiment, the first pushing part 1112 and the second pushing part 1212 are both provided on the cartridge body 10, and the remaining structure is completely the same as that of the first embodiment, the pushing part can be a U-shaped or C-shaped or V-shaped protrusion, or other shapes, which are not specifically limited herein, the first pushing part 1112 and the second pushing part 1212 cooperate with the first pushing member 212 and the second pushing member 222 of the drum assembly 2 in the state that the developing cartridge 1 is installed on the drum assembly 2, to receive the pushing force in the second direction towards the photosensitive drum 24 applied by the first pushing member 212 and the second pushing member 222, so that the developing roller 131 on the developing cartridge 1 can be tightly attached to the photosensitive drum 24.

[0110] As shown, Figure 17 In this application, when the developing cartridge 1 is installed together with the drum assembly 2 in the image forming device, the developing roller 131 is tightly attached to the photosensitive drum 24 under the action of the pushing force, when the image forming device applies a driving force to the photosensitive drum through the drum driving head, so that the photosensitive drum rotates, the developing roller 131 tightly attached to the photosensitive drum 24 can also be driven to rotate together with the photosensitive drum 24 due to the friction force.

[0111] In this application, in order to enable the developing roller 131 to generate sufficient friction force with the drum assembly 24, in this application, the developing roller 131 is made to be more tightly attached to the photosensitive drum by increasing the pushing force, so as to provide the friction force required for the photosensitive drum 24 to drive the developing roller 131, the way of increasing the pushing force includes increasing the elastic force of the elastic member between the pushing part and the drum assembly, or increasing the size of the pushing protrusion in the second direction, so that when the developing cartridge 1 is installed on the drum assembly 2, the elastic member is compressed more severely, thereby generating a greater pushing force. In addition to the way of increasing the pushing force to increase the friction force, the material of the roller body 1311 can also be changed to increase the friction force between the developing roller 131 and the photosensitive drum 24. The friction force between the developing roller 131 and the photosensitive drum 24 can also be increased in other ways, which are not specifically limited herein.

[0112] As shown, Figure 18As shown, a detection component is also provided at the second end 12 of the housing 10. The detection component includes a first gear 50, which is coaxially fixed with the developing roller and can rotate with the developing roller 131. The detection component 52 is mounted on the second end 12, specifically rotatably mounted on the second bearing 122. The second gear 51 is specifically an idler gear used to connect the first gear 50 and the detection component 52. When the photosensitive drum 24 drives the developing roller 131 to rotate through friction, the first gear 50 rotates together with the developing roller 131. The first gear 50 drives the detection component 52 to rotate through the second gear 51, thereby enabling the detection component 52 to be detected by the detection component in the image forming apparatus, and the developing cartridge 1 is identified.

[0113] In this application, in order to reduce the resistance of the photosensitive drum 24 driving the developing roller 131, the developing cartridge 1 eliminates the powder feeding roller and the stirring frame. Therefore, there is no need to set up powder feeding gear, developing gear, stirring gear, drive head and drive gear. That is, there are no transmission components at the first end of the cartridge 10, which minimizes the driving resistance on the cartridge 10 and enables the photosensitive drum 24 to drive the developing roller 131 better.

[0114] It is understood that in this application, the optimal approach is to omit any transmission components (gears) at the first end of the cartridge 10 and eliminate the powder feeding roller and stirring frame. This approach minimizes the driving resistance on the developing cartridge 1, allowing the photosensitive drum 24 to drive the developing roller 131 with minimal friction. In other embodiments, depending on the friction between the photosensitive drum 24 and the developing roller 131, some components can be appropriately added. Specifically, when the friction between the developing roller 131 and the photosensitive drum 24 is sufficient to drive both the developing roller 131 and the powder feeding roller, developing gears and powder feeding gears can be provided at the first end of the cartridge 10. No specific limitations are imposed here; the choice of components to be reserved on the developing cartridge 1 depends on the actual application.

[0115] In other embodiments, the developing cartridge 1 may not be equipped with the first gear 50, the second gear 51, and the detection element 52. The developing cartridge 1 transmits its information to the image forming apparatus through voltage changes on the powder discharge blade 132, thereby being recognized by the image forming apparatus.

[0116] Furthermore, such as Figure 13 The conductive part 1331 shown by the dashed line is, in other embodiments, disposed on the side near the second end 12 of the powder feeding member 133, and the first bearing 112 does not need to be made of conductive material. The powder feeding member 133 is directly electrically connected to the electrode 123 through the conductive part 1331, or the second bearing 122 is made of conductive material, and the electrode 123 gives the powder feeding member 133 a certain voltage through the second bearing 122. The specific details are not limited here.

[0117] By canceling the powder feeding roller, setting the powder feeding member capable of conducting electricity, the developer in the box body can be normally supplied to the developing roller, the developing roller is driven to rotate by the friction force between the photosensitive drum and the developing roller, and then the driving head / driving gear is not needed to be set, and then any transmission assembly is not needed to be set at the first end of the developing box, the number of components of the developing box is greatly reduced, the manufacturing cost of the developing box is reduced, and the structure size of the developing box is simplified.

[0118] Embodiment five:

[0119] The embodiment is similar to embodiment two, and the difference mainly lies in that the structure and the setting position of the powder feeding member 133 are different.

[0120] As shown in Figure 19-21 The embodiment provides a developing box 1, which is detachably installed on a drum assembly with a rotatable photosensitive drum to form a process cartridge, and the process cartridge can be mounted on an image forming device in a detachable manner from back to front. The developing box 1 comprises a box body 10, a developing assembly, a transmission assembly and an identification assembly.

[0121] The developing assembly comprises a developing roller 131 and a stirring frame 139, both of which are rotatably supported at the first end 11 and the second end 12 of the box body 10, and the rotation axes of the developing roller 131 and the stirring frame 139 both extend along the first direction. In the second direction, the developing roller 131 is closer to the third end 13 than the stirring frame 139.

[0122] The transmission assembly comprises a driving part, which is rotatably arranged at the first end 11 of the box body 10, and the rotation axis of the driving part extends along the first direction. The driving part comprises a power receiving part 40 and a driving gear 43. The power receiving part 40 is used for receiving power output by the image forming device, and in the first direction, the power receiving part 40 is farther away from the second end 12 than the driving gear 43.

[0123] The transmission assembly further comprises a developing gear 45, an idler gear 46 and a stirring gear 47, which are directly or indirectly meshed with the driving gear 43 to receive power output by the image forming device. The developing gear 45 is coaxially and fixedly installed at one end of the developing roller 131 close to the first end 11 of the box body 1 and drives the developing roller 131 to rotate, the idler gear 46 comprises a large-diameter gear and a small-diameter gear which rotate coaxially, the large-diameter gear is meshed with the driving gear 43, the small-diameter gear is meshed with the stirring gear 47, and the stirring gear 47 is coaxially and fixedly installed at one end of the stirring frame 139 close to the first end 11 of the box body 10 and drives the stirring frame 139 to rotate.

[0124] As shown in Figure 22As shown, the cartridge 10 has a carbon powder tank 31 and a developing tank 30 in communication, and the developing tank 30 is located in front of the carbon powder tank 31 in the second direction. The carbon powder tank 31 contains a stirring frame 139, and the developing tank 30 contains a developing roller 131. The stirring frame 139 includes a frame body 1391 extending in the first direction, and two ends of the frame body 1391 are rotatably supported on the first end 11 and the second end 12 of the cartridge body. The stirring frame 139 further includes a first stirring blade 1392 extending in the first direction and fixedly arranged on the frame body 1391. The first stirring blade 1392 is rotatable with the frame body 1391. The first stirring blade 1392 is used to stir the developer in the carbon powder tank 31 to prevent the developer from caking, and to deliver the developer in the carbon powder tank 31 to the developing tank 30.

[0125] The cartridge 10 includes a partition 103 for separating the carbon powder tank 31 and the developing tank 30. The partition 103 has a cross section in the shape of an inverted V, and includes a first wall 1031 and a second wall 1032 connected to each other. The first wall 1031 is formed on the developing tank 31, and the second wall 1032 is formed on the carbon powder tank 31. The developing roller 131 is located in front of the first wall 1031 in the second direction and above the first wall 1031 in the third direction. The first stirring blade 1392 is long enough in the second direction to deliver the developer in the carbon powder tank 31 to the first wall 1031 through the second wall 1032. Since the first wall 1031 extends forward and downward, the developer delivered to the first wall 1031 slides forward and downward as it accumulates, so that the developing roller 131 can continuously receive the developer. The first wall 1031 of the partition 103 is simple in structure, and does not need to be provided with a rotatable powder delivery roller, thereby reducing the cost. The first wall 1031 can be flat or curved. The included angle A between the first wall 1031 and the second wall 1032 is about 40° to 120°, and is preferably 60° or 100°, so that the developer entering the first wall 1031 can slide to the developing roller 131. The cartridge 10 includes a lower housing 102 and an upper housing 101 covering the lower housing 102. The partition 103 is arranged on the lower housing 102.

[0126] The developing tank 30 has an opening extending in the first direction, and the developing roller 131 is located at the opening and at least partially exposed through the opening. The developing tank further includes a powder delivery blade 132 extending in the first direction. The powder delivery blade 132 is used to limit the thickness of the developer on the developing roller 131. The powder delivery blade 132 includes a blade frame body and a scraper. The position where the scraper contacts the developing roller 131 is above the first wall 1031 in the third direction. The developer scraped by the scraper falls into the first wall 1031, so that the developer can slide to the developing roller 131.

[0127] Please refer to Figure 21The developing cartridge further comprises an electrode 123 electrically connected to the image forming device to provide electricity to the developing roller 131. The developing roller 131 comprises a roller shaft and a roller body covering the roller shaft, the roller body being configured to receive the developer, and the electrode 123 is electrically connected to the roller body to further charge the developer on the developing roller 131. The electrode 123 is specifically installed on one end of the roller shaft close to the second end 12.

[0128] Further, the first wall 1031 is provided with a powder feeding member 133 fixedly arranged relative to the first wall 1031 and in contact with the roller body, so that the developing roller 131 generates friction with the powder feeding member 133 when rotating to charge the developer, so that the developer can better adhere to the roller body with a certain voltage. The powder feeding member 133 specifically matches the shape of the first wall 1031, and is attached to the first wall 1031, so that the installation process of the powder feeding member 133 is simple and the powder feeding member 133 can be reliably fixed to the first wall 1031. The developer transported to the first wall 1031 by the second wall 1032 accumulates on the powder feeding member 133, and as the developer accumulates, the developer slides forward and downward to the developing roller 131. The powder feeding member 133 is preferably made of rubber, and the rubber surface has a fine porous structure that can adsorb the developer. The developing roller 131 rotates while adsorbing the developer by friction with the powder feeding member 133 to charge the developer. The powder feeding member 133 is preferably in the form of a sheet or a strip.

[0129] In some embodiments, the powder feeding member 133 can be made of a conductive material, such as conductive sponge, and the powder feeding member 133 is directly electrically connected to the electrode 123.

[0130] As Figure 23 As a variant of the present embodiment, the powder feeding member 133 is not a sponge attached to the first wall 1031, but a roller-shaped portion that does not contact the developing roller 131. The powder feeding member 133 can rotate relative to the cartridge 10 to stir the developer accumulated on the first wall 1031, so that the developer quickly slides forward and downward to the developing roller 131. The powder feeding member 133 is fixedly provided with a second stirring blade 1333, which rotates with the powder feeding member 133 and stirs the developer accumulated on the first wall 1031 to make the developer slide to the developing roller 131. The second stirring blade 1333 does not contact the developing roller 131, and the second stirring blade 1333 does not need to receive electricity from the electrode 123. In other embodiments, the powder feeding member 1333 can also move back and forth in the second direction.

[0131] Furthermore, in other ways, the powder feeding component 133 of the roller section may not have a second stirring blade 1333. The powder feeding component 133 may be made of conductive material, such as a steel shaft or iron wire, and is set near the developing roller 131. At the same time, the powder feeding component 133 is connected to the electrode 123, so that the powder feeding component 133 is charged, thereby ionizing the developer accumulated on the first wall 1031, so that the developer is charged and thus better adheres to the roller body.

[0132] Another variation of this embodiment is a combination of Embodiment 5 and the variation, wherein the developing cartridge 1 has both a sponge that directly contacts the developing roller 131 and a roller-shaped part. In this case, the powder feeding part 133 of the developing cartridge 1 is a sponge that directly contacts the developing roller 131 and charges the developer through friction, while the roller-shaped part stirs the developer accumulated in the developing chamber 30 through the stirring blades on it, making the frictional powder feeding between the developing roller 131 and the powder feeding part 133 more efficient.

[0133] Example 6

[0134] like Figure 24 As shown, unless otherwise specified, the structure in this embodiment is the same as that in Embodiment 5. The difference between this embodiment and Embodiment 5 is that the developing chamber 30 in this embodiment is provided with a powder feeding component 133, which is specifically a powder feeding roller. Viewed from the first direction of the housing 10, the powder feeding component 133 overlaps with the developing roller 131 in the third direction. The projection of the powder feeding component 133 in the third direction largely overlaps with the projection of the developing roller 131 in the third direction, increasing the amount of developer that the developing chamber 30 can hold. Preferably, the powder feeding component 133 is located directly below the developing roller 131 in the third direction. The powder feeding component 133 includes a powder feeding roller shaft and a powder feeding roller body covering the powder feeding roller shaft. The powder feeding roller body is rotatably supported at both ends of the housing 10 at the first end 11 and the second end 12 along the first direction. The powder feeding roller body receives the developer in the developing chamber.

[0135] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, or the above technical solutions can be freely combined, including freely combining the technical features of the different embodiments described above. All of these fall within the protection scope of this utility model.

Claims

1. A developing cartridge for detachably mounting to an image forming apparatus, characterized by, The development cartridge comprises: a cartridge body for accommodating a developer, the cartridge body having a first end and a second end in a first direction; a development roller rotatably provided on the cartridge body about an axis extending in the first direction, the development roller comprising a roller shaft and a roller body rotating with the roller shaft; a storage medium comprising an electrical contact surface provided at the first end; an electrode provided at the second end and electrically connected to the roller body; and a powder feeding member for feeding the developer to the roller body, the powder feeding member not rotating about an axis extending in the first direction or the powder feeding member not being electrically connected to the roller body. The powder feeding member is fixedly provided on the cartridge body and does not rotate about an axis extending in the first direction.

2. The process cartridge according to claim 1, wherein, The powder feeding member is arranged in contact with the roller body and feeds the developer to the roller body by friction with the roller body.

3. The process cartridge of claim 2 wherein, The cartridge body comprises a partitioning portion for partitioning a space in the cartridge body into a toner chamber and a development chamber in communication with each other, the development roller being provided in the development chamber; 4. The process cartridge of claim 3 wherein, The partitioning portion comprises a first wall formed in the development chamber and a second wall formed in the toner chamber, the powder feeding member being fixedly provided on the first wall. An included angle between the first wall and the second wall is 40° to 120°.

5. The process cartridge of claim 4 wherein, The powder feeding member is made of a soft material.

6. The process cartridge of claim 3 wherein, The powder feeding member is made of sponge or rubber.

7. The process cartridge of claim 6 wherein, The powder feeding member is not in contact with the roller body.

8. The process cartridge of claim 2, wherein, The powder feeding member is made of a hard material, the powder feeding member having a plurality of through holes through which the developer is fed to the roller body.

9. The process cartridge of claim 8 wherein, The powder feeding member is made of metal or resin.

10. The process cartridge of claim 9 wherein, The powder feeding member does not rotate about an axis extending in the first direction, the powder feeding member comprising a rotating member rotating about an axis intersecting the first direction, a circumferential surface of the rotating member being in contact with the roller body to feed the developer thereto.

11. The process cartridge of claim 1, wherein, The rotating member has a plurality of rotating members arranged in the first direction, rotating axes of the plurality of rotating members being parallel to each other and adjacent rotating members being in contact with each other.

12. The process cartridge of claim 11, wherein, The development cartridge further comprises a power receiving portion and a plurality of bevel gears in driving connection with the power receiving portion, the plurality of rotating members being connected by a chain or a belt, the power receiving portion transmitting driving force to the rotating members through the plurality of bevel gears to drive the plurality of rotating members to rotate together. The powder feeding member is made of an electrically conductive material.

13. The process cartridge according to any one of claims 2 to 12, wherein, The powder feeding member is not electrically connected to the roller body, the powder feeding member rotating about an axis extending in the first direction and being in contact with the roller body.

14. The process cartridge of claim 1, wherein, The roller shaft does not receive electric power.

15. The developer cartridge of any one of claims 1 to 12, 14, wherein, The development cartridge comprises a powder discharge blade for adjusting a thickness of a developer layer on the roller body, the electrode being electrically connected to the roller body through the powder discharge blade.

16. The developer cartridge of claim 1, wherein, ​

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