Developing box

Abstract

The utility model discloses a developing box. The developing box comprises a shell, a developing roller; an input gear; the chip is provided with an electric contact surface, and the electric contact surface is located on the first side of the shell in the left-right direction; a first cover for covering at least a portion of the input gear; a second cover disposed on the first cover and farther from a second side of the housing than the first cover in the left-right direction; the chip rack is used for supporting a chip; a chip assembly mounting portion formed between the first cover and the second cover, the chip assembly mounting portion for accommodating the chip rack; a guide groove is formed in the top of the first cover and / or the second cover in the vertical direction, and the guide groove is used for guiding the chip rack to be mounted on the chip assembly mounting part; compared with the prior art, the developing box disclosed by the utility model has the advantages that a user can conveniently dismount the chip and the chip rack in the old developing box after the service life is ended and mount the chip and the chip rack on a new developing box, so that the chip can be used for many times, and the use cost of the developing box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, and in particular to a developing box, a mounting bracket and a chip recycling method. Background Art

[0002] The prior art discloses a developing box that can be detachably installed in an imaging device, the developing box including a frame for storing developer, a chip rack arranged on the frame and a chip installed in the chip rack, wherein the chip stores relevant information of the developing box, such as model, maximum number of printing pages, etc. When the developing box is installed in the imaging device, the chip can establish a communication connection with the imaging device and can identify relevant information of the developing box, such as model, maximum number of printing pages, etc.; when the developing box is used for a period of time and the developer is exhausted, the user usually replaces the developing box with a new one and discards the old one; however, the chip in the developing box has multiple printing lives, and if it is discarded together with the old developing box, it will cause unnecessary waste and even pollute the environment, and also increase the cost of using the developing box; therefore, to solve this problem, it is necessary to remove the chip from the old developing box and install it in a new developing box without the chip installed, so as to achieve reuse. Utility Model Content

[0003] Therefore, the present invention provides a developing cartridge to solve the above technical problems, which is mainly achieved through the following technical solutions:

[0004] A developing cartridge, comprising:

[0005] A housing having a first side and a second side separated from the first side in a left-right direction;

[0006] a developing roller rotatable about a developing roller axis extending in the left-right direction;

[0007] an input gear, configured to receive a driving force from outside the developing cartridge and drive the developing roller to rotate, the input gear being located on the first side of the housing in the left-right direction;

[0008] a chip having an electrical contact surface, the electrical contact surface being located on the first side of the housing in the left-right direction;

[0009] a first cover, configured to cover at least a portion of the input gear;

[0010] a second cover, disposed on the first cover and further away from the second side of the housing than the first cover in the left-right direction;

[0011] A chip rack, used for supporting the chip;

[0012] a chip assembly mounting portion formed between the first cover and the second cover, the chip assembly mounting portion being used to accommodate the chip rack;

[0013] A guide groove is formed at the top of the first cover and / or the second cover in the up-down direction, and the guide groove is used to guide the chip frame to be installed on the chip assembly installation portion.

[0014] Furthermore, the chip rack extends outwardly in the left-right direction to form a plurality of protrusions, the plurality of protrusions including a first protrusion, a second protrusion and a third protrusion, and the first protrusion, the second protrusion and the third protrusion are all constructed as columns extending in the left-right direction.

[0015] Furthermore, the first cover has a first recess and a second recess, and the first recess and the second recess are formed by being recessed inward from the left side of the first cover in the left-right direction;

[0016] The chip frame extends from a side close to the first cover in the left-right direction to form the first protrusion and the second protrusion;

[0017] The guide groove includes a first guide groove opened on the top of the first cover, and the first protrusion and the second protrusion can pass through the first guide groove in sequence and enter the inside of the first recess and the second recess.

[0018] Furthermore, the second cover includes a through hole, and the through hole penetrates the second cover in the left-right direction;

[0019] The chip frame extends the third protrusion on one side close to the second cover in the left-right direction;

[0020] The guide groove includes a second guide groove opened on the top of the second cover, and the third protrusion enters the through hole through the second guide groove.

[0021] Furthermore, the first cover has a first recess and a second recess, and the first recess and the second recess are arranged in a vertical direction;

[0022] A third guide groove communicating with the first recess is provided between the first recess and the second recess.

[0023] Furthermore, the third guide groove includes a guide surface facing upward in the up-down direction and a stop surface facing downward in the up-down direction.

[0024] Furthermore, a third guide groove is provided on the top of the second cover, and the third guide groove is constructed in an inverted "eight" shape.

[0025] Furthermore, the second cover includes a mounting portion, two support columns, and a connecting portion for connecting the two support columns;

[0026] The mounting portion is located on the right side of the support column in the left-right direction, and the second cover is connected to the first cover through the mounting portion.

[0027] Furthermore, the second cover and the first cover are integrally formed.

[0028] Furthermore, the first cover and / or the second cover are made of elastically deformable material. Beneficial effects

[0029] The developer box of the present invention allows users to conveniently disassemble and install the chips with chips radially; users can conveniently remove the chips and chip racks in the old developer box after the life of the chips has ended, and install them on the new developer box, thereby realizing the multiple use of the chips and reducing the use cost of the developer box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 1 of the present utility model;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 1 of the present utility model from another angle;

[0032] Figure 3 It is a vertical cross-sectional view of the developing cartridge in Example 1 of the present utility model;

[0033] Figure 4 This is a schematic diagram of the exploded structure of the left end portion of an embodiment of the developing cartridge in Example 1 of the present utility model;

[0034] Figure 5 This is a schematic diagram of the exploded structure of the left end portion of another embodiment of the developing cartridge in Example 1 of the present utility model;

[0035] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting bracket in Example 1 of the present utility model;

[0036] Figure 7 This is a schematic structural diagram of the protective cover and the mounting bracket in Example 1 of the present utility model;

[0037] Figure 8 This is a schematic structural diagram of the chip frame protective cover and mounting bracket in Example 1 of the present invention;

[0038] Figure 9 This is a schematic diagram of the exploded structure of the left end portion of the developing cartridge in Example 2 of the present utility model;

[0039] Figure 10 It is a structural schematic diagram of the chip frame protective cover and the mounting bracket in Example 2 of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and technical effect of the embodiment of the present invention more clear, the technical solution of the developer cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiment described is only a preferred embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention. Example 1

[0041] like Figure 1-5The present invention shows a developing box 100, which can be detachably mounted to the drum box and detachably mounted to the electronic photographic imaging device together with the drum box; the developing box 100 includes a shell 101, the shell 101 includes a main body 101a for accommodating developer and an end cover 101b detachably mounted on the left side of the main body 101a; the end cover 101b can cover at least part of the gear system in the developing box 100, the gear system includes but is not limited to an input gear 111, a stirring frame gear, a powder feeding roller gear, a developing roller gear and a plurality of connecting gears, the input gear 111 is arranged on the left side of the shell 101, the input gear 111 can be connected to a driving member (not shown) of the imaging device to receive the driving force of the imaging device to drive the input gear 111 to rotate around a driving gear axis extending in the left-right direction. The input gear 111 is engaged with the powder feeding roller gear and the developing roller gear, so that the input gear 111 can drive the powder feeding roller gear and the developing roller gear to rotate. The input gear 111 is engaged with the stirring frame gear through the idler gear to transmit the driving force to the stirring frame gear, thereby driving the input gear 111 to rotate. The developing box 100 also includes a developing roller 104, a powder feeding roller 103 and a stirring frame 102 supported on the shell 101. The left ends of the developing roller 104, the powder feeding roller 103 and the stirring frame 102 are respectively connected to the developing roller gear, the powder feeding roller gear and the stirring frame gear, so that each gear can respectively drive the developing roller 104, the powder feeding roller 103 and the stirring frame 102 to rotate around their respective axes extending in the left and right directions; the developing roller 104 is arranged at the front end of the shell 101 in the front-to-back direction. When the developing box 100 is installed on the drum box, the developing roller 104 can contact the photosensitive drum. During the operation of the developing box 100, the input gear 111 includes a coupling portion, which is connected to the driving member of the imaging device to receive the imaging device. The driving force of the device drives the stirring frame 102, the powder feeding roller 103 and the developing roller 104 to rotate respectively. The stirring frame 102 stirs the developer inside the shell 101 and feeds the developer to the powder feeding roller 103. The powder feeding roller 103 continues to stir the developer and feeds it to the developing roller 104. The developing roller 104 feeds the developer on it to the photosensitive drum through its contact with the photosensitive drum to develop the electrostatic latent image on the photosensitive drum; the developing box 100 also includes an electrode 105, and the electrode 105 has an electrical connection part. The electrical connection part can be connected to the power supply device of the imaging device to receive the power provided by the imaging device and transmit the power to the developing roller 104 and the powder feeding roller 103, thereby ensuring the smooth transportation of the developer.

[0042] Optionally, the developer box 100 cover includes a toggle protrusion 150 and a counting gear engaged with the stirring frame gear, and the counting gear can rotate with the stirring frame gear, and the counting gear is constructed as a half-tooth gear; the toggle protrusion 150 also includes a transmission rod 151, and the transmission rod 151 spans the left and right sides of the developer box 100 in the left and right directions. The toggle protrusion 150 is arranged on the right side of the transmission rod 151, and the toggle protrusion 150 is arranged above the right side of the shell 101. The transmission rod 151 can move in the left and right directions under the drive of the counting gear and drive the toggle protrusion 150 to move in the left and right directions. The toggle protrusion 150 can toggle the counting device of the imaging device to complete the counting.

[0043] The developer cartridge 100 further includes a chip holder 170 and a chip 180 supported by the chip holder 170. The chip holder 170 is located on the left side of the housing 101 in the left-right direction, and is closer to the rear side of the housing 101 than the front side in the front-back direction. The chip 180 includes a storage portion (not shown) and an electrical contact surface 181. The storage portion stores information such as whether the developer cartridge 100 is new or old. The storage portion is electrically connected to the electrical contact surface 181, which can contact an electrical contact point (not shown) of the imaging device to establish an electrical connection between the chip 180 and the imaging device, thereby establishing a communication link between the developer cartridge 100 and the imaging device. When the life of the developer cartridge 100 is about to expire, the imaging device can prompt the user to replace the developer cartridge with a new one via an operation panel or indicator light.

[0044] The chip holder 170 is movable relative to the end cap 101b. A protective cover 190 is disposed on the left side of the end cap 101b to cover at least a portion of the chip holder 170. The protective cover 190 is detachably mounted to the housing 101. Specifically, the protective cover 190 is fixedly mounted on the left side of the end cap 101b. The protective cover 190, the chip holder 170, and the end cap 101 are arranged from left to right in the left-to-right direction. The chip holder 170 includes a main body 171, a force-bearing portion 172, and an elastic member 173 disposed between the main body 171 and the force-bearing portion 172. The main body 171 has a plurality of protrusions 1711 extending outward in the left-to-right direction. The protrusions 1711a and 1711b extend outward in the left-to-right direction from the right side surface of the main body 171, respectively. The protrusions 1711a and 1711b are arranged in a vertical direction. The end cap 101b includes recesses 1712a and 1712b. Recesses 1712a and 1712b are formed inwardly from the left side of end cap 101b. Recesses 1712a and 1712b are arranged in a vertical direction. Protrusion 1711c extends outwardly from the left side surface of main body 171 in the left-right direction. Protective cover 190 includes a through hole 195. Through hole 195 penetrates protective cover 190 in the left-right direction. Preferably, protrusions 1711a, 1711b, and 1711c are all cylindrical. When protective cover 190 and chip holder 170 are mounted on end cap 101b, protrusion 1711a is located within recess 1712a, protrusion 1711b is located within recess 1712b, and protrusion 1711c is located within through-hole 195, thereby confining chip holder 170 between protective cover 190 and end cap 101b. Recesses 1712a, 1712b, and through-hole 195 all extend vertically, allowing main body 171, along with protrusions 1711a, 1711b, and 1711c, to move vertically relative to housing 101. When main body 171 moves vertically, chip 180, having electrical contact surface 181, moves vertically along with chip holder 170.

[0045] A snap-fitting portion 191 is provided on one side of the protective cover 190 in the front-to-back direction, and a snap-fitting slot 191a is provided on the left side of the end cap 101 to cooperate with the snap-fitting portion 191. A connecting portion is provided on the side of the protective cover 190 in the front-to-back direction, away from the snap-fitting portion 191. In one possible implementation of this embodiment, the connecting portion is configured as a screw 192, and a first screw hole 192a and a second screw hole 192b are provided corresponding to the screw 192. The first screw hole 192a is provided on the protective cover 190, and the second screw hole 192b is provided on the end cap 101b. In another possible implementation of this embodiment, the connecting portion is configured as an elastic buckle 193, and the end cap 101 is provided with a slot 193a to cooperate with the elastic buckle 193.

[0046] Further, such as Figure 5 As shown, when viewed from the top and bottom directions, the protective cover 190 is in a "U" shape, and support columns 194 are provided on both sides of the protective cover 190 in the front-to-back direction.

[0047] In order to achieve the reuse of the chip 180, after the life of the developing box 100 ends, the user removes the protective cover 190 from the end cover 101b, so that the chip frame 170 and the chip 180 fall off the developing box 100 together; thereafter, the user installs the chip frame 170 with the chip 180 on the new developing box 100 again through the protective cover 190, so that the new developing box 100 can be used together with the chip 180 of the old developing box 100, thereby reducing the use cost of the developing box 100.

[0048] During the process of installing the chip frame 170 and the protective cover 190 to the new developing box 100, the chip frame 170 and the protective cover 190 are in a separated state. In order to facilitate the installation of the chip frame 170 to the new developing box 100, the utility model also provides a mounting bracket 10. During the process of installing the chip frame 170 and the protective cover 190 to the end cover 101b, the mounting bracket 10 is used to support the above-mentioned chip frame 170 and the protective cover 190 so that the three form a whole, which can prevent the chip frame 170 from falling during the installation process, thereby making the installation of the chip frame 170 and the protective cover 190 to the end cover 101b smoother.

[0049] like Figure 6-8 As shown, the mounting bracket 10 includes a fixing portion 11 connected to the support column 194 in the protective cover 190 , and a limiting portion 12 and a supporting portion 13 respectively connected to the upper and lower ends of the chip frame 170 . The mounting bracket 10 is in a "C" shape as a whole, and has openings facing upward and front (for the convenience of expressing the direction of the mounting bracket 10, when describing the direction of the mounting bracket 10 in this application: when the mounting bracket 10 and the protective cover 190 are installed together on the end cover 101b, the direction of the developing box 100 is used as the direction of the mounting bracket 10). In the up and down directions, the limiting portion 12 is located above the supporting portion 13, and the fixing portion 11 is located between the limiting portion 12 and the supporting portion 13; the fixing portion 11 is configured as a limiting groove that matches the external shape of the support column 194 of the protective cover 190. When the protective cover 190 is installed to the mounting bracket 10, the support column 194 of the protective cover 190 is located inside the fixing portion 11, and the fixing portion 11 also includes a plurality of limiting portions to prevent the protective cover 190 from falling off from the mounting bracket; specifically, the fixing portion 11 includes a first limiting plate 11a that prevents the protective cover 190 from moving in the left and right directions and a second limiting plate 11b that prevents the protective cover 190 from moving in the front and back directions.

[0050] The limiting portion 12 can cooperate with the guide groove 1712 at the top of the chip frame 170, and the supporting portion 13 contacts the force-bearing surface 1721 at the bottom of the chip frame 170. Under the action of the elastic member 173 in the chip frame 170, the chip frame 170 stretches in the up and down directions. At this time, the guide groove 1712 of the chip frame 170 and the force-bearing surface 1721 at the bottom of the chip frame 170 respectively abut against the limiting portion 12 and the supporting portion 13 at the bottom of the mounting bracket 10, so that the chip frame 170 is located between the limiting portion 12 and the supporting portion 13 in the up and down directions. Furthermore, the limiting portion 12 is constructed as a protrusion that can be snapped into the inside of the guide groove 1712, and the supporting portion 13 includes a recess that cooperates with the force-bearing surface 1721, which can prevent the chip frame 170 from detaching from the mounting bracket 10.

[0051] After the user fixes the chip rack 170 and the protective cover 190 together through the mounting bracket 10, the user fixes the protective cover 190 to the left side of the end cover 101b through the snap-on portion 191 and the screw 192 or the elastic buckle 193. At this time, the chip rack 170 is located between the protective cover 190 and the end cover 101b. Afterwards, the user removes the mounting bracket 10 from the protective cover 190 and the chip rack 170, thereby realizing the installation of the chip 180, so that the chip 280 can be used multiple times, reducing the use cost of the developing box 200. Example 2

[0052] Next, we will combine the Figure 9-10 Embodiment 2 of the present invention will be described in detail. Embodiment 2 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above-mentioned embodiment 1 will not be repeated in this embodiment. The difference is that, in this embodiment, the end cover 201b and the protective cover 290 have different settings from those in the above-mentioned embodiment 1.

[0053] The chip holder 270 is movable relative to the end cap 201b. A protective cover 290 is disposed on the left side of the end cap 201b to cover at least a portion of the chip holder 270. The protective cover 290 is detachably mounted to the housing 201. Specifically, the protective cover 290 is fixedly attached to the left side of the end cap 201b. The protective cover 290, chip holder 270, and end cap 201 are arranged from left to right in the left-to-right direction. The chip holder 270 includes a main body 271, a force-bearing portion 272, and an elastic member 273 disposed between the main body 271 and the force-bearing portion 272. The main body 271 has a plurality of protrusions 2711 extending outward in the left-to-right direction. A first protrusion 2711a and a second protrusion 2711b extend outward in the left-to-right direction from the right side surface of the main body 271. The first protrusion 2711a and the second protrusion 2711b are arranged in a vertical direction. The end cap 201b includes a first recess 2712a and a second recess 2712b. A first recess 2712a and a second recess 2712b are formed inwardly from the left side of the end cap 201b. The first recess 2712a and the second recess 2712b are aligned in the vertical direction. A third protrusion 2711c extends outwardly from the left side surface of the main body 271 in the left-right direction. The protective cover 290 includes a through hole 295 that extends through the protective cover 290 in the left-right direction.

[0054] Preferably, the first protrusion 2711a, the second protrusion 2711b, and the third protrusion 2711c can be cylindrical in shape. When the protective cover 290 and the chip holder 270 are mounted on the end cap 201b, the first protrusion 2711a is located within the first recess 2712a, the second protrusion 2711b is located within the second recess 2712b, and the third protrusion 2711c is located within the through-hole 295. As a result, the chip holder 270 is confined between the protective cover 2190 and the end cap 201b. The first recess 2712a, the second recess 2712b, and the through-hole 295 all extend in the vertical direction. Therefore, the main body 271 can move vertically relative to the housing 201 together with the first protrusion 2711a, the second protrusion 2711b, and the third protrusion 2711c. When the main body 271 moves in the up-down direction, the chip 280 having the electrical contact surface 281 moves in the up-down direction together with the chip holder 270 .

[0055] Furthermore, the first recess 2712a is located above the second recess 2712b in the up-down direction, the first recess 2712a and the second recess 2712b overlap at least partially in the left-right direction, a first guide groove 2731 is provided at the top of the first recess 2712a, and a second guide groove 2732 connecting the first recess 2712a and the first recess 2712b is provided between the first recess 2712a and the second recess 2712b; further, the second guide groove 2732 includes a guide surface 2732a facing the upper left and a stop surface 2732b facing downward, and the arrival surface 2732b is used to prevent the second protrusion 2711b from entering the first recess 2712a from the second recess 2712b. The protective cover 290 also includes a third guide groove 295a arranged at the top of the through hole 295. The third guide groove 295a is constructed in an inverted "eight" shape to facilitate the third protrusion 2711c to enter the interior of the through hole 295; the end cover 201b and the protective cover 290 are both made of elastically deformable materials. Preferably, the end cover 201b and the protective cover 290 are made of ABS plastic material or PM nylon material.

[0056] Alternatively, in this embodiment, the protective cover 290 is integrally provided on the left side of the end cover 201 b , that is, the protective cover 290 can be integrally formed with the end cover 201 b .

[0057] In order to reuse the chip 280, the user removes the chip holder 270 with the chip 280 from the old developing box 100, and then Figure 10As shown, the user presses the chip holder 290 from top to bottom to install the chip holder 270 toward the new developing cartridge 200 installed with the protective cover 290; specifically, first, the user moves the chip holder 290 between the end cover 201b and the protective cover 290, and aligns the first protrusion 2711a and the second protrusion 2711b with the first guide groove 2731, and the third protrusion 2711c with the third guide groove 295a. Under the action of the pressing force, the second protrusion 2711b enters the interior of the first recess 2712a from the first guide groove 2731, and the chip holder 270 moves to the second guide groove 295a under the guidance of the first recess 2712a during the downward movement. The chip holder 270 is then moved upwards into the groove 2732 and into contact with the guide surface 2732a. At this point, the third protrusion 2711c also moves upwards into the third guide groove 295a and into contact with the opening groove 295. Under the continued pressure, the second protrusion 2711b and the third protrusion 2711c exert a pushing force on the guide surface 2732a and the third guide groove 295a, respectively, causing at least a portion thereof to deform, thereby causing the second protrusion 2711b and the third protrusion 2711c to enter the interior of the second recess 2712b and the through hole 295, respectively. Simultaneously, the first protrusion 2711a passes through the first guide groove 2731 and enters the interior of the first recess 2712a. In this manner, the chip holder 270 is installed in a new developer cartridge 200, allowing the chip 280 to be reused, thereby reducing the cost of the developer cartridge 200.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A developing cartridge, comprising: A housing having a first side and a second side separated from the first side in a left-right direction; a developing roller rotatable about a developing roller axis extending in the left-right direction; an input gear, configured to receive a driving force from outside the developing cartridge and drive the developing roller to rotate, the input gear being located on the first side of the housing in the left-right direction; a chip having an electrical contact surface, the electrical contact surface being located on the first side of the housing in the left-right direction; It is characterized by further comprising: a first cover, configured to cover at least a portion of the input gear; a second cover, disposed on the first cover and further away from the second side of the housing than the first cover in the left-right direction; A chip rack, used for supporting the chip; a chip assembly mounting portion formed between the first cover and the second cover, the chip assembly mounting portion being used to accommodate the chip rack; A guide groove is formed at the top of the first cover and / or the second cover in the up-down direction, and the guide groove is used to guide the chip frame to be installed on the chip assembly installation portion.

2. The developing cartridge according to claim 1, wherein The chip rack has a plurality of protrusions extending outward in the left-right direction. The plurality of protrusions include a first protrusion, a second protrusion, and a third protrusion. The first protrusion, the second protrusion, and the third protrusion are all configured as columns extending in the left-right direction.

3. The developing cartridge according to claim 2, wherein: The first cover has a first recess and a second recess, wherein the first recess and the second recess are formed inwardly from the left side of the first cover in the left-right direction; The chip frame extends from a side close to the first cover in the left-right direction to form the first protrusion and the second protrusion; The guide groove includes a first guide groove opened on the top of the first cover, and the first protrusion and the second protrusion can pass through the first guide groove in sequence and enter the inside of the first recess and the second recess.

4. The developing cartridge according to claim 2, wherein: The second cover includes a through hole, and the through hole penetrates the second cover in the left-right direction; The chip frame extends the third protrusion on a side close to the second cover in the left-right direction; The guide groove includes a second guide groove opened on the top of the second cover, and the third protrusion enters the through hole through the second guide groove.

5. The developing cartridge according to claim 1, wherein The first cover has a first recess and a second recess, the first recess and the second recess being arranged in a vertical direction; A third guide groove communicating with the first recess is provided between the first recess and the second recess.

6. The developing cartridge according to claim 5, wherein: The third guide groove includes a guide surface facing upward in the up-down direction and a stop surface facing downward in the up-down direction.

7. The developing cartridge according to claim 1, wherein: A third guide groove is provided on the top of the second cover, and the third guide groove is constructed in an inverted "eight" shape.

8. The developing cartridge according to claim 1, wherein: The second cover includes a mounting portion, two support columns, and a connecting portion for connecting the two support columns; The mounting portion is located on the right side of the support column in the left-right direction, and the second cover is connected to the first cover through the mounting portion.

9. The developing cartridge according to claim 8, wherein: The second cover is integrally formed with the first cover.

10. The developing cartridge according to claim 1, wherein The first cover and / or the second cover are made of elastically deformable material.

Images