A developing cartridge

Abstract

The utility model provides a kind of developing box, comprising: box body is used to store developer;The inside of box body is provided with containing cavity;Developing roller can rotate around developing axis extending along first direction, developing roller is located third end;Powder feeding roller can rotate around powder feeding axis extending along first direction, powder feeding roller is located third end;Sixth end is provided with bottom wall, the extension direction of bottom wall and second direction and third direction intersect, bottom wall is extended to third end along second direction, while, in third direction, extend to sixth end, developer flows on bottom wall;Using the equipment of the utility model, developer in the inside of box body can be from flow to powder feeding roller, to ensure that powder feeding roller can be in full contact with developer.

Description

Technical Field

[0001] This application relates to the field of electronic imaging technology, specifically to a developing cartridge. Background Technology

[0002] In traditional image forming apparatuses, the developing cartridge and drum assembly are combined and installed together within the apparatus to complete the printing process. Existing developing cartridges include a housing for containing developer and a rotatable developing roller supported on the housing. Inside the housing, there is also a stirring frame and a powder delivery roller. The stirring frame agitates the developer inside the cartridge during the developing process, ensuring sufficient contact between the developer and the powder delivery roller, thus improving image quality. However, the stirring frame in the developing cartridge requires power to rotate via a transmission structure, which is detrimental to miniaturization and cost reduction. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a developing cartridge to overcome the disadvantages of the existing developing cartridges having a complex structure and being unfavorable for miniaturization design.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a developing cartridge, comprising: a cartridge body for storing developer; the cartridge body having a first end and a second end disposed opposite to each other in a first direction, a third end and a fourth end disposed opposite to each other in a second direction, and a fifth end and a sixth end disposed opposite to each other in a third direction, the first direction, the second direction and the third direction intersecting each other; a developing roller, rotating about a developing axis extending in the first direction and located at the third end; a driving unit, rotating about a driving axis extending in the first direction and located at the first end; a storage medium including an electrical contact surface electrically connected thereto; characterized in that the sixth end is provided with a bottom wall, the extending direction of the bottom wall being inclined relative to the second direction and the third direction, the bottom wall extending towards the third end in the second direction while extending towards the sixth end in the third direction.

[0005] In one embodiment, the box body is provided with anti-slip texture, which is a plurality of ribs extending in a first direction.

[0006] In one embodiment, the bottom wall includes a first bottom wall and a second bottom wall that are continuously disposed thereon, wherein the extension direction of the first bottom wall is inclined relative to the extension direction of the second bottom wall.

[0007] In one embodiment, the first bottom wall and the second direction have a first gravitational angle, and the second bottom wall and the second direction have a second gravitational angle, wherein the first gravitational angle is greater than the second gravitational angle.

[0008] In one embodiment, the first gravity angle and the second gravity angle are in the range of 20° to 70°.

[0009] In one embodiment, the housing includes a rear wall disposed at the fourth end, wherein in the second direction, the distance between the rear wall and the developing roller is not greater than the distance between the electrical contact surface and the developing roller, and the electrical contact surface extends in the second direction.

[0010] In one embodiment, in the second direction, there is a first distance between the rear wall and the drive axis, the first distance being in the range of 30mm to 60mm.

[0011] In one embodiment, in the second direction, there is a second distance between the rear wall and the developing axis, the second distance ranging from 50mm to 65mm.

[0012] In one embodiment, the rear wall has a rear wall angle with the third direction, the rear wall angle being no greater than 30°, and the electrical contact surface faces the third direction.

[0013] In one embodiment, a lifting member is also included, which, upon being abutted, causes the electrical contact surface to move upward along with the housing in the third direction.

[0014] In one embodiment, a locking member is also included, which is further away from the developing roller than the rear wall in the second direction.

[0015] In summary, this utility model has the following beneficial effects: by setting a bottom wall that can push the developer to flow, the developer inside the cartridge can automatically flow to the third end, so that the developer can fully contact the powder feeding roller. Furthermore, the absence of a stirring rack inside the cartridge contributes to the miniaturization design of the developing cartridge and simplifies costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the upper assembly of the developing cassette and drum assembly in Embodiment 1 of this utility model; Figure 2 This is a cross-sectional view of the developing cassette and drum assembly in their combined state at the first end position in Embodiment 1 of this utility model. Figure 3 For the present utility model Figure 2 Enlarged view of part A in the image; Figure 4 This is a schematic diagram of the developing cartridge in Embodiment 1 of this utility model; Figure 5 This is an exploded view of the internal structure of the developing cartridge in Embodiment 1 of this utility model; Figure 6This is a cross-sectional view of the developing cartridge along the first direction in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the electrode and developing assembly in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the structure of the first end with the identification component in Embodiment 1 of this utility model; Figure 9 This is a structural schematic diagram of the developing cartridge of Embodiment 1 of this utility model from another perspective; Figure 10 For the present utility model Figure 9 Enlarged view of position B in the image; Figure 11 This is a schematic diagram of a modified developing cartridge in Embodiment 1 of this utility model; Figure 12 This is a schematic diagram of another perspective of the modified developing cartridge in Embodiment 1 of this utility model; Figure 13 This is a cross-sectional view of the developing cartridge along the first direction in Embodiment 2 of this utility model; Figure 14 This is a schematic diagram of the first end structure with a powder filling port in Embodiment 2 of this utility model. Detailed Implementation

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0018] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1 For ease of description, using Figure 1 As shown in the diagram, the developing cartridge 1 has a first direction, a second direction, and a third direction. These three directions intersect each other and are further perpendicular to each other. In this embodiment, the left-right direction is used as the first direction, the front-back direction as the second direction, and the up-down direction as the third direction for explanation; the first, second, and third directions are not considered limiting. Image forming apparatuses use electrophotographic imaging methods to form images on recording materials, including copiers, fax machines, printers (laser beam printers, LED printers, etc.), and corresponding multifunction printers. The image forming apparatus includes a main frame. The developing cartridge 1 can be attached to the drum assembly 2 to form a processing cartridge, and then both are installed within the main frame of the image forming apparatus. The image forming apparatus includes side walls with guide rails on the side walls for the developing cartridge 1 and drum assembly 2 to pass through. The guide rails are bent in the mounting direction of the developing cartridge 1 and drum assembly 2, i.e., the guide rails have protrusions that extend downwards in the third direction. An electrical contact pin is also provided on the side wall. The contact pin can extend and retract in a third direction. The contact pin is located in a groove on the side wall. In a second direction, the contact pin is located in front of the protrusion on the guide rail. In a third direction, the bottom end of the contact pin is located above the bottom end of the protrusion on the guide rail. During the installation of the developing cartridge 1 and the drum assembly 2, the developing cartridge 1 and the drum assembly 2 first pass through the protrusion on the guide rail and then pass through the electrical contact pin.

[0021] The drum assembly 2 includes a frame for supporting the developing cartridge 1. The frame includes a first sidewall and a second sidewall disposed opposite each other in a first direction. The drum assembly 2 also includes a photosensitive drum (not shown) for receiving developer delivered by the developing cartridge 1, and the photosensitive drum is rotatably supported by the frame. The drum assembly 2 also includes a force-applying component for applying a force to the developing cartridge 1 in a second direction. The force-applying component includes a first force-applying member 21 and a second force-applying member.

[0022] like Figure 2 , Figure 3 As shown, the first force-applying member 21 is provided with a first abutting surface 211 and a second abutting surface 212. The first abutting surface 211 extends generally upward in a third direction, while the second abutting surface 212 extends forward in a second direction and downward in a third direction. The force-applying assembly also includes a first elastic member 213, which provides the first force-applying member 21 with a forward force in a second direction. When the first force-applying member 21 moves backward in a second direction, the first elastic member 213 is compressed and has an elastic force.

[0023] The developing cartridge 1 includes a cartridge body 10, a developing assembly, a transmission assembly, a pushing assembly, and a recognition assembly. The cartridge body 10 has a first end 11 (right end) and a second end 12 (left end) opposite to each other in a first direction; the cartridge body 10 has a third end 13 (front end) and a fourth end 14 (rear end) opposite to each other in a second direction; the cartridge body 10 has a fifth end 15 (upper end) and a sixth end 16 (lower end) opposite to each other in a third direction. The cartridge body 10 contains developer supplied to the photosensitive drum. A receiving cavity is provided inside the cartridge body 10 for containing the developer. The inner surfaces of the first end 11, the second end 12, the fourth end 14, the fifth end 15, and the sixth end 16 together define the receiving cavity, and each of the first end 11, the second end 12, the fourth end 14, the fifth end 15, and the sixth end 16 has an inner surface facing the receiving cavity and an outer surface facing away from the receiving cavity. The receiving cavity includes a receiving chamber and a developing chamber; the receiving chamber and the developing chamber are interconnected, and in the second direction, the receiving chamber is closer to the fourth end 14 than the developing chamber. When developer is filled into the receiving chamber, the developer can be stored in the receiving compartment, and the developer can flow from the receiving compartment to the developing compartment. The developing cartridge 1 also includes a handle for the user to pick up.

[0024] like Figure 5 As shown, the box body 10 includes a first box body 101 and a second box body 102. The first box body 101 is container-shaped, and the second box body 102 is lid-shaped. The two are fixedly connected together by welding to form a receiving cavity. In some embodiments, the first box body 101 and the second box body 102 can also be fixed to each other by adhesive.

[0025] In the third direction, the first box 101 is closer to the fifth end 15 than the second box 102, that is, the first box 101 is above the second box 102. Dividing the box 10 into the first box 101 and the second box 102 can reduce the injection molding difficulty and processing cost of the box 10, and improve the processing efficiency of the box.

[0026] like Figure 6 and Figure 9 As shown, the box body 10 includes a rear wall 140. When the box body 10 is an integral structure, the rear wall 140 can be the entire rear wall of the box body 10. When the box body is divided into a first box body 101 and a second box body 102, the rear wall 140 is disposed on the first box body 101, and the bottom edge of the rear wall 140 coincides with the bottom edge of the first box body 101. When the first box body 101 and the second box body 102 are combined, the bottom edge of the rear wall 140 is combined with the rear end edge of the bottom wall 160. In this embodiment, the extension direction of the rear wall 140 is parallel to a third direction, that is, the rear wall 140 is disposed along the vertical direction.

[0027] In some embodiments, the rear wall 140 may be disposed on the second housing 102, the top edge of the rear wall 140 coincides with the top edge of the second housing 102, and when the first housing 101 and the second housing 102 are joined together, the top edge of the rear wall 140 is joined with the rear end edge of the top wall 150.

[0028] In some embodiments, the rear wall 140 may be divided into a first rear wall and a second rear wall along a first direction. The first rear wall is disposed on the first housing 101 and the second rear wall is disposed on the second housing 102. When the first housing 101 and the second housing 102 are joined together, the bottom edge of the first rear wall and the top edge of the second rear wall are joined together.

[0029] like Figure 4 , Figure 5 , Figure 7As shown, the developing assembly includes a developing roller 131 and a powder feeding roller 132, both of which are rotatably supported by the cartridge 10. Further, the powder feeding roller 132 and the developing roller 131 are rotatably supported within the developing chamber. The developing roller 131 rotates about a developing axis extending along a first direction, and the powder feeding roller 132 rotates about a powder feeding axis extending along the first direction. The developing roller 131 and the powder feeding roller 132 are arranged adjacent to each other, with the powder feeding roller 132 transferring developer to the developing roller 131, which in turn transfers the developer to the photosensitive drum. The developing roller 131 includes a developing body 1311 and a developing roller shaft 1312. The developing roller shaft 1312 drives the developing body 1311 to rotate. The developing body 1311 is used to absorb developer. The developing body 1311 and the developing roller shaft 1312 are not electrically connected; preferably, the surface of the developing roller shaft 1312 is an insulating layer. The powder feeding roller 132 includes a powder feeding body 1321 and a powder feeding roller shaft 1322. The developing assembly also includes a powder discharging blade 133, which contacts the developing body 1311 to control the thickness of the developer layer on the developing body 1311. In the prior art, the developing assembly also includes a rotatable stirring frame (a stirring frame is defined as a component that can be used to disperse the developer in the receiving cavity), which can push the developer inside the receiving cavity toward the third end 13, so that the developer is in full contact with the powder feeding roller 132.

[0030] like Figure 5 and Figure 6 As shown, in this embodiment, the developing chamber 1 does not have a stirring rack. To allow the developer to flow from the receiving chamber to the developing chamber, the chamber body 10 has a bottom wall 160, which is integrally formed with the chamber body. The bottom wall 160 has a planar structure and extends from the fourth end 14 toward the third end 13. The extension direction of the bottom wall 160 is equivalent to the second direction and the third direction being inclined. While extending forward along the second direction, the bottom wall 160 also extends toward the sixth end 16 along the third direction. The bottom wall 160 and the second direction have a gravity angle A2, which is 10°~60°. In this embodiment, the gravity angle A2 is preferably 27°.

[0031] In some embodiments, the bottom wall 160 may also be constructed as a continuous arcuate structure, preferably with the arcuate structure protruding toward the sixth end to facilitate the deposition of developer toward the third end 13.

[0032] like Figure 5 As shown, ribs 162 are provided on the inner surface of the box body 10. The extending directions of the ribs 162 intersect the first direction and the second direction respectively. That is, while extending forward along the second direction, the ribs 162 also extend to the left or right along the first direction. Multiple ribs 162 are arranged at intervals in the first direction. The ribs 162 are used to strengthen the strength of the second box body 102 and prevent the second box body 102 from deforming during the injection molding process.

[0033] like Figure 8 As shown, a transmission assembly is provided at the first end 11. The transmission assembly includes a drive unit 40 rotatably mounted on the first end 11. The drive unit 40 rotates about a drive axis extending in a first direction. The drive unit 40 includes a coaxially integrally formed drive gear 402 and a power receiving unit 401. The drive gear 402 is closer to the first end 11 in the first direction than the power receiving unit 401. The power receiving unit 401 is used to connect to a power output shaft on the image forming apparatus to receive power output from the image forming apparatus.

[0034] The transmission assembly also includes a developing gear 41 and a powder feeding gear 42, both of which mesh with the drive gear 402 to receive power and rotate. The developing gear 41 is coaxially fixedly mounted on the end of the developing roller 131 near the first end 11 and drives the developing roller 131 to rotate. The powder feeding gear 42 is coaxially fixedly mounted on the end of the powder feeding roller 132 near the first end 11 and drives the powder feeding roller 132 to rotate. This embodiment does not limit the number of gears or their meshing relationship in the transmission assembly; it can be set according to actual needs.

[0035] like Figure 6 As shown, there is a first distance L1 between the rear wall 140 and the rotation axis of the drive unit 40 in the second direction. Since the height of the housing 10 in the third direction remains constant, the adjustment of the first distance L1 in the second direction will affect the inclination of the bottom wall 160, and thus affect the angle of gravity A2. When the rear wall 140 is adjusted forward in the second direction, the first distance L1 decreases, and the angle of gravity A2 increases relatively. In this way, the gravitational component force parallel to the bottom wall 160 on the developer accumulated on the bottom wall 160 will increase relatively, so the developer will more easily slide from back to front on the bottom wall 160 under the action of gravity and enter the developing chamber. When the rear wall 140 is adjusted backward, the first distance L1 increases, and the angle of gravity A2 decreases relatively. At this time, the volume of the receiving chamber will increase relatively, thereby accommodating more developer and reducing the frequency of developer replenishment. In this embodiment, the size of the first distance L1 is 30mm~60mm, and more specifically, the size of the first distance L1 is 40mm~55mm, preferably 44mm in this embodiment, to balance the volume of the receiving cavity and the delivery effect of the developer. It is known that a second distance L2 is provided between the developing axis and the rear wall 140 in the second direction, and the size of the second distance L2 is 50mm~65mm, preferably 58mm in this embodiment.

[0036] like Figure 5 and Figure 6As shown, further, a powder feeding roller receiving groove 1603 is provided on the side of the bottom wall 160 near the third end 13. While extending forward along the second direction, the side of the bottom wall 160 near the third end 13 also bends upward along the third direction to form the powder feeding roller receiving groove 1603. When the developer flows along the bottom wall 160 to the vicinity of the third end 13 under the action of gravity, it will be squeezed and accumulated inside the powder feeding roller receiving groove 1603. As the powder feeding roller 132 continues to rotate, the developer accumulated inside the powder feeding roller receiving groove 1603 can fully contact the powder feeding roller 132 and evenly adhere to the surface of the powder feeding roller 132. In one embodiment, the powder feeding roller receiving groove 1603 is arc-shaped, and the distance between the powder feeding roller receiving groove 1603 and the powder feeding roller is equidistant, allowing the powder feeding roller to more evenly absorb the developer.

[0037] like Figure 8 As shown, the first cover 111 is detachably fixedly mounted on the first end 11. The first cover 111 includes a first hole 1110 and a first pusher. The first hole 1110 is a through hole extending in a first direction. The power receiving part 401 is exposed through the first hole 1110 to receive external power.

[0038] like Figure 9 As shown, a support member 122 is provided at the second end 12, which rotatably supports the developing roller shaft 1312 and the powder feeding roller shaft 1322. In this embodiment, the support member 122 is made entirely of conductive material, preferably conductive resin. The support member 122 includes an electrical receiving part 1221 that receives external voltage. The support member 122 includes a first electrical transmission part that contacts the powder feeding roller shaft 1322 and is used to transmit voltage to the powder feeding roller 132. The support member 122 also includes a second electrical transmission part 1222 that contacts the powder dispensing blade 133 to transmit voltage. The second electrical transmission part 1222 is cantilevered to maintain stable contact with the powder dispensing blade 133. The powder dispensing blade 133 contacts the developing body 1311 to transmit voltage, meaning that the support member 122 is indirectly electrically connected to the developing body 1311. In this embodiment, the support member 122 can be considered as an electrode that receives external voltage. In some embodiments, the support member 122 is made of a non-conductive material, and the support member 122 and the electrode are separately combined.

[0039] like Figure 8As shown, the identification component is located at the first end 11. The identification component includes a bracket 1112 and a storage medium 1113. The bracket 1112 is provided with a first mounting groove 1114. The storage medium 1113 is installed in the first mounting groove 1114 by snap-fit. In some embodiments, the storage medium 1113 can also be installed on the bracket 1112 by adhesive or other means. The storage medium 1113 stores information about the developing cartridge 1. The storage medium 1113 includes an electrical contact surface 1115 electrically connected to it. The extension direction of the electrical contact surface 1115 is parallel to a second direction, and the normal direction of the electrical contact surface 1115 is parallel to a third direction. The storage medium 1113 and the electrical contact surface 1115 are preferably integrally formed, but in other embodiments, they can be separate components. When the developing cartridge 1 is installed in the image forming apparatus, the electrical contact surface 1115 contacts the electrical contact pin, so that the storage medium 1113 transmits information to the image forming apparatus, and the image forming apparatus identifies the developing cartridge 1. In the second direction, the distance between the rear wall 140 and the developing roller 131 is no greater than the distance between the electrical contact surface 1115 and the developing roller 131. In this embodiment, preferably, in the second direction, the rear wall 140 is closer to the developing roller 131 than the electrical contact surface 1115, and the rear wall 140 is located between the electrical contact surface 1115 and the drive unit 40. By adjusting the position of the rear wall 140 relative to the identification component, it is possible to achieve a miniaturized design of the developing cartridge 1.

[0040] The first cover 111 is also provided with a second mounting groove 1116, which is located near the rear end of the first cover 31 and has an opening in the third direction. The bracket 1112 is fixedly connected to the second mounting groove 1116 by a snap-fit ​​method, and in some embodiments, it can also be fixed by screws. In this embodiment, it is preferred that the bracket 1112 and the storage medium 1113 cannot move relative to the housing 10. In some embodiments, the storage medium 1113 or the electrical contact surface 1115 can move relative to the housing 10 in the third direction. Figure 2 , Figure 3 , Figure 9 , Figure 10 As shown, the push assembly is used to receive the force applied by the force-applying assembly to ensure that the developing roller 131 is in close contact with the photosensitive drum. In the second direction, the rear wall 140 of the cartridge 10 is closer to the drive axis than the push assembly. The push assembly includes a first push member and a second push member 1212, which abut against the first force-applying member 21 and the second force-applying member, respectively. The first push member is located at the first end position and protrudes rearward, and the second push member 1212 is located at the second end 12 and protrudes rearward. In this embodiment, the second push member 1212 is preferably integrally formed with the cartridge 10; in other embodiments, the second push member 1212 is integrally formed with the second cover 121.

[0041] The first pushing member includes a first force-bearing part 1117 and a second force-bearing part 1118. In this embodiment, the first force-bearing part 1117 and the second force-bearing part 1118 are preferably integrally formed with the first cover 111 to simplify the components and assembly of the developing cartridge 1. In other embodiments, they can be separate components. The extending directions of the first force-bearing part 1117 and the second force-bearing part 1118 intersect. The second force-bearing part 1118 extends backward in a second direction while extending upward in a third direction. A first angle A1 is formed between the extending direction of the second force-bearing part 1118 and the second direction. The size of the first angle A1 is 20°~60°. In this embodiment, the first angle A1 is preferably 35°. Further, the length of the second force-bearing part 1118 is 5mm~15mm. In this embodiment, it is preferably 8.5mm. The first cover 111 is also provided with a reinforcing rib 1119. The reinforcing rib 1119 is connected to the second force-bearing part 1118 to strengthen the second force-bearing part 1118 and prevent the second force-bearing part 1118 from breaking.

[0042] like Figure 3 As shown, the first force-receiving part 1117 contacts the first abutment surface 211 to receive a first force F1. The first force F1 causes the first force-receiving part 1117 to move forward in the second direction or has a tendency to move forward. The second force-receiving part 1118 contacts the second abutment surface 212 to receive a second force F2. The second force F2 causes the second force-receiving part 1118 to move forward in the second direction and upward in the third direction. The first force-receiving part 1117 and the second force-receiving part 1118 respectively transmit the first force F1 and the second force F2 to the housing 10, so that at least the first end 11 receives the first force F1 and the second force F2. That is, the second force-receiving part 1118 can be regarded as a lifting member that causes the housing 10 to move upward in the third direction.

[0043] When the developing cartridge 1 is mounted on the drum assembly 2, the developing cartridge 1 can move between a first position and a second position relative to the drum assembly 2. When the developing cartridge 1 is in the first position, the first force-bearing part 1117 and the second force-bearing part 1118 are in contact with the first abutment surface 211 and the second abutment surface 212, respectively. When the developing cartridge 1 is in the second position, only the second force-bearing part 1118 is in contact with the second abutment surface 212. When the developing cartridge 1 and the drum assembly 2 are located outside the image forming apparatus, the developing cartridge 1 is in the first position. When the developing cartridge 1 is in the first position, the developing roller 131 and the photosensitive drum are in contact with each other. During the process of the developing cartridge 1 and the drum assembly 2 being mounted together into the image forming apparatus, the developing cartridge 1 changes between the first position and the second position. When the developing cartridge 1 is in the second position, the developing roller 131 and the photosensitive drum are separated from each other.

[0044] During the process of mounting the developing cartridge 1 and the drum assembly 2 together generally along the second direction to the image forming apparatus, the protrusion on the guide rail is located on the mounting path of the developing cartridge 1 and the drum assembly 2 and interferes with the mounting of the developing cartridge 1 and the drum assembly 2. The protrusion abuts against the bracket 1112 or the storage medium 1113, thereby applying a downward abutting force in the third direction to the first end 11, causing the first end 11 to move downward in the third direction to avoid the protrusion on the guide rail. At this time, the second force-receiving part 1118 applies a reaction force to the second abutting surface 212. The direction of the reaction force is opposite to the direction of the second force F2. The reaction force has a backward component in the second direction, so that the first force-applying member 21 moves backward in the second direction, thereby making room for the first end 11 to move downward. The first force-receiving part 1117 disengages from the first abutting surface 211, the first elastic member 213 is further compressed, and the developing cartridge 1 is located in the second position.

[0045] As the developing cartridge 1 and drum assembly 2 continue to be installed, and the bracket 1112 or storage medium 1113 passes over the protrusion of the guide rail, the first end 11 loses its downward abutment force. The first elastic element 213 releases its elastic force, causing the first force-applying element 21 to move forward in the second direction. The first abutment surface 211 contacts the first force-receiving part 1117, and the second abutment surface 212 contacts the second force-receiving part 1118. The first force-applying element 21 simultaneously applies a first force F1 and a second force F2 to the first end 11, causing the first end 11 to move upward, and the developing cartridge 1 is positioned in the first position. When the developing cartridge 1 and drum assembly 2 are in place, the electrical contact surface 1115 contacts the electrical contact pin, and the developing cartridge 1 remains in the first position.

[0046] like Figure 10 As shown, the developing cartridge 1 also includes a locking member 11190, which is disposed on the cover 111 and protrudes rearward. When the developing cartridge 1 is mounted on the drum assembly 2, the locking member 11190 is locked by a component on the drum assembly 2 to prevent the developing cartridge 1 from disengaging. In the second direction, the locking member 11190 is further away from the developing roller 131 than the rear wall 140.

[0047] In one embodiment, the storage medium 1113 is disposed at the sixth end 16 and close to the third end 13 in the second direction, the electrical contact surface 1115 faces downward, and a detection element is disposed at the second end 12. The detection element interacts with the detection element in the image forming apparatus so that the image forming apparatus can identify the model and lifespan of the developing cartridge 1.

[0048] like Figure 11 and Figure 12As shown, in one embodiment, the developing cartridge 1 adopts a handle-less structure. An insertion portion 1021 is provided on the first cartridge body 101. The insertion portion 1021 is groove-shaped and allows the user to insert it. The first cartridge body 101 also has an anti-slip portion, which is combined with the insertion portion 1021 for easy picking. The anti-slip portion includes a first anti-slip texture 1010 and a second anti-slip texture 1020. The first anti-slip texture 1010 is provided on the first cartridge body 101, and the second anti-slip texture 1020 is provided on the second cartridge body 102. Both the first and second anti-slip textures 1010 and 1020 are provided in multiple rib-like forms extending in a first direction. The anti-slip portion allows the user to pick up the developing cartridge 1 more stably.

[0049] Example 2: Based on Embodiment 1, this embodiment further provides another developing cartridge 1. The parts of the developing cartridge 1 that are identical to those in Embodiment 1 will not be described again. The difference from Embodiment 1 is that, as shown in... Figure 13As shown, in this embodiment, the bottom wall 160 includes a first bottom wall 1601 and a second bottom wall 1602 that are inclined to each other. Both the first bottom wall 1601 and the second bottom wall 1602 are constructed as continuous planes. The rear end of the first bottom wall 1601 is connected to the bottom edge of the rear wall 140, and the front end of the first bottom wall 1601 is connected to the rear end of the second bottom wall 1602. The front end of the second bottom wall 1602 extends to the third end 13. The first bottom wall 1601 and the second bottom wall 1602 have different inclination angles, that is, the gravity angle includes a first gravity angle A3 and a second gravity angle A4. A first gravitational angle A3 is formed between the first bottom wall 1601 and the second direction, and a second gravitational angle A4 is formed between the second bottom wall 1602 and the second direction. The value of the first gravitational angle A3 is greater than the value of the second gravitational angle A4. In this embodiment, the angle value of the first gravitational angle A3 is between 20° and 70°, and preferably 46°. The angle value of the second gravitational angle A4 is between 20° and 70°, and preferably 35°. Specifically, in order to promote the flow of the developer along the bottom wall 160 towards the third end 13 under the action of gravity, the bottom wall 160 is divided into two sections. The second gravitational angle A4 of the second bottom wall 1602, which is closer to the third end 13, is smaller, and the second bottom wall 1602 is closer to a horizontal state, which can increase the internal volume of the cartridge 10. The first gravity angle A3 of the first bottom wall 1601 near the fourth end 14 is relatively large, and its inclination is also relatively large. This increases the effect of gravity on the developer, making it easier for the developer to flow towards the third end 13. At the same time, the two-section bottom wall also avoids the excessive inclination angle from affecting the size of the first distance L1. After the developing cartridge 1 is installed in the image forming apparatus, the developer in the cartridge 10 flows along the extension direction of the bottom wall under the influence of gravity, that is, towards the developing roller 131 and the powder feeding roller 132. This structure ensures that the developing roller 131 and the powder feeding roller 132 can stably adsorb the developer even without any moving parts such as stirring components inside the cartridge 10 that can act on the developer relative to the cartridge 10. In other embodiments, the bottom wall 160 can also be a three-section continuous plane or a more segmented structure.

[0050] In this embodiment, the plane containing the rear wall 140 has a rear wall angle A5 with the third direction. In order to keep the rear wall 140 as close to vertical as possible, to prevent the developer from adhering to the rear wall 140, and to promote the smooth flow of the developer inside the cavity to the vicinity of the third end, in some embodiments, the value range of the rear wall angle A5 relative to the vertical direction is -30° to 30°.

[0051] like Figure 14As shown, the developing cartridge 1 also includes a powder filling port 112, which is a through hole through which developer is poured into the cartridge body 10. A sealing cap is provided to match the powder filling port 112 to seal the powder filling port 112 and prevent developer leakage. In this embodiment, the powder filling port 112 is preferably located at the first end 11, and the powder filling port 112 does not overlap with the first protective cover 111 in the first direction. In another embodiment, it can also be located at the second end 12.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A developing cartridge, comprising: The container is used to store the developer; The box body has a first end and a second end that are arranged opposite to each other in a first direction, a third end and a fourth end that are arranged opposite to each other in a second direction, and a fifth end and a sixth end that are arranged opposite to each other in a third direction. The first direction, the second direction and the third direction intersect each other. The developing roller rotates about a developing axis extending in a first direction and is located at the third end; The drive unit rotates about a drive axis extending in a first direction and is located at the first end; Storage medium, including electrical contact surfaces electrically connected thereto; The feature is that the sixth end is provided with a bottom wall, the extension direction of the bottom wall is inclined relative to the second direction and the third direction, and the bottom wall extends towards the third end in the second direction while extending upward towards the sixth end in the third direction.

2. The process cartridge according to claim 1, wherein The box body is provided with anti-slip texture, which consists of multiple ribs extending in a first direction.

3. The process cartridge of claim 1, wherein The bottom wall includes a first bottom wall and a second bottom wall that are continuously arranged, wherein the extension direction of the first bottom wall is inclined relative to the extension direction of the second bottom wall.

4. The process cartridge according to claim 3, wherein The first bottom wall and the second direction have a first gravitational angle, and the second bottom wall and the second direction have a second gravitational angle, wherein the first gravitational angle is greater than the second gravitational angle.

5. The process cartridge according to claim 4, wherein The range of the first gravity angle and the second gravity angle is 20° to 70°.

6. The process cartridge of claim 1, wherein The housing includes a rear wall disposed at the fourth end. In the second direction, the distance between the rear wall and the developing roller is not greater than the distance between the electrical contact surface and the developing roller. The electrical contact surface extends in the second direction.

7. The process cartridge according to claim 6, wherein In the second direction, there is a first distance between the rear wall and the drive axis, the first distance being 30mm to 60mm.

8. The process cartridge according to claim 6, wherein In the second direction, there is a second distance between the rear wall and the developing axis, the second distance being 50mm to 65mm.

9. The process cartridge according to claim 6, wherein, The rear wall extends in a direction that forms an angle with the third direction, the angle being no greater than 30°, and the electrical contact surface faces the third direction.

10. The process cartridge according to claim 6, wherein It also includes a lifting member, which, when abutted, causes the electrical contact surface to move upward along with the housing in the third direction.

11. The process cartridge according to claim 6, wherein It also includes a locking element, which, in the second direction, is further away from the developing roller than the rear wall.

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