A waste powder bin, waste powder conveying shaft and a selenium drum

Abstract

The application provides a waste powder bin, a waste powder conveying shaft and a selenium drum. The waste powder bin comprises a waste powder container, a separation structure is arranged in the waste powder container, the separation structure separates the waste powder container into a first waste powder container cavity and a second waste powder container cavity, a waste powder channel is arranged on the separation structure and communicates the first waste powder container cavity and the second waste powder container cavity, the second waste powder container cavity is higher than the first waste powder container cavity in the direction of gravity, a waste powder conveying shaft is arranged in the first waste powder container cavity, the waste powder conveying shaft is connected with a transmission part arranged outside the waste powder container, and a waste powder driving structure which can drive waste powder to the waste powder channel is arranged on the waste powder conveying shaft. The technical scheme of the application can be widely applied in the technical field of large-capacity selenium drums.

Description

Technical Field

[0001] This invention relates to the technical field of toner cartridges for imaging printing, and in particular to the technical field of waste toner collection in toner cartridges. Background Technology

[0002] Laser printers require toner as a developer to function. During printing, toner needs to be transported from the toner storage container to the core component of the drum unit. The drum unit typically has an integrated toner storage container—the toner cartridge—which holds the toner needed for printing. However, the toner cartridge has limited capacity, while the core component of the drum unit has a long lifespan. Even after the toner in the cartridge is depleted, the core component of the drum unit is still usable.

[0003] To avoid wasting the value of the core components of the toner cartridge, a toner replenishment technology was designed. This means that after the toner in the cartridge's own toner compartment is depleted, a toner replenishment device can be used to add toner, allowing the cartridge to continue to be used and fully utilizing the value of the core components.

[0004] However, toner refill technology has also brought new problems. Each print job generates a small amount of waste toner. This waste toner, the remaining portion of the imaging toner, is generally unusable and is usually scraped into the waste toner hopper by the toner scraper on the drum. Because the original toner hopper has a limited capacity, the waste toner hopper, designed to be proportionally sized to the toner hopper's volume, also has a limited capacity. Furthermore, the increased waste toner generated during refills can lead to leakage due to the limited capacity of the waste toner hopper, causing environmental pollution.

[0005] The aforementioned waste toner leakage problem has been addressed by increasing the volume of the waste toner compartment, as exemplified by Chinese utility model patent number 202221536066.9 (titled "A Laser Printing Toner Cartridge"). This patent achieves the goal of accommodating a larger amount of waste toner by setting up a waste toner expansion compartment connected to the waste toner compartment. However, solutions similar to this patent all utilize gravity to drive the waste toner to flow into the waste toner expansion compartment, which means the waste toner expansion compartment can only be located below or diagonally below the waste toner compartment along the direction of gravity. In practice, the waste toner compartment is located near the core components of the toner cartridge, and the space below and diagonally below it is extremely limited. In fact, many types of toner cartridges cannot provide additional space in these two directions for setting up a waste toner expansion compartment, thus making the aforementioned waste toner expansion compartment solution unsuitable. Summary of the Invention

[0006] To address the issue of waste toner leakage caused by toner replenishment technology more broadly, this invention provides a waste toner bin, a waste toner conveying shaft, and a toner drum equipped with the waste toner bin and / or the waste toner conveying shaft.

[0007] The technical solution of the present invention is as follows:

[0008] A waste powder silo includes a waste powder container with a partition structure inside, dividing the waste powder container into a first waste powder cavity and a second waste powder cavity. A waste powder channel connecting the first and second waste powder cavities is provided on the partition structure. The second waste powder cavity is higher than the first waste powder cavity in the direction of gravity. A waste powder conveying shaft is provided in the first waste powder cavity and connected to a transmission component located outside the waste powder container. A waste powder driving structure is provided on the waste powder conveying shaft to drive waste powder to the waste powder channel.

[0009] Optionally, the partition structure includes a plurality of partition entities; the waste powder channel is located between adjacent partition entities.

[0010] Optionally, the surface of the separating entity facing the second waste powder cavity is provided with a groove-shaped structure.

[0011] Optionally, the sidewall of the trough structure adjacent to the waste powder channel includes an inclined sidewall; the height of a point on the inclined sidewall in the direction of gravity decreases as the distance from the centerline of the adjacent waste powder channel increases.

[0012] Optionally, the width of the waste powder channel gradually decreases from the first waste powder cavity to the second waste powder cavity.

[0013] Optionally, the transmission component includes a transmission gear.

[0014] Optionally, a waste powder inlet is provided in the first waste powder cavity; a waste powder inlet assembly is provided at the waste powder inlet; the waste powder inlet assembly includes: an elastic cleaning scraper disposed above in the direction of gravity, a waste powder receiving body disposed below the elastic cleaning scraper, and an elastic sealing sheet disposed below the waste powder receiving body; at least a portion of the elastic cleaning scraper presses against the photosensitive drum; at least a portion of the elastic sealing sheet presses against the photosensitive drum; the waste powder inlet is located between the elastic cleaning scraper and the waste powder receiving body.

[0015] Optionally, the portion of the elastic sealing sheet that presses against the photosensitive drum is disposed between the waste powder receiver and the photosensitive drum.

[0016] Optionally, a waste powder receiving body support structure is provided at the bottom of the first waste powder cavity to support the waste powder receiving body.

[0017] Optionally, the waste powder receiving body support structure includes a first support profile and a second support profile; the area of ​​the first support profile in contact with the waste powder receiving body is greater than the area of ​​the second support profile in contact with the waste powder receiving body; the first support profile is disposed at both ends of the waste powder receiving body adjacent to the photosensitive drum.

[0018] As described above, the waste powder conveying shaft includes a transverse waste powder driving structure arranged around the waste powder driving shaft and an upward waste powder driving structure arranged at the waste powder channel on the waste powder conveying shaft.

[0019] Optionally, the upward-driving waste powder structure includes two protrusions, a first protrusion and a second protrusion, disposed on the waste powder conveying shaft; the first protrusion and the second protrusion are intersecting.

[0020] Optionally, the side where the first and second protruding ridges intersect at an angle of less than 180° is positioned in the direction of rotation of the waste powder conveying shaft.

[0021] The toner cartridge is provided with a waste toner bin as described above and / or a waste toner conveyor shaft as described above.

[0022] The technical effects of this invention are as follows:

[0023] The waste toner container of this invention is divided into two parts by a partition structure: a first waste toner chamber and a second waste toner chamber. In the direction of gravity, the second waste toner chamber is higher than the first waste toner chamber, that is, the second waste toner chamber is positioned above or diagonally above the first waste toner chamber in the direction of gravity. By providing a waste toner channel on the partition structure and a waste toner conveying shaft (including a waste toner drive structure on the waste toner conveying shaft) in the first waste toner chamber, the waste toner in the first waste toner chamber can be driven through the waste toner channel into the second waste toner chamber for storage. The technical solution of this invention allows for the provision of a waste toner expansion chamber above or diagonally above the waste toner chamber in the direction of gravity to increase the waste toner volume. For many types of toner cartridges, the space above or diagonally above the waste toner chamber has considerable expansion space. Therefore, the technical solution of this invention can solve the problem of waste toner leakage caused by toner replenishment technology on a larger scale, thus achieving the objective of this invention.

[0024] The further effects of the above-mentioned alternative methods will be explained in detail below with reference to specific implementation methods. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of an embodiment of the toner cartridge of the present invention.

[0026] Figure 2 for Figure 1The illustrated embodiment shows a perspective view of the waste powder hopper with one side cover removed.

[0027] Figure 3 for Figure 1 A partially enlarged perspective view of the embodiment shown.

[0028] Figure 4 for Figure 2 The diagram shows a three-dimensional view of the structure after the waste powder conveyor shaft has been removed.

[0029] Figure 5 for Figure 1 A perspective view of the waste powder conveyor shaft in the illustrated embodiment.

[0030] Figure 6 for Figure 5 The image shows a partially enlarged 3D view of the waste powder conveyor shaft.

[0031] Figure 7 for Figure 5 The image shown is a three-dimensional view of the waste powder conveyor shaft after it has been cut off.

[0032] Figure 8 for Figure 5 The image shows a magnified two-dimensional view of the waste powder conveyor shaft from a second angle.

[0033] Figure 9 for Figure 1 A partially enlarged perspective view of the measuring end of the embodiment shown.

[0034] Figure 10 This is a partial view of a second embodiment of the waste powder conveyor shaft.

[0035] The markings in the image are explained as follows:

[0036] 101. Second waste powder cavity; 102. Separation structure; 1021. Separation entity; 1022. Separation entity; 103. First waste powder cavity; 104. Waste powder conveying shaft; 105. Elastic cleaning scraper; 106. Waste powder receiving body support structure; 107. Waste powder receiving body; 108. Elastic sealing sheet; 109. Photosensitive drum;

[0037] 201. Waste Powder Channel;

[0038] 401. Supporting profile; 402. Supporting profile;

[0039] 501, Spiral fin; 502, Upward-driving waste powder structure; 5201, First protruding ridge; 5202, Second protruding ridge; 503, Spiral fin;

[0040] 701. Upward-driving waste powder structure; 702. Upward-driving waste powder structure;

[0041] 901. Gear; 902. Gear;

[0042] 1001, Elastic fin; 1002, Side edge of elastic fin; 1003, Upper edge of elastic fin; 1004, Through hole. Detailed Implementation

[0043] The technical solution of the present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

[0044] like Figure 1 and Figure 3 As shown, the waste toner container of the present invention includes a waste toner container. The waste toner container is a container for holding waste toner generated during the imaging and printing process. A partition structure 102 is provided in the waste toner container. The partition structure 102 divides the waste toner container into a first waste toner cavity 103 and a second waste toner cavity 101. When the drum containing the waste toner container is in the working position, in the direction of gravity ( Figure 1 (Up and down direction), the second waste powder cavity 101 is located above the first waste powder cavity 103, that is, the second waste powder cavity 101 is higher than the first waste powder cavity 103. A waste powder channel 203 is provided on the partition structure 102 (see reference). Figure 2 The waste powder channel 203 connects the first waste powder cavity 103 and the second waste powder cavity 101. Figure 1 In the illustrated embodiment, the second waste toner cavity 101 is located directly above the first waste toner cavity 103. In other embodiments, the second waste toner cavity may also be located diagonally above the first waste toner cavity. The second waste toner cavity 101 can also be considered as an extension chamber of the first waste toner cavity 103. Using the technical solution of this invention, a waste toner extension chamber can be set above and diagonally above the first waste toner cavity 103 in the direction of gravity, making the arrangement of the waste toner extension chamber more flexible and enabling more types of toner cartridges to implement the technical solution of a waste toner cavity plus a waste toner extension chamber.

[0045] Figure 2 The internal structure of the waste powder container is shown. For example... Figure 2 and Figure 4 As shown, the partition structure 102 is composed of several partition entities. Figure 2 The example only shows two adjacent separating entities (separator 1021 and separator 1022). Figure 2 As shown, the space between partition entities 1021 and 1022 is the waste powder channel 201. The partition entities, identical to partition entities 1021 and 1022, constituting the partition structure 102, have a groove-shaped structure on their surfaces facing the second waste powder cavity 101. This groove-shaped structure, combined with the front and rear baffles (i.e., the front and rear inner walls of the waste powder container), forms a space for accommodating waste powder. The sidewall of this groove-shaped structure adjacent to the waste powder channel is an inclined sidewall, and the height of a point on this inclined sidewall in the direction of gravity decreases as the distance from the centerline of the adjacent waste powder channel increases. Figure 2 As shown, the width of the waste powder channel 201 (i.e., the distance between the outer sides of adjacent partition entities 1021 and 1022) gradually decreases from the first waste powder cavity to the second waste powder cavity, that is, the width of the waste powder channel 201 gradually decreases from bottom to top, which can guide the flow of waste powder.

[0046] like Figure 1 and Figure 3 As shown, a waste toner inlet is provided at the first waste toner cavity 103. A waste toner inlet assembly is provided at the waste toner inlet. The waste toner inlet assembly includes an elastic cleaning scraper 105, a waste toner receiving body 107, and an elastic sealing plate 108 arranged from top to bottom in the direction of gravity. The space between the elastic cleaning scraper 105 and the elastic sealing plate 108 is the waste toner inlet. One side of the elastic cleaning scraper 105 is fixed to the wall of the waste toner hopper, and the other side springs (or touches) against the photosensitive drum 109; one side of the elastic sealing plate 108 is fixed to the wall of the waste toner hopper, and the other side springs (or touches) against the photosensitive drum 109. The length of the portion of the elastic cleaning scraper 105 and the elastic sealing plate 108 that touches the photosensitive drum 109 is consistent with the length of the photosensitive drum 109 in the direction of rotation. The length of the waste toner receiving body 107 along the direction of rotation of the photosensitive drum 109 is also consistent with the length of the photosensitive drum 109 in the direction of rotation. The waste powder receiver 107 is a strip made of flexible material; in this embodiment, the material of the waste powder receiver 107 is sponge. The waste powder receiver 107 presses against the elastic sealing sheet 108. The portion of the elastic sealing sheet 108 that presses against the photosensitive drum 109 is located between the waste powder receiver 107 and the photosensitive drum 109.

[0047] like Figure 3 and Figure 4 As shown, a waste powder receiving body support structure 106 is fixedly installed at the bottom (i.e., the bottom in the direction of gravity) of the first waste powder cavity 103. The waste powder receiving body support structure 106 is used to support the waste powder receiving body 107 and prevent the waste powder receiving body 107 from bending into the first waste powder cavity 103. The waste powder receiving body support structure 106 includes several support profiles. The support profiles include two types, and the main difference between the two types of support profiles is the difference in cross-section. That is, the cross-section of the support profile 401 in the plane direction parallel to the rotation axis of the photosensitive drum 109 is T-shaped; and the cross-section of the support profile 402 in the plane direction parallel to the rotation axis of the photosensitive drum 109 is rectangular. The overall shape of the support profile 401 is similar to a T-shaped steel, with the T-shaped cross-section facing and contacting the waste powder receiving body 107; the support profile 402 is a cuboid block, with the rectangular cross-section facing and contacting the waste powder receiving body 107. Support profiles 402 are positioned at corresponding positions at both ends of the photosensitive drum 109 in the direction of rotation axis, and several support profiles 401 are positioned between the support profiles 402 at both ends.

[0048] like Figure 1 and Figure 3 As shown, a waste powder conveying shaft 104 is provided in the first waste powder cavity 103. Figure 2 As shown, the length of the waste toner conveying shaft 104 is basically the same as the length of the photosensitive drum 109, and the axis of rotation of the waste toner conveying shaft 104 is parallel to the axis of rotation of the photosensitive drum 109. Figures 5 to 8 The specific structure of the waste powder conveyor shaft 104 is shown. For example... Figure 5 As shown, a waste powder driving structure is provided on the outer surface of the waste powder conveying shaft 104. The waste powder driving structure is further divided into a transverse driving waste powder structure and an upward driving waste powder structure 502. The transverse driving waste powder structure includes a spiral fin 501 and a spiral fin 503. The spiral direction of the spiral fin 501 is opposite to that of the spiral fin 503. The upward driving waste powder structure 502 is located corresponding to the waste powder channel 201 (see reference). Figure 2 The spiral fins 501, the upward-driving waste powder structure 502, and the spiral fins 502 are sequentially arranged along the axis (rotation axis) of the waste powder drive shaft 104 to form a waste powder drive unit. The waste powder drive unit is periodically arranged along the axis (rotation axis) of the waste powder drive shaft 104.

[0049] like Figures 5 to 8 As shown, the upward-driving waste powder structure 502 includes a first protruding ridge 5201 and a second protruding ridge 5202 protruding from the surface of the waste powder conveying shaft 104. The first protruding ridge 5201 and the second protruding ridge 5202 intersect, forming an angle of less than 180°. This allows the first protruding ridge 5201 and the second protruding ridge 5202 to form an area that can accommodate waste powder.

[0050] Figure 7 and Figure 8 The structure of the upward-driven waste powder structure 502 is further illustrated by demonstrating the states of the waste powder conveying shaft 104 at different rotation angles. The upward-driven waste powder structure 502 includes a waste powder-accommodating area formed by two protruding ridges as shown previously, and the angle less than 180° formed by the intersection of the two sets of protruding ridges all points in the same direction (i.e., the rotation direction of the waste powder conveying shaft 104). Figure 6 (The direction pointed to by the curved arrow).

[0051] Figure 9 The external structure of the waste powder hopper is shown. The end of the waste powder conveying shaft 104 extends out of the waste powder container, and a gear 902 is fixedly mounted at this end. The shaft of gear 902 is coaxially arranged with the shaft of the waste powder conveying shaft 104. Gear 902 meshes with a transmission gear, which in turn establishes a gear transmission relationship with gear 901 located at the end of the photosensitive drum 109 through a gear transmission system.

[0052] In addition to Figures 5 to 8The example shown is of a waste powder conveyor shaft, but there are other implementations of waste powder conveyor shafts. For example, one implementation uses elastic fins as the waste powder drive structure. Figure 10 This illustrates an example in which the elastic fins of this embodiment are fixed to the waste powder conveyor shaft. Figure 10 This example shows a waste powder drive unit. The waste powder drive units are arranged periodically along the axis (rotation shaft) of the waste powder drive shaft, with each waste powder drive unit corresponding to a waste powder channel, and the central elastic fin 1001 aligned with the waste powder channel. Figure 10 In the example shown, the upper edge of the middle elastic fin 1001 is a straight edge parallel to the axis of the waste powder drive shaft. The angle between the extension line of the side edge (i.e., the edge adjacent to other elastic fins) and the axis of the waste powder drive shaft is not equal to 90°. That is, the side edge of the elastic fin 1001 is inclined relative to the axis of the waste powder drive shaft. The left and right side edges of the elastic fin 1001 are symmetrically arranged in a figure-eight shape. Other elastic fins, such as the side edges of the elastic fins adjacent to the elastic fin 1001 (elastic fin side edge 1002), are also inclined relative to the axis of the waste powder drive shaft, except that the two side edges of the same elastic fin are parallel; the upper edges of other elastic fins are also inclined relative to the axis of the waste powder drive shaft. Through holes (e.g., through hole 1004) are provided on the elastic fins. The aforementioned arrangement of the elastic fins ensures that the bending trajectory formed by the other elastic fins (excluding elastic fin 1001) when they touch the inner wall of the first waste powder cavity is a straight line that is not parallel to the axis of the waste powder drive shaft. This bending trajectory can sequentially push the waste powder towards the elastic fin 1001. Since the upper edge of the elastic fin 1001 is a straight edge, the bending marks of the elastic fin 1001 will not push the waste powder to the sides, but will push the waste powder upwards (i.e., in the direction of the waste powder channel). Ultimately, this results in the elastic fins on both sides of the waste powder drive unit continuously pushing waste powder towards the elastic fin 1001 in the middle, while the elastic fin 1001 pushes the waste powder towards the waste powder channel.

[0053] The following description of the working process of the embodiments shown in the accompanying drawings further illustrates the technical solution of the present invention.

[0054] When the photosensitive drum 109 starts to rotate, that is, when the photosensitive drum 109 starts to work, waste powder is generated on the surface of the photosensitive drum 109. When the photosensitive drum 109 starts to rotate, it drives the gear 902 to rotate through gear transmission, thereby driving the waste powder conveying shaft 104 to rotate.

[0055] Waste powder on the surface of the photosensitive drum 109 is first scraped off by the elastic cleaning scraper 105 onto the waste powder receiver 107. The elastic sealing sheet 108, pressed against the photosensitive drum 109, acts as a seal, preventing waste powder from leaking out of the waste powder container. However, the elastic sealing sheet 108 has limited supporting force; when the waste powder scraped off by the elastic cleaning scraper 105 accumulates to a certain amount, the elastic sealing sheet 108 is prone to deformation under the weight of the waste powder, resulting in a poor seal and leakage. The waste powder receiver 107, on the other hand, has considerable strength. Furthermore, when the scraped-off waste powder accumulates to a certain amount, it automatically flows into the first waste powder cavity 103. Therefore, the strength of the waste powder receiver 107 is sufficient to bear the weight of the accumulated waste powder, preventing leakage. The waste powder receiver 107 pressing against the elastic sealing sheet 108 further enhances the sealing performance.

[0056] Support profiles 401 and 402 provide support to the waste powder receiving body 107, preventing it from shifting position due to force interference. Support profile 401 has a T-shaped profile, with its T-shaped cross-section supporting the waste powder receiving body 107. This shape of support profile 401 allows it to occupy less volume in the first waste powder cavity 103, thus accommodating more waste powder.

[0057] The support profile 402 is positioned at both ends of the waste powder receiving body 107. Because this part of the waste powder receiving body 107 is a free end, it is more prone to swaying than the middle part. However, the rectangular cross-section of the support profile 402 has a larger contact area than the T-shaped cross-section, thus preventing swaying at the ends of the waste powder receiving body 107.

[0058] In other embodiments, the cross-section of the support profile 401 (the surface in contact with the waste powder receiving body 107) can be other linear shapes, and the cross-section of the support profile 402 (the surface in contact with the waste powder receiving body 107) can also be other shaped surfaces. As long as the area of ​​the cross-section of the support profile 402 is larger than the area of ​​the cross-section of the support profile 401, the purpose of the support profile occupying less of the volume of the first waste powder cavity can be achieved, while being able to strongly support both ends of the waste powder receiving body.

[0059] When the waste powder conveying shaft 104 rotates, the spiral fins 501 and 502 drive the waste powder in the first waste powder cavity 103 to move upward towards the waste powder driving structure 502 (i.e., the waste powder channel 201 of the partition structure 102) in opposite directions. In other embodiments, the upward driving waste powder structure can also adopt other structural forms such as rectangular fins. In some embodiments, the upward driving waste powder structure can also be a structureless form (i.e., without a structure that affects the flow of waste powder), as long as it can prevent the waste powder from moving laterally (i.e., moving in the opposite direction to the driving force of the spiral fins 501 and 502). When the waste powder accumulates to a certain amount, combined with the squeezing force of the driving force of the spiral fins 501 and 502, the waste powder can move through the waste powder channel 201 to the second waste powder cavity.

[0060] In this embodiment, the first protruding ridge 5201 and the second protruding ridge 5202 intersect, forming an angle of less than 180°, constituting an area that can accommodate waste powder. Since the amount of waste powder generated is relatively small, if the waste powder is in a dispersed state, under the same upward driving force, its momentum is small and it will be disturbed by various external forces, making it difficult to effectively enter the second waste powder cavity. In this embodiment, the first protruding ridge 5201 and the second protruding ridge 5202, which rotate with the waste powder conveying shaft 104, can concentrate a smaller amount of waste powder into the waste powder accommodating area formed by the two ridges. Through rotational inertia, the concentrated waste powder is conveyed onto the waste powder channel 201. Under the same rotational force, the concentrated waste powder has greater momentum than dispersed waste powder, making it easier to form a waste powder fluid with a defined flow direction, and thus more effectively enter the second waste powder cavity. Therefore, the upward-driven waste powder structure 502 of this embodiment can effectively and promptly convey a smaller amount of waste powder, and also avoids the problem of more waste powder accumulating.

[0061] Waste powder enters the space of the second waste powder cavity 101 through the waste powder channel 201. The waste powder can slide along the inclined side wall of the partition body 1021 toward the middle of the groove structure of the partition body 1021, which can prevent the waste powder from accumulating near the waste powder channel 201 of the groove structure and make more efficient use of the volume of the groove structure.

[0062] It is worth noting that the above description is only a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. The present invention can also be replaced by equivalent technologies. Therefore, all equivalent changes made based on the description and figures of the present invention, or direct or indirect applications to other related technical fields, are included within the scope of the present invention.

Claims

1. A waste bin comprising a waste powder container, characterised in that: A partition structure is arranged in the waste powder container, which divides the waste powder container into a first waste powder container cavity and a second waste powder container cavity, and a waste powder passage is arranged on the partition structure to communicate the first waste powder container cavity and the second waste powder container cavity; the second waste powder container cavity is higher than the first waste powder container cavity in the direction of gravity; a waste powder transmission shaft is arranged in the first waste powder container cavity, and the waste powder transmission shaft is connected with a transmission member arranged outside the waste powder container; a waste powder driving structure is arranged on the waste powder transmission shaft to drive waste powder to the waste powder passage; The partition structure comprises a plurality of partition entities; the waste powder passage is arranged between adjacent partition entities; A groove-shaped structure is arranged on the surface of the partition entity facing the second waste powder container cavity; the groove-shaped structure and the front and rear inner walls of the waste powder container combine to form a space for accommodating waste powder.

2. The waste hopper of claim 1, wherein: The side wall of the groove-shaped structure adjacent to the waste powder passage comprises an inclined side wall; the height of a point on the inclined side wall in the direction of gravity decreases as the distance from the center line of the adjacent waste powder passage increases.

3. The waste hopper of claim 1, wherein: The width of the waste powder passage gradually decreases from the first waste powder container cavity to the second waste powder container cavity.

4. The spent powder bin of claim 1, wherein: The transmission member comprises a transmission gear.

5. The spent powder bin of claim 1, wherein: A waste powder inlet is arranged in the first waste powder container cavity; a waste powder inlet assembly is arranged at the waste powder inlet; the waste powder inlet assembly comprises: an elastic cleaning scraper arranged above in the direction of gravity, a waste powder receiving body arranged below the elastic cleaning scraper, and an elastic sealing sheet arranged below the waste powder receiving body; at least a part of the elastic cleaning scraper is elastically pressed against the photosensitive drum; at least a part of the elastic sealing sheet is elastically pressed against the photosensitive drum; the waste powder inlet is between the elastic cleaning scraper and the waste powder receiving body.

6. The spent powder bin of claim 5, wherein: The part of the elastic sealing sheet elastically pressed against the photosensitive drum is arranged between the waste powder receiving body and the photosensitive drum.

7. The spent powder bin of claim 5, wherein: A waste powder receiving body support structure is arranged at the bottom of the first waste powder container cavity to support the waste powder receiving body.

8. The spent powder bin of claim 7, wherein: The waste powder receiving body support structure comprises a first support profile and a second support profile; the area of the part of the first support profile in contact with the waste powder receiving body is greater than the area of the part of the second support profile in contact with the waste powder receiving body; the first support profile is arranged at the positions of the two ends of the waste powder receiving body adjacent to the photosensitive drum.

9. The waste hopper of claim 1, wherein: The waste powder driving structure comprises a transverse waste powder driving structure arranged around the waste powder driving shaft; and an upward waste powder driving structure arranged at the waste powder transmission shaft corresponding to the waste powder passage.

10. The spent powder bin of claim 9, wherein: The upward waste powder driving structure comprises two first protruding ribs and second protruding ribs arranged on the waste powder transmission shaft; the first protruding ribs and the second protruding ribs are arranged intersecting each other.

11. The spent powder bin of claim 10, wherein: The side of the intersection of the first protruding ribs and the second protruding ribs, which is less than 180°, is arranged in the direction of rotation of the waste powder transmission shaft.

12. A toner cartridge, characterized by: A waste powder container as claimed in any one of claims 1 to 11 is arranged.

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