A developing box

Abstract

A developing box provided by the present invention comprises a developing assembly and a powder storage assembly, wherein the developing assembly and the powder storage assembly are detachably connected, the developing assembly comprises a first powder bin, a first waste powder bin and a developing unit, the first powder bin is used to supply carbon powder to the developing unit, the first waste powder bin is used to receive waste carbon powder output by the developing unit, the powder storage assembly comprises a shell, a second powder bin and a second waste powder bin are provided in the shell, the second powder bin is connected to the first powder bin, and the second waste powder bin is connected to the first waste powder bin, thereby increasing the powder storage space of the powder box and improving the powder storage capacity of the developing box.

Description

Technical Field

[0001] The invention relates to the technical field of electronic imaging, and in particular to a developing box. Background Art

[0002] As a detachable and replaceable office consumable, developer cartridges are widely used in imaging developing devices such as printers or copiers. Developers such as toner are generally stored in the developer cartridges. The developer in the developer cartridges is transferred to paper through cooperation with the developing device, thereby realizing the printing function of the developing device.

[0003] In the prior art, a developing box generally includes a powder bin, a waste powder bin and a developing unit. The powder bin and the waste powder bin are arranged on different sides of the developing unit. The powder bin is used to store a developer such as toner. The developer is supplied to the developing unit through a supply mechanism in the powder bin. The developing unit uses the developer to form an image, and the waste powder after the image is formed is stored in the waste powder bin. At present, the structural design of the developing box is generally compact and complex. The powder bin and the waste powder bin are arranged adjacent to the developing unit, and the shapes of the powder bin and the waste powder bin are adapted to the shape of the developing unit.

[0004] However, the current developer cartridge has a relatively compact structure, resulting in a smaller powder storage space in the powder cartridge, which directly affects the powder storage capacity of the developer cartridge. The lower powder storage capacity will result in a shorter service life of the developer cartridge, requiring frequent replacement and causing waste. Summary of the invention

[0005] The present invention provides a developing box, which increases the powder storage space of the powder box and improves the powder storage capacity of the developing box.

[0006] The developing box provided by the present invention comprises: a developing component and a powder storage component, and the developing component and the powder storage component are detachably connected.

[0007] Among them, the developing component includes a first powder bin, a first waste powder bin and a developing unit, the first powder bin is used to supply toner to the developing unit, and the first waste powder bin is used to receive the waste toner output by the developing unit; the powder storage component includes a shell, and the shell has a second powder bin and a second waste powder bin; the second powder bin is connected to the first powder bin, and the second waste powder bin is connected to the first waste powder bin.

[0008] As an optional embodiment, the developing box provided by the present invention has a shell including a first shell, a second shell and a third shell, the first shell is connected to the outside of the second shell, the second shell is a hollow structure to form a second powder bin inside the second shell, and the inner wall of the third shell and the part of the outer wall of the second shell facing the first shell together form a second waste powder bin.

[0009] As an optional embodiment, the present invention provides a developing box, wherein the first powder bin has at least one toner input port, the second powder bin has at least one toner output port, and the toner output port is correspondingly arranged to connect the second powder bin and the first powder bin; and / or, the first waste powder bin has at least one waste powder output port, the second waste powder bin has at least one waste powder input port, and the waste powder input port is correspondingly arranged to connect the second waste powder bin and the first waste powder bin.

[0010] As an optional manner, in the developer box provided by the present invention, a powder feeding mechanism is provided in the second powder bin, and the powder feeding mechanism is used to feed the toner in the second powder bin to the toner output port.

[0011] As an optional manner, the developing box provided by the present invention, the powder feeding mechanism includes a first powder feeding assembly, the first powder feeding assembly includes two parallel first rotating shafts and a conveyor belt wound around the outside of the two first rotating shafts, the first end of the conveyor belt extends into the interior of the second powder bin, the second end of the conveyor belt extends to the toner output port, and the conveying direction of the conveyor belt points to the toner output port.

[0012] In addition, a plurality of partitions are arranged at intervals along the length direction of the conveyor belt, and the partitions protrude from the conveying surface of the conveyor belt.

[0013] As an optional method, the developing box provided by the present invention, the powder feeding mechanism also includes a second powder feeding assembly, the second powder feeding assembly includes a second rotating shaft and a blade connected to the second rotating shaft, and the blade can rotate under the drive of the second rotating shaft to move the carbon powder to the first powder feeding assembly.

[0014] As an optional manner, in the developer box provided by the present invention, a recessed portion is provided on the wall of the second powder bin, and a shape of the recessed portion matches the rotation trajectory of the blade.

[0015] As an optional manner, the developer box provided by the present invention also includes a third powder bin, which is arranged on the side of the second powder bin, and the third powder bin is connected to the second powder bin, and the third powder bin has a toner adding port connected to the outside of the shell.

[0016] In addition, the second rotating shaft extends into the third powder bin, and a spiral blade is provided on the second rotating shaft. The spiral blade is located in the third powder bin and is used to deliver the carbon powder added in the third powder bin into the second powder bin under the drive of the second rotating shaft.

[0017] As an optional manner, the developing box provided by the present invention, the powder feeding mechanism also includes a third powder feeding assembly, the third powder feeding assembly is located at one end of the first powder feeding assembly facing the toner output port; the third powder feeding assembly includes a third rotating shaft, and the rotation direction of the third rotating shaft is opposite to the rotation direction of the conveyor belt.

[0018] As an optional manner, in the developer box provided by the present invention, a waste toner export mechanism is provided in the first waste toner bin, and the waste toner export mechanism is used to deliver the waste toner to the waste toner output port.

[0019] The present invention provides a developing box, comprising a developing assembly and a powder storage assembly, wherein the developing assembly and the powder storage assembly are detachably connected. The developing assembly comprises a first powder bin, a first waste powder bin and a developing unit, wherein the first powder bin is used to supply carbon powder to the developing unit, and the first waste powder bin is used to receive waste carbon powder output by the developing unit; the powder storage assembly comprises a shell, wherein a second powder bin and a second waste powder bin are provided in the shell; the second powder bin is connected to the first powder bin, and the second waste powder bin is connected to the first waste powder bin, thereby increasing the powder storage space of the powder box and greatly improving the powder storage capacity of the developing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a structural schematic diagram of a developing box provided according to an embodiment of the present application;

[0022] Figure 2 is a cross-sectional view of a developing box provided according to an embodiment of the present application;

[0023] Figure 3 It is a structural schematic diagram of a developing assembly of a developing box provided according to an embodiment of the present application;

[0024] Figure 4 It is a structural schematic diagram of a powder storage assembly of a developer cartridge provided according to an embodiment of the present application;

[0025] Figure 5 An exploded view of a powder storage assembly of a developer box provided according to an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1-developer box;

[0028] 10-developing assembly;

[0029] 11-developing unit;

[0030] 12- first powder bin;

[0031] 121-toner input port;

[0032] 13-first waste toner bin;

[0033] 131-waste powder outlet;

[0034] 132-waste powder export mechanism;

[0035] 20-powder storage component;

[0036] 21-housing;

[0037] 211-first housing;

[0038] 2111-depression;

[0039] 212- second housing;

[0040] 213- third housing;

[0041] 22- second powder bin;

[0042] 221-toner output port;

[0043] 23- second waste toner bin;

[0044] 231-waste powder input port;

[0045] 24- powder feeding mechanism;

[0046] 241-first powder feeding assembly;

[0047] 2411-first rotation axis;

[0048] 2412-Conveyor belt;

[0049] 2413-partition;

[0050] 2414-first gear;

[0051] 2415-first end;

[0052] 2416-second end;

[0053] 242-second powder feeding assembly;

[0054] 2421-second rotation axis;

[0055] 2422-leaf;

[0056] 2423-Spiral blade;

[0057] 2424-second gear;

[0058] 243-third powder feeding component;

[0059] 2431-third rotation axis;

[0060] 2432-third gear;

[0061] 25-side end cover;

[0062] 30- the third powder bin;

[0063] 40-Handle. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0065] First, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0066] Secondly, it should be noted that in the description of the present invention, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0067] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0070] As a detachable and replaceable office supplies, the developer box is widely used in imaging and developing devices such as printers or copiers. The developer box generally stores a developer such as toner. The developer box cooperates with the developing device to transfer the developer in the developer box to the paper, thereby realizing the printing function of the developing device. In the prior art, the developer box generally includes a powder bin, a waste powder bin and a developing unit. The powder bin and the waste powder bin are arranged on different sides of the developing unit. The powder bin is used to store a developer such as toner. The developer is supplied to the developing unit through a supply mechanism in the powder bin. The developing unit uses the developer to form an image, and the waste powder after the image is formed is stored in the waste powder bin. At present, the structural design of the developer box is generally compact and complex. The powder bin and the waste powder bin are arranged adjacent to the developing unit, and the shapes of the powder bin and the waste powder bin are adapted to the shape of the developing unit. However, the current structure of the developer box is relatively compact, and the powder storage space of the powder box is small, which directly affects the powder storage capacity of the developer box. The low powder storage capacity will result in a low service life of the developer box, which requires frequent replacement and causes waste.

[0071] In order to solve the above problems, an embodiment of the present invention provides a developer box, which increases the powder storage space of the powder box and improves the powder storage capacity of the developer box.

[0072] Figure 1 A schematic diagram of the appearance of a developing box provided according to an embodiment of the present application; Figure 2 is a cross-sectional view of a developing box provided according to an embodiment of the present application; Figure 3 A schematic diagram of the appearance of a developing assembly of a developing box provided according to an embodiment of the present application; Figure 4 A schematic diagram of the appearance of a powder storage assembly of a developer cartridge provided according to an embodiment of the present application; Figure 5 FIG. 1 is an exploded view of a powder storage assembly of a developer cartridge provided according to an embodiment of the present application. Figure 1-Figure 5 As shown, this embodiment provides a developing box 1, including: a developing component 10 and a powder storage component 20, and the developing component 10 and the powder storage component 20 are detachably connected.

[0073] Among them, the developing component 10 includes a first powder bin 12, a first waste powder bin 13 and a developing unit 11, the first powder bin 12 is used to supply toner to the developing unit 11, and the first waste powder bin 13 is used to receive the waste toner output by the developing unit 11; the powder storage component 20 includes a shell 21, and the shell 21 has a second powder bin 22 and a second waste powder bin 23; the second powder bin 22 is connected to the first powder bin 12, and the second waste powder bin 23 is connected to the first waste powder bin 13, thereby increasing the powder storage space and improving the powder storage capacity of the developing box 1.

[0074] Specifically, the developing unit 11 includes a photosensitive drum, which is pre-charged and forms a latent image under light. The toner in the first toner bin 12 is adsorbed onto the rotating photosensitive drum under the action of the charge to form an image, which can then be transferred to paper, and the residual toner on the continuously rotating photosensitive drum is cleaned into the first waste toner bin 13. The specific structure and working method of the developing unit 11 are prior art and will not be described in detail here.

[0075] In addition, the connection portion between the developing component 10 and the powder storage component 20 needs to be sealed to avoid leakage of toner. The first powder bin 12 and the first waste powder bin 13 of the developing component 10 are relatively independent closed cavities, and their structures are adapted to the developing unit 11. Similarly, the second powder bin 22 and the second waste powder bin 23 of the powder storage component 20 are also relatively independent cavities. Both of them serve as spatial extensions of the first powder bin 12 and the first waste powder bin 13, and are connected to the first powder bin 12 and the first waste powder bin 13 respectively. The toner in the second powder bin 22 can be replenished to the first powder bin 12, and the waste toner in the first waste powder bin 13 can also be transported to the second waste powder bin 23, thereby increasing the storage space for toner and waste toner.

[0076] Optionally, at least one threaded hole is provided on the outer surface of the developing component 10, and correspondingly, at least one through hole is provided at the position where the powder storage component 20 cooperates with the developing component 10, and the through hole corresponds one-to-one with the threaded hole on the outer surface of the developing component 10. During assembly, a screw is passed through the through hole on the powder storage component 20 and screwed into the threaded hole on the developing component 10 to achieve a fixed connection between the developing component 10 and the powder storage component 20.

[0077] As an optional method, the developing box 1 provided in an embodiment of the present invention, the shell 21 includes a first shell 211, a second shell 212 and a third shell 213, the first shell 211 is connected to the second shell 212, the second shell 212 is a hollow structure to form a second powder bin 22 inside the second shell 212, and the inner wall of the third shell 213 and the part of the outer wall of the second shell 212 facing the first shell 211 together form a second waste powder bin 23.

[0078] Specifically, the opening edge of the first shell 211 corresponds to the opening edge of the second shell 212, and the second shell 212 is covered on the first shell 211, so that the second powder bin 22 is relatively closed; the upper shell part of the second shell 212, that is, the part facing the first shell 211, has a recessed structure, thereby forming a sunken hollow part, and the edge of the recessed structure here corresponds to the edge of the third shell 213, and the third shell 213 is covered on the recessed structure, that is, the third shell 213 is covered on the top of the second shell 212, thereby forming the second waste powder bin 23, and making the second waste powder bin 23 relatively closed.

[0079] Optionally, the first powder bin 12 has at least one toner input port 121, and the second powder bin 22 has at least one toner output port 221, and the toner output port 221 is correspondingly arranged with the toner input port 121 to connect the second powder bin 22 and the first powder bin 12. If there is only one toner input port 121 and one toner output port 221, they are arranged at the middle position of the developing assembly 10 and the powder storage assembly 20 respectively; if there are multiple toner input ports 121 and multiple toner input ports 221, they are symmetrically arranged on the developing assembly 10 and the powder storage assembly 20 respectively.

[0080] Optionally, the shapes and sizes of the toner output port 221 and the toner input port 121 are adapted to each other so that they can be docked. The toner output port 221 is opened at the bottom of the first shell body 212, and the edge of the toner output port 221 has a raised structure, and the outer wall size of the raised structure is adapted to the size of the toner input port 121. When the toner output port 221 is connected to the toner input port 121, the raised structure on the toner output port 221 is inserted into the toner input port 121, and the insertion direction is from top to bottom. At the same time, a sealing rubber ring can be set at the interface. In this way, when the toner in the second powder bin 22 is replenished to the first powder bin 12, leakage of toner can be avoided.

[0081] Similarly, the first waste powder bin 13 has at least one waste powder output port 131, and the second waste powder bin 23 has at least one waste powder input port 231. The waste powder input port 231 is arranged corresponding to the waste powder output port 131 to connect the second waste powder bin 23 and the first waste powder bin 13. The waste powder output port 131 is adapted to the waste powder input port 231 in shape and size, and the opening edge of the waste powder output port 131 has a protruding structure, which is inserted into the waste powder input port 231 when the waste powder output port 131 is connected to the waste powder input port 231. At the same time, the connection between the two can adopt an interference fit or use a sealing ring at the connection part, so as to avoid leakage of waste toner in the first waste powder bin 13 during the process of inputting waste toner in the second waste powder bin 23.

[0082] As an optional method, the developing box 1 provided in the embodiment of the present invention is provided with a powder feeding mechanism 24 in the second powder bin 22, and the powder feeding mechanism 24 is used to feed the carbon powder in the second powder bin 22 to the carbon powder output port 221, thereby transporting the carbon powder in the second powder bin 22 to the first powder bin 12 through the carbon powder output port 221, thereby replenishing the carbon powder in the first powder bin 12.

[0083] Optionally, the powder feeding mechanism 24 includes a first powder feeding component 241, the first powder feeding component 241 includes two parallel first rotating shafts 2411 and a conveyor belt 2412 wound around the outside of the two first rotating shafts 2411, the first end 2415 of the conveyor belt 2412 extends into the interior of the second powder bin 22, the second end 2416 of the conveyor belt 2412 extends toward the toner output port 221, and the conveying direction of the conveyor belt 2412 points to the toner output port 221, the width of the conveyor belt 2412 is adapted to the width of the second powder bin 22, so that the first powder feeding component 241 can cover the second powder bin 22 as much as possible, thereby improving the powder feeding efficiency of the powder feeding component 241.

[0084] In addition, a plurality of partitions 2413 are arranged at intervals on the conveyor belt 2412 along the length direction of the conveyor belt 2412, and the partitions 2413 protrude from the conveying surface of the conveyor belt 2412. Specifically, the partitions 2413 are evenly spaced and arranged on the surface of the entire conveyor belt 2412, and the plate direction of the partitions 2413 is parallel to the first rotating shaft 2411, and an accommodating space is formed between adjacent partitions 2413, and the accommodating space can facilitate the accumulation of carbon powder, so that the conveyor belt 2412 can transport more carbon powder.

[0085] Optionally, the powder delivery mechanism 24 further includes a second powder delivery component 242, which includes a second rotating shaft 2421 and a blade 2422 connected to the second rotating shaft 2421, and the blade 2422 can rotate under the drive of the second rotating shaft 2421 to move the carbon powder to the first powder delivery component 241. Specifically, the second powder delivery component 242 is located inside the second powder bin 22, that is, the second powder delivery component 242 is located on the second end 2416 side of the first powder delivery component 241, and the blade 2422 is a plate-like structure, and the length of the blade 2422 along the axis direction of the second rotating shaft 2421 is equal to the length of the conveyor belt 2412 along the axis direction of the first rotating shaft 2411. In addition, the rotation direction of the second rotating shaft 2421 is the same as the rotation direction of the first rotating shaft 2411, so that the second rotating shaft 2421 drives the blade 2422 to move the carbon powder deep inside the second powder bin 22 to the transmission belt 2412.

[0086] Optionally, a recessed portion 2111 is provided on the wall of the second powder bin 22, and the shape of the recessed portion 2111 matches the rotation trajectory of the blade 2422. Specifically, the recessed portion 2111 is arc-shaped, and the recessed portion 2111 is disposed at the bottom of the first housing 211. On the one hand, the recessed portion 2111 allows the blade 2422 to move as much carbon powder as possible, and on the other hand, the recessed portion 2111 simultaneously expands the carbon powder storage space of the second powder bin 22.

[0087] Optionally, the powder feeding mechanism 24 further includes a third powder feeding assembly 243, and the third powder feeding assembly 243 is located at one end of the first powder feeding assembly 241 facing the toner output port 221. Specifically, the third powder feeding assembly 243 includes a third rotating shaft 2431, and the rotation direction of the third rotating shaft 2431 is opposite to the rotation direction of the conveyor belt 2412. A spiral structure is provided on the third rotating shaft 2431, and when the third rotating shaft 2431 rotates, the third powder feeding assembly 243 can cooperate with the first powder feeding assembly 241 to guide the toner above the toner output port 221 into the first powder bin 12.

[0088] Optionally, a first gear 2414 is installed at one end of the first rotating shaft 2411 in the first powder delivery assembly 241 facing one end of the toner output port 221, a second gear 2424 is also installed at one end of the second rotating shaft 2421 in the second powder delivery assembly 242, and similarly, a third gear 2432 is also installed at one end of the third rotating shaft 2431 in the third powder delivery assembly 243. The first gear 2414, the second gear 2424 and the third gear 2432 are all located outside the second powder bin 22, and the first gear 2414, the second gear 2424 and the third gear 2432 are located on the same side of the second powder bin 22. In addition, a side end cover 25 is also provided on the same side to cover the outside of the first gear 2414, the second gear 2424 and the third gear 2432.

[0089] Specifically, the first gear 2414 is meshed with the third gear 2432, and the first gear 2414 drives the third gear 2432 to rotate, while the second gear 2424 drives the first gear 2414 to rotate through a synchronous belt, and the synchronous belt is installed on the first rotating shaft 2411 and the second rotating shaft 2421. When the developing cartridge 1 is installed on the printing device, the driving mechanism in the printing device drives the second gear 2424 to rotate, thereby realizing the operation of the entire powder feeding mechanism 24.

[0090] As an optional method, the developing box 1 provided in an embodiment of the present invention further includes a third powder bin 30, which is arranged on the side of the second powder bin 22, and the third powder bin 30 is connected to the second powder bin 22. The third powder bin 30 can be provided with a toner adding port connected to the outside of the shell.

[0091] The third powder bin 30 can be integrally formed with the powder storage assembly 20 or can be separately provided. An inclined structure can be provided at the bottom of the third powder bin 30 so that the carbon powder in the third powder bin 30 can flow freely into the second powder bin 22 .

[0092] In addition, the second rotating shaft 2421 can extend into the third powder bin 30, and a spiral blade 2423 is set on the second rotating shaft 2421. The spiral blade 2423 is located in the third powder bin 30 and rotates driven by the second rotating shaft 2421 to stir the carbon powder in the third powder bin 30 and send it into the second powder bin 22.

[0093] As an optional method, the developer box 1 provided in the embodiment of the present invention is provided with a waste powder export mechanism 132 in the first waste powder bin, and the waste powder export mechanism 132 is used to deliver the waste toner to the waste powder output port 131, thereby transferring the waste toner in the first waste powder bin 13 to the second waste powder bin 23. The waste powder export structure 132 can adopt a structure similar to the second powder feeding component 242, that is, the blades are driven to rotate by the rotating shaft, thereby moving the waste toner, which will not be repeated here.

[0094] As an optional method, the developing box 1 provided in the embodiment of the present invention is provided with a handle 40 at the top of the powder storage assembly 20, specifically, at the top of the second shell 212. The two ends of the handle 40 can be fixedly connected to the top of the second shell 212 by screws, so that the developing box 1 can be easily taken.

[0095] A developing box 1 provided in an embodiment of the present invention comprises a developing assembly 10 and a powder storage assembly 20, wherein the developing assembly 10 is detachably connected to the powder storage assembly 20. The developing assembly 10 comprises a first powder bin 12, a first waste powder bin 13 and a developing unit 11, wherein the first powder bin 12 is used to supply toner to the developing unit 11, and the first waste powder bin 12 is used to receive waste toner outputted by the developing unit 11; the powder storage assembly 20 comprises a housing 21, wherein a second powder bin 22 and a second waste powder bin 23 are provided in the housing 21; the second powder bin 22 is connected to the first powder bin 12, and the second waste powder bin 23 is connected to the first waste powder bin 13, so that toner is replenished to the first powder bin 12 through the second powder bin 22, and waste toner outputted by the first waste powder bin 13 is received through the second waste powder bin 23, and the process of replenishing toner is realized by a powder feeding mechanism 24, and the conveying of waste toner is realized by a waste powder outlet mechanism 132, and in addition, a third powder bin 30 is provided on the side of the second powder bin 22, so as to replenish toner to the second powder bin 22. Therefore, the powder storage space of the developer box 1 is increased, and the powder storage capacity of the developer box 1 is greatly improved.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A developing box, characterized in that: include: A developing assembly and a powder storage assembly, wherein the developing assembly and the powder storage assembly are detachably connected; The developing assembly comprises a first toner bin, a first waste toner bin and a developing unit, wherein the first toner bin is used to supply toner to the developing unit, and the first waste toner bin is used to receive waste toner output by the developing unit; The powder storage assembly comprises a housing, wherein a second powder bin and a second waste powder bin are provided in the housing; The second powder bin is in communication with the first powder bin, and the second waste powder bin is in communication with the first waste powder bin; The shell includes a first shell, a second shell and a third shell, the first shell is connected to the outside of the second shell, the second shell is a hollow structure to form the second powder bin inside the second shell, and the inner wall of the third shell and the part of the outer wall of the second shell facing the first shell together form the second waste powder bin.

2. The developing cartridge according to claim 1, characterized in that: The first powder bin has at least one toner input port, and the second powder bin has at least one toner output port, and the toner output port is arranged corresponding to the toner input port to connect the second powder bin and the first powder bin; And / or, the first waste powder bin has at least one waste powder output port, the second waste powder bin has at least one waste powder input port, and the waste powder input port and the waste powder output port are correspondingly arranged to connect the second waste powder bin and the first waste powder bin.

3. The developing cartridge according to claim 2, characterized in that: A powder feeding mechanism is arranged in the second powder bin, and the powder feeding mechanism is used to feed the carbon powder in the second powder bin to the carbon powder output port.

4. The developing cartridge according to claim 3, characterized in that: The powder feeding mechanism includes a first powder feeding assembly, the first powder feeding assembly includes two first rotating shafts arranged in parallel and a conveyor belt wound around the outside of the two first rotating shafts, the first end of the conveyor belt extends into the second powder bin, the second end of the conveyor belt extends toward the toner output port, and the conveying direction of the conveyor belt points to the toner output port; A plurality of partitions are arranged on the conveyor belt at intervals along the length direction of the conveyor belt, and the partitions protrude from the conveying surface of the conveyor belt.

5. The developing cartridge according to claim 4, characterized in that: The powder feeding mechanism also includes a second powder feeding assembly, which includes a second rotating shaft and a blade connected to the second rotating shaft. The blade can rotate under the drive of the second rotating shaft to move the carbon powder to the first powder feeding assembly.

6. The developing cartridge according to claim 5, characterized in that: A recessed portion is provided on the wall of the second powder bin, and a shape of the recessed portion matches the rotation trajectory of the blade.

7. The developing cartridge according to claim 5 or 6, characterized in that: The device further comprises a third powder bin, which is arranged on the side of the second powder bin and is in communication with the second powder bin, and has a toner adding port in communication with the outside of the housing; The second rotating shaft extends into the third powder bin, and a spiral blade is provided on the second rotating shaft. The spiral blade is located in the third powder bin and is used to deliver the carbon powder added to the third powder bin into the second powder bin under the drive of the second rotating shaft.

8. The developing cartridge according to any one of claims 4 to 6, characterized in that: The powder feeding mechanism also includes a third powder feeding assembly, which is located at one end of the first powder feeding assembly facing the carbon powder output port; the third powder feeding assembly includes a third rotating shaft, and the rotation direction of the third rotating shaft is opposite to the rotation direction of the conveyor belt.

9. The developing cartridge according to any one of claims 3 to 6, characterized in that: A waste toner export mechanism is disposed in the first waste toner bin, and the waste toner export mechanism is used to deliver waste toner to the waste toner output port.

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