Developing cartridge

Abstract

The utility model relates to a developing box installed to the imaging equipment, and the developing box includes the box body for containing carbon powder, rotatable setting developing roller and powder feeding roller, driving force receiving part and drive transmission assembly. The box body includes the first casing and second casing along the second direction arrangement, and the first casing is located in front and forms the first carbon powder cavity, and the second casing forms the second carbon powder cavity. The second carbon powder cavity below is equipped with the second downside plate along the third direction extension, and it is relative to the second direction inclined setting, makes carbon powder under the gravity effect automatic forward slide to the first carbon powder cavity, need not to realize powder supplementing to the agitator. After driving force receiving part receives driving force, through drive transmission assembly, developing roller and powder feeding roller are driven and rotate along the first rotation direction. The utility model discloses simple structure, reduces the number of parts, reduces the manufacturing cost, and improves the powder supply reliability.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging, and more particularly to a developing cartridge that can be detachably installed in an electrophotographic imaging device. Background Technology

[0002] In image forming equipment, the developing cartridge typically includes multiple toner chambers to achieve zoned storage and management of toner. The first toner chamber, serving as the main toner supply area, is located at the front of the developing cartridge, adjacent to the developing roller, and directly supplies toner to the developing roller. The second toner chamber is located at the rear of the developing cartridge, away from the developing roller, and is used to store spare toner. To achieve toner transport from the rear chamber to the front chamber, existing technology often incorporates a separate agitator in the second toner chamber to propel the toner forward.

[0003] However, this structure requires separate stirring components in the two toner chambers, increasing the number of parts in the developing cartridge. This not only increases mold costs and assembly complexity but also raises the difficulty of production management and quality control. Furthermore, multiple stirring components occupy a significant amount of space, hindering the miniaturization design of the developing cartridge and potentially leading to synchronization problems or jamming during long-term operation, affecting the reliability of toner supply.

[0004] Therefore, there is an urgent need to provide an improved developer cartridge structure. By optimizing the shell design, the toner in the second toner chamber can automatically slide forward into the first toner chamber under the action of gravity, achieving smooth toner supply without the need for additional stirring components, thereby reducing the number of parts, simplifying the structure, and lowering manufacturing costs. Utility Model Content

[0005] In view of the above, this utility model provides a developing cartridge with the following technical solution to solve the above-mentioned technical problems. The specific solution is as follows:

[0006] A developing cartridge, installed in an imaging device in a forward direction, characterized in that the developing cartridge comprises: a cartridge body for containing toner; a developing roller rotatably disposed in the cartridge body for carrying toner, the developing roller rotating about a rotation axis extending in a first direction along a first rotation direction, the longitudinal end of the developing roller being provided with a developing drive member for driving the developing roller to rotate; a powder feeding roller rotatably disposed in the cartridge body for supplying toner toward the developing roller, the longitudinal end of the powder feeding roller being provided with a powder feeding drive member for driving the powder feeding roller to rotate; a driving force receiving member for receiving driving force from the imaging device; and a driving transmission assembly for transmitting the driving force received by the driving force receiving member to the developing drive member and the powder feeding drive member;

[0007] The box body includes a first shell and a second shell arranged along a second direction, the second direction intersecting the first direction, the first shell being located in front of the second shell along the second direction, the first shell forming a first toner cavity, and the second shell forming a second toner cavity.

[0008] Along the third direction, a second lower side plate is provided below the second toner cavity. The second lower side plate is inclined relative to the second direction, and along the second direction, the front end of the second lower side plate is closer to the first toner cavity than the rear end. The first direction, the second direction and the third direction are perpendicular to each other.

[0009] When the imaging device detects that the amount of toner in the first toner chamber is sufficient or insufficient, the developing drive and the toner feeding drive are both driven by the drive and transmission assembly to rotate in the first rotation direction. Through the inclined second lower side plate, the toner in the second toner chamber automatically slides forward into the first toner chamber under the action of gravity. This achieves smooth toner supply without the need for a stirring component, simplifies the structure, and reduces the manufacturing cost of the developing cartridge.

[0010] In some embodiments, the first toner chamber and the second toner chamber are directly connected, which facilitates smooth toner flow, improves toner replenishment efficiency, and ensures continuous toner supply and development stability.

[0011] In some embodiments, the first housing has a first upper side plate and a first lower side plate located above and below the first toner cavity, respectively, and the second housing has a second upper side plate located above the second toner cavity. The first upper side plate and the first lower side plate are arranged opposite each other in a third direction, and the second upper side plate and the second lower side plate are arranged opposite each other in a third direction. The upper and lower side plates are symmetrically arranged to enhance the structural strength of the housing, ensure the sealing performance and assembly stability of the toner cavity, and improve the overall reliability of the developing cartridge.

[0012] In some embodiments, the housing is configured to be opaque, the imaging device detects that the amount of toner in the first toner chamber is sufficient, the driving force receiver is rotated in the second rotation direction by the driving force output by the imaging device, the developing roller and the toner feeding roller are both driven to rotate in the first rotation direction, the driving force receiver rotates in one direction, simplifying the transmission design, avoiding the reversing mechanism, and improving the driving stability and system reliability.

[0013] In some embodiments, the drive transmission assembly includes a first transmission element, a second transmission element, and a third transmission element. The second transmission element is simultaneously connected to both the first and third transmission elements, and the third transmission element is simultaneously connected to both the developing drive element and the powder feeding drive element. Through the linkage of the three-stage transmission elements, the structure is compact, the transmission is stable, and the power distribution efficiency is improved.

[0014] In some embodiments, both the first lower side plate and the second lower side plate are configured to be light-transmitting. When the imaging device detects that the amount of toner in the first toner cavity is insufficient, the driving force receiving member rotates along the first rotation direction. The developing roller and the toner feeding roller are both driven to rotate along the first rotation direction. The driving force receiving member rotates in the same direction as the developing roller and the toner feeding roller, which simplifies the transmission path, avoids the reversing mechanism, and improves transmission efficiency and operational stability.

[0015] In some embodiments, the drive transmission assembly includes a first transmission element and a second transmission element. The second transmission element is combined with the first transmission element, the developing drive element, and the powder feeding drive element, resulting in a compact structure, reduced number of parts, and improved transmission efficiency and system reliability.

[0016] In some embodiments, the housing has a toner receiving section for containing toner and a first stirring member rotatably disposed in the toner receiving section. The first stirring member is used to stir the toner and convey the toner toward the toner feed roller. The first stirring member has both stirring and conveying functions, effectively preventing toner agglomeration, ensuring stable toner supply to the toner feed roller, and improving development uniformity and reliability.

[0017] In some embodiments, the driving force receiver is configured to rotate in opposite directions, a first rotation direction and a second rotation direction. When the amount of toner in the first toner chamber is sufficient, the driving force from the imaging device drives the driving force receiver to rotate in the second rotation direction. When the amount of toner in the first toner chamber is insufficient, the driving force from the imaging device drives the driving force receiver to rotate in the first rotation direction. The bidirectional rotation of the driving force receiver adapts to different states, realizing differentiated driving control when the toner is sufficient or insufficient, and improving the operational stability of the developing cartridge.

[0018] In some embodiments, when viewed from the side of the developing cartridge where the driving force receiver is located along the first direction, the first rotation direction is counterclockwise, which facilitates the standardization of transmission design and assembly direction, and improves assembly accuracy and consistency.

[0019] The beneficial effects of this utility model are as follows: by using the inclined second lower side plate, the toner in the second toner chamber automatically slides forward into the first toner chamber under the action of gravity, eliminating the need for a stirring component in the second toner chamber, reducing the number of parts, simplifying the structure, reducing manufacturing costs, and improving the reliability of toner supply and assembly efficiency. Attached Figure Description

[0020] Figure 1 This is a perspective view of the developing cartridge involved in Embodiment 1 of this utility model.

[0021] Figure 2 It is along Figure 1 A cross-sectional view after being cut along the AA direction.

[0022] Figure 3 This is a side view of the developing cartridge according to Embodiment 1 of this utility model when the end cap is hidden, viewed from left to right along the first direction.

[0023] Figure 4 In the developing cartridge according to Embodiment 2 of this utility model, along Figure 1 A cross-sectional view after being cut along the AA direction.

[0024] Figure 5 This is a side view of the developing cartridge according to Embodiment 2 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0025] Figure 6 This is a perspective view of the developing cartridge involved in Embodiment 3 of this utility model.

[0026] Figure 7 In the developing cartridge according to Embodiment 3 of this utility model, along Figure 1 A cross-sectional view after being cut along the AA direction.

[0027] Figure 8 This is a side view of the developing cartridge according to Embodiment 3 of this utility model when the end cap is hidden, viewed from left to right along the first direction.

[0028] Figure 9 This is a side view of another developing cartridge according to Embodiment 3 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0029] Figure 10 This is a side view of the developing cartridge according to Embodiment 4 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0030] Figure 11 This is a side view of another developing cartridge according to Embodiment 4 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0031] Figure 12 This is a perspective view of the developing cartridge with the end cap hidden, according to Embodiment 4 of this utility model. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0033] [Example 1]

[0034] Figure 1 This is a perspective view of the developing cartridge according to Embodiment 1 of this utility model; Figure 2 It is along Figure 1 Cross-sectional view after being cut along the AA direction; Figure 3This is a side view of the developing cartridge according to Embodiment 1 of this utility model when the end cap is hidden, viewed from left to right along the first direction.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the developing cartridge 100 includes a cartridge body 1, a rotating member 2, an end cap 11, and a driving force receiving member 3. The cartridge body 1 has a toner receiving portion 10 for containing toner. The end cap 11 is fixedly disposed relative to the cartridge body 1. Preferably, the end cap 11 is fixedly mounted on the cartridge body 1. The rotating member 2 is rotatably disposed on the cartridge body 1. The driving force receiving member 3 is exposed through the end cap 11 and is used to receive driving force from outside the developing cartridge to directly or indirectly drive the rotating member 2 to rotate.

[0036] The developing cartridge 100 can be directly and detachably installed onto the imaging device, or it can be detachably installed onto a drum housing containing a photosensitive drum, and then the drum housing containing the developing cartridge can be detachably installed onto the imaging device. The driving force receiving member 3 is configured to receive driving force from the imaging device. The rotating member 2 includes at least a developing roller 21 for carrying toner and a stirring assembly for stirring the toner, such as... Figure 1 As shown, after receiving the driving force from the driving force receiver 3, the developing roller 21 rotates around the rotation axis L1 in the direction shown by r1 (first rotation direction).

[0037] In the following text, the rotation axis L1 is defined to extend along a first direction / left-right direction / longitudinal direction. Along the first direction, the side where the driving force receiving member 3 is located is the left side, and the right side is opposite to the left side. The direction intersecting with the first direction is the second direction / front-back direction / lateral direction. Along the second direction, the developing roller 21 is located in front of the cartridge 1. The developing cartridge 100 is installed in a basically forward direction. At the same time, the direction intersecting with the first direction and the second direction is the third direction / vertical direction / up-down direction. Preferably, the first direction, the second direction and the third direction are perpendicular to each other.

[0038] Furthermore, the developing cartridge 100 also includes a toner dispensing blade 12 fixedly installed on the cartridge body 1. The toner dispensing blade 12 contacts the developing roller 21 and is used to adjust the thickness of the toner layer on the surface of the developing roller 21.

[0039] Furthermore, the developing cartridge 100 also includes a chip 4 for storing parameter information about the developing cartridge 100. When the chip 4 establishes a communication connection with the imaging device, the parameter information of the developing cartridge 100 can be obtained by the imaging device; such as Figure 1As shown, the chip 4 has an electrical contact portion 41 for making electrical contact with a stylus in an imaging device. The electrical contact portion 41 is disposed on the end cover 11. The chip 4 establishes a communication connection with the imaging device by forming an electrical contact with the stylus through the electrical contact portion 41. It should be understood that the orientation of the electrical contact portion 41 should not be restricted. That is, the electrical contact portion 41 can be oriented towards any one of the first direction, the second direction, and the third direction, or towards a direction inclined relative to the first direction.

[0040] like Figure 2 As shown, the rotating component 2 also includes a powder feeding roller 22 rotatably disposed in the housing 1. The powder feeding roller 22 contacts the developing roller 21 and is used to supply toner to the developing roller 21. In this embodiment, the stirring component is a first stirring component 23 rotatably disposed in the toner receiving part 10. The first stirring component 23 is used to stir the toner and convey the toner to the powder feeding roller 22. The first stirring component 23 has both stirring and conveying functions, effectively preventing toner agglomeration, ensuring stable powder supply to the powder feeding roller 22, and improving the uniformity and reliability of development.

[0041] Furthermore, in this embodiment, the housing 1 includes a first shell 1a and a second shell 1b arranged along the second direction. The first shell 1a is located in front of the second shell 1b. The first shell 1a forms a first toner cavity 10a that can accommodate toner, and the second shell 1b forms a second toner cavity 10b that can accommodate toner. In this embodiment, the first shell 1a and the second shell 1b are connected to each other. Preferably, the first shell 1a and the second shell 1b are integrally formed. Therefore, the first toner cavity 10a and the second toner cavity 10b are directly connected, which facilitates the smooth flow of toner, improves the toner replenishment efficiency, and ensures the continuity of toner supply and the stability of development. The first stirring member 23 is disposed in the first toner cavity 10a or the second toner cavity 10b.

[0042] Along a third direction, the first housing 1a also has a first upper side plate 1a1 and a first lower side plate 1a2 located above and below the first toner cavity 10a, respectively. The second housing 1b also has a second upper side plate 1b1 and a second lower side plate 1b2 located above and below the second toner cavity 10b, respectively. That is, the first upper side plate 1a1 and the first lower side plate 1a2 are arranged opposite each other in a third direction, and the second upper side plate 1b1 and the second lower side plate 1b2 are arranged opposite each other in a third direction. The side plates on the upper and lower sides are symmetrically arranged, which enhances the structural strength of the housing, ensures the sealing performance and assembly stability of the toner cavity, and improves the overall reliability of the developing cartridge.

[0043] Generally, the imaging device is also equipped with a residual detection device for detecting the remaining amount of toner. For example, the residual detection device is configured as a light detection device for emitting detection light into the toner container 10. The imaging device determines the remaining amount of toner by detecting whether the detection light can be received.

[0044] When the remaining quantity detection element is set as a light detection element, in this embodiment, the housing 1 is set to be opaque, so that the detection light emitted by the light detection element cannot reach the toner container 10, and the toner in the toner container 10 can be fully consumed.

[0045] The drive transmission component 5 in this embodiment is described below.

[0046] like Figure 3 As shown, the developing cartridge 100 also includes a drive transmission assembly 5, a developing drive 21A disposed at the longitudinal end of the developing roller 21, a powder feeding drive 22A disposed at the longitudinal end of the powder feeding roller 22, and a first stirring drive 23A disposed at the longitudinal end of the first stirring member 23. The driving force received by the driving force receiving member 3 from the imaging device is transmitted to the developing drive 21A, the powder feeding drive 22A and the first stirring drive 23A through the drive transmission assembly 5, thereby driving the rotating member 2 to rotate about a rotation axis parallel to the first direction.

[0047] In this embodiment, the driving force receiver 3 is configured to rotate around a rotation axis parallel to the first direction along a first rotation direction r1 and a second rotation direction r2 opposite to the first rotation direction r1. However, regardless of the rotation direction of the driving force receiver 3, the developing roller 21 and the powder feeding roller 22 rotate along the first rotation direction r1. When viewed from the side where the driving force receiver 3 is provided along the first direction, the first rotation direction r1 is counterclockwise, which facilitates the standardization of transmission design and assembly direction, and improves assembly accuracy and consistency.

[0048] Specifically, the drive transmission assembly 5 includes a first transmission member 51, a second transmission member 52, a third transmission member 53, and a fourth transmission member 54. The first transmission member 51 is coaxially arranged with the drive force receiving member 3. The second transmission member 52 is simultaneously connected to both the first transmission member 51 and the third transmission member 53. The third transmission member 53 is also simultaneously connected to the developing drive member 21A and the powder feeding drive member 22A. The fourth transmission member 54 is simultaneously connected to both the first transmission member 51 and the first stirring drive member 23A. The first transmission member 51 can be driven by the drive force receiving member 3 and rotates in the same direction as the drive force receiving member 3.

[0049] As described above, in this embodiment, the housing 1 is configured to be opaque, and the driving force receiving element 3 will continuously receive the driving force output by the imaging device along... Figure 3The drive force receiving component rotates in a clockwise direction (second rotation direction) r2, simplifying the transmission design, avoiding a reversing mechanism, and improving drive stability and system reliability. Consequently, the first transmission component 51 also rotates along the second rotation direction r2. The second transmission component 52, acting as a second intermediate component, transmits the driving force from the first transmission component 51 to the third transmission component 53, and along... Figure 3 The third transmission member 53, which rotates counterclockwise, acts as an idler wheel to transmit the driving force from the second transmission member 52 to the developing drive member 21A and the powder feeding drive member 22A, respectively. As a result, both the developing roller 21 and the powder feeding roller 22 are driven and rotate along the first rotation direction r1. Through the linkage of the three-stage transmission members, the structure is compact, the transmission is stable, and the power distribution efficiency is improved.

[0050] The first transmission member 51 also transmits the driving force to the fourth transmission member 54, which acts as a first intermediate member to transmit the driving force to the first stirring drive member 23A, thereby causing the first stirring member 23A to move along... Figure 3 The second rotation direction is r2.

[0051] Furthermore, along the second direction, at least a portion of the first stirring element 23 is disposed in the first toner chamber 10a, to ensure that the toner in the second toner chamber 10b can be smoothly supplied forward, such as... Figure 2 As shown, the second lower side plate 1b2 is set to be inclined relative to the second direction. Along the second direction, the front end of the second lower side plate 1b2 is closer to the first toner cavity 10a than the rear end. In this way, under the action of the toner's own gravity, the toner in the second toner cavity 10b can automatically slide towards the first toner cavity 10a. Even if no stirring element is provided in the second toner cavity 10b, the toner in the second toner cavity 10b can be supplied forward smoothly, which helps to reduce the cost of the developing cartridge 100.

[0052] In some embodiments, each of the transmission components in the drive transmission assembly 5, as well as the developing drive component 21A, the powder feeding drive component 22A, and the first stirring drive component 23A, can be configured as at least one of a gear, a friction wheel, a pulley, or a ratchet, as long as it can transmit driving force between two adjacent components.

[0053] In this embodiment, only the first stirring element 23 needs to be set, thereby reducing the number of parts in the developing cartridge 100, simplifying its drive system structure, and reducing the cost of the developing cartridge 100.

[0054] [Example 2]

[0055] Figure 4 In the developing cartridge according to Embodiment 2 of this utility model, along Figure 1 Cross-sectional view after being cut along the AA direction; Figure 5 This is a side view of the developing cartridge according to Embodiment 2 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0056] like Figure 4 As shown, unlike Embodiment 1, in this embodiment, both the first lower side plate 1a2 and the second lower side plate 1b2 are set to be light-transmitting. Therefore, the detection light emitted by the photodetector in the imaging device can enter the first toner cavity 10a and the second toner cavity 10b. According to the detection settings of the imaging device, the imaging device will consider that there is not enough toner in the developing cartridge 100, or that there is no toner at all. At this time, the driving force from the imaging device drives the driving force receiver 3 to rotate in the counterclockwise direction (i.e., the first rotation direction r1).

[0057] like Figure 5 As shown, the drive transmission component 5 in this embodiment includes a first transmission component 51, a second transmission component 52, and a fourth transmission component 54. The first transmission component 51 is coaxially arranged with the drive force receiving component 3 and can be driven by the drive force receiving component 3 to rotate in the same direction as the drive force receiving component 3. The second transmission component 52 is simultaneously combined with the first transmission component 51, the developing drive component 21A, and the powder feeding drive component 22A. A single transmission component drives multiple components, resulting in a compact structure, reduced number of parts, and improved transmission efficiency and system reliability. The fourth transmission component 54 is simultaneously combined with the first conducting component 51 and the first stirring drive component 23A.

[0058] When the driving force receiver 3 rotates along the first rotation direction r1 driven by the driving force from the imaging device, the second transmission member 52 rotates along the second rotation direction r2, and the fourth transmission member 54 also rotates along the second rotation direction r2. As a result, the developing drive member 21A, the powder feeding drive member 22A, and the first stirring drive member 23A all rotate along the first rotation direction r1. The driving force receiver rotates in the same direction as the developing roller and the powder feeding roller, which simplifies the transmission path, avoids the reversing mechanism, and improves the transmission efficiency and operational stability.

[0059] [Example 3]

[0060] Figure 6 This is a perspective view of the developing cartridge according to Embodiment 3 of this utility model; Figure 7 In the developing cartridge according to Embodiment 3 of this utility model, along Figure 1 Cross-sectional view after being cut along the AA direction; Figure 8 This is a side view of the developing cartridge according to Embodiment 3 of this utility model when the end cap is hidden, viewed from left to right along the first direction. Figure 9 This is a side view of another developing cartridge according to Embodiment 3 of this utility model, when the end cap is hidden, viewed from left to right along the first direction.

[0061] Components identical to those in the above embodiments will use the same numbering. In this embodiment, chip 4 / electrical contact 41 is disposed on housing 1, such as... Figure 6 As shown, in some embodiments, along a third direction, the chip 4 / electrical contact 41 faces upward.

[0062] like Figure 7 As shown, in this embodiment, the first housing 1a and the second housing 1b are separately arranged, that is, the first housing 1a and the second housing 1b are detachably combined. The first housing 1a is also provided with a toner inlet 1a4, and the second housing 1b is also provided with a toner outlet 1b4. When the first housing 1a and the second housing 1b are combined, the toner inlet 1a4 and the toner outlet 1b4 are opposite each other, and the toner in the second toner chamber 10b enters the first toner chamber 10a in sequence through the toner outlet 1b4 and the toner inlet 1a4. The first stirring member 23 is rotatably arranged in the first toner chamber 10a. The developing cartridge 100 also includes a second stirring member 25 and a second stirring drive member 25A arranged at the longitudinal end of the second stirring member. The second stirring member 25 is rotatably arranged in the second toner chamber 10b.

[0063] In some embodiments, the developing cartridge 100 further includes an extension plate 1a5 connected to the first lower side plate 1a2 / first housing 1a, the extension plate 1a5 being used to support the second housing 1b, thereby enabling the first housing 1a and the second housing 1b to be more stably connected.

[0064] In some embodiments, the developing cartridge 100 further includes a transfer member 24 rotatably disposed in the second housing 1b, the transfer member 24 being disposed adjacent to the toner outlet 1b4 for conveying toner in the second toner chamber 10b toward the toner outlet 1b4; further, the developing cartridge 100 also includes a transfer drive member 24A disposed at the longitudinal end of the transfer member 24; preferably, the transfer member 24 is configured as a screw.

[0065] like Figure 8 As shown, the drive transmission assembly 5 in this embodiment includes a first transmission member 51, a second transmission member 52, a third transmission member 53, a fourth transmission member 54, a fifth transmission member 55, and a sixth transmission member 56. The first transmission member 51 is coaxially arranged with the drive force receiving member 3 and can be driven by the drive force receiving member 3 and rotate in the same direction as the drive force receiving member 3. The second transmission member 52 and the fourth transmission member 54 are both configured to be movable relative to the housing 1, and the second transmission member 52 has a large-diameter portion and a small-diameter portion arranged coaxially.

[0066] The second transfer member 52 is movable between a first position and a second position. In the first position, the second transfer member 52 is engaged with the first transfer member 51 but not with the first stirring drive member 23A. In the second position, the second transfer member 52 is not engaged with the first transfer member 51 but is engaged with the first stirring drive member 23A. Specifically, in the first position, the small diameter portion of the second transfer member 52 is engaged with the first transfer member 51, and in the second position, the large diameter portion of the second transfer member 52 is engaged with the first stirring drive member 23A.

[0067] The fourth transfer member 54 is movable between a third position and a fourth position. In the third position, the fourth transfer member 54 is engaged only with the first transfer member 51. In the fourth position, the fourth transfer member 54 is engaged with the transfer drive member 24A.

[0068] like Figure 8 As shown, when the imaging device detects that the amount of toner in the first toner chamber 10a is sufficient, the driving force from the imaging device drives the driving force receiver 3 along... Figure 8 The second transmission member 52 is in the first position, the fourth transmission member 54 is in the third position, and the third transmission member 53 is simultaneously connected with the second transmission member 52, the developing drive member 21A, and the powder feeding drive member 22A. Thus, the driving force received by the driving force receiver 3 is sequentially transmitted to the developing drive member 21A and the powder feeding drive member 22A via the first transmission member 51, the second transmission member 52, and the third transmission member 53, respectively. Furthermore, the second transmission member 52, the developing drive member 21A, and the powder feeding drive member 22A all rotate clockwise (in the second rotation direction r2). Figure 8 The third driving member 53 rotates counterclockwise (in the first rotation direction r1) along the direction of rotation. Figure 8 The fourth transmission member 54 is driven by the first transmission member 51 to rotate clockwise (in the second rotation direction r2) and move along the clockwise direction (in the second rotation direction r2). Figure 8 The first stirring drive 23A rotates counterclockwise (in the first rotation direction r1) without moving; the first transmission component 51 drives it along... Figure 8 The developing roller 21, the powder feeding roller 22, and the first stirring element 23 all rotate counterclockwise (in the first rotation direction r1). Figure 8 Rotate counterclockwise.

[0069] Since the fourth transfer member 54 is not connected to the transfer drive member 24A, the transfer drive member 24A, the fifth transfer member 55, the sixth transfer member 56, and the second stirring member 25 do not rotate, and the toner in the second toner chamber 10b will not be supplied to the first toner chamber 10a.

[0070] When the imaging device detects that the amount of toner in the first toner chamber 10a is insufficient, the driving force from the imaging device drives the driving force receiver 3 along... Figure 9The first transmission member 51 rotates counterclockwise (in the first rotation direction r1) and correspondingly, the first transmission member 51 also rotates in the same direction. Figure 9 The first stirring drive unit 23A, which is connected to the first transmission member 51, rotates counterclockwise along the direction of the first transmission member 51. Figure 9 The first transmission member 51 rotates clockwise, and under the tangential force applied by the first transmission member 51 to the second transmission member 52, the second transmission member 52 moves from the first position to the second position. Thus, the second transmission member 52 can be driven by the first stirring drive member 23A along... Figure 9 Rotating counterclockwise, since the third transfer member 53 is simultaneously engaged with the second transfer member 52, the developing drive member 21A, and the powder feeding drive member 22A, as... Figure 9 As shown, the third transfer member 53 will rotate clockwise, while the developing drive member 21A and the toner feeding drive member 22A will both rotate counterclockwise. The driving force receiving member rotates bidirectionally to adapt to different states, thereby realizing differentiated drive control when the toner is sufficient or insufficient, and improving the operational stability of the developing cartridge.

[0071] Simultaneously, under the tangential force applied by the first transfer member 51 to the fourth transfer member 54, the fourth transfer member 54 moves from the third position to the fourth position. At this time, the fourth transfer member 54 will simultaneously engage with the first transfer member 51 and the transfer drive member 24A. Thus, the first transfer member 51 can transmit the driving force of the driving force receiving member 3 to the transfer drive member 24A through the fourth transfer member 54. Then, through the transfer drive member 24A, the driving force is transmitted sequentially to the second stirring drive member 25A through the fifth drive member 55 and the sixth drive member 56. Finally, the second stirring drive member 25 also begins to rotate, and the toner in the second toner chamber 10b can be transported to the transfer member 24. Then, the toner in the transfer member 24 is supplied to the first toner chamber 10a through the toner outlet 1b4 and the toner inlet 1a4.

[0072] In some embodiments, only one of the fifth transfer member 55 and the sixth transfer member 56 may be provided, or neither may be provided, or other transfer members may be provided between the sixth transfer member 56 and the second stirring drive member 25A, as long as the transfer drive member 24A can transmit the driving force to the second stirring drive member 25A.

[0073] Based on the inventive concept of this utility model, the second transfer member 52 and the third transfer member 53 may not be directly connected. Other transfer members may be set between the second transfer member 52 and the third transfer member 53 according to design requirements, as long as the developing drive member 21A and the powder feeding drive member 22A can be driven counterclockwise. Similarly, other transfer members may also be set between the fourth transfer member 54 and the transfer drive member 24A, as well as between the transfer drive member 24A and the second stirring drive member 25A, as long as the second stirring drive member 25A can be driven.

[0074] Both the second transfer member 52 and the fourth transfer member 54 are configured to be movable relative to the housing 1, which can improve the service life of the second transfer member 52 and the fourth transfer member 54.

[0075] [Example 4]

[0076] Figure 10 This is a side view of the developing cartridge according to Embodiment 4 of this utility model when the end cap is hidden, viewed from left to right along the first direction. Figure 11 This is a side view of another developing cartridge according to Embodiment 4 of this utility model, when the end cap is hidden, viewed from left to right along the first direction. Figure 12 This is a perspective view of the developing cartridge with the end cap hidden, according to Embodiment 4 of this utility model.

[0077] Compared with Embodiment 3, the drive transmission component 5 in this embodiment further includes a seventh transmission member 57, and the second transmission member 52 does not need to be configured to be movable relative to the housing 1, but the fourth transmission member 54 is still configured to be movable relative to the housing 1. The second transmission member 52 is simultaneously connected with the third transmission member 53 and the first stirring drive member 23A. The third transmission member 53 is also simultaneously connected with the developing drive member 21A and the powder feeding drive member 22A. The fourth transmission member 54 in this embodiment has a fifth position and a sixth position. In the fifth position, the fourth transmission member 54 is simultaneously connected with the first transmission member 51 and the first stirring drive member 23A, but the fourth transmission member 54 is not connected with the transfer drive member 24A. In the sixth position, the fourth transmission member 54 is simultaneously connected with the first transmission member 51 and the transfer drive member 24A, but the fourth transmission member 54 is not connected with the first stirring drive member 23A.

[0078] In some embodiments, the seventh transmission member 57 is not coaxially arranged with the driving force receiver 3 to simplify the structure of the driving force receiver 3. At the same time, since the driving force receiver 3 directly receives the driving force, this arrangement of the seventh transmission member 57 can also reduce the impact of the instantaneous impact on the seventh transmission member 57 when the driving force receiver 3 receives the driving force.

[0079] The first stirring drive component 23A is not engaged with the first transmission component, and the seventh transmission component 57 is preferably configured as a clutch engaged with the first transmission component 51, specifically, as follows: Figure 12 As shown, the seventh transmission member 57 is coaxially arranged with the first stirring drive member 23A and can move between a transmission position engaged with the first stirring drive member 23A and a disconnection position disengaged from the first stirring drive member 23A.

[0080] When the imaging device detects that the amount of toner in the first toner chamber 10a is sufficient, the fourth transmission member 54 is in the fifth position, and the seventh transmission member 57 is in the disconnected position and is driven to idle by the first transmission member 51, such as... Figure 10As shown, the driving force from the imaging device drives the driving force receiver 3 along... Figure 10 Rotating clockwise, the fourth transmission element 54 will be driven along... Figure 10 The first stirring drive component 23A will rotate counterclockwise along the middle. Figure 10 The driving force is then transmitted clockwise through the second transmission member 52 and the third transmission member 53 to the developing drive member 21A and the powder feeding drive member 22A, and the second transmission member 52 rotates clockwise. Figure 10 Rotating counterclockwise, the third transmission component 53 moves along... Figure 10 Rotating clockwise, the developing drive unit 21A and the powder feeding drive unit 22A move along... Figure 10 As the developing roller 21 and the powder feeding roller 22 rotate counterclockwise, they also rotate accordingly. Figure 10 Rotate counterclockwise.

[0081] As described above, the fourth transfer member 54 in the fifth position is not engaged with the transfer drive member 24A. Therefore, the transfer drive member 24A, the fifth transfer member 55, the sixth transfer member 56, and the second stirring drive member 25A are not driven, and the toner in the second toner chamber 10b cannot be supplied to the first toner chamber 10a.

[0082] When the imaging device detects that the amount of toner in the first toner chamber 10a is insufficient, such as Figure 11 As shown, the driving force from the imaging device drives the driving force receiver 3 along... Figure 10 The roller rotates counterclockwise. Simultaneously, the seventh transfer member 57 reaches the transfer position. Under the tangential force applied by the first transfer member 51 to the fourth transfer member 54, the fourth transfer member 54 moves from the fifth position to the sixth position. Thus, the driving force output by the first transfer member 51 is transmitted to the transfer drive member 24A via the fourth transfer member 54, and then sequentially to the second stirring drive member 25A via the fifth transfer member 55 and the sixth transfer member 56. The driving force output by the first transfer member 51 is also transmitted to the first stirring drive member 23A via the seventh transfer member 57, and then sequentially to the developing drive member 21A and the powder feeding drive member 22A via the second transfer member 52 and the third transfer member 53. Finally, the developing roller 21 follows the developing drive member 21A along... Figure 11 The powder feeding roller 22 rotates counterclockwise, following the powder feeding drive component 22A along... Figure 11 Rotating counterclockwise, the transfer component 24 follows the transfer drive component 24A along... Figure 11 The second stirring component 25 rotates counterclockwise, following the second stirring drive component 25A along... Figure 11 When rotated clockwise, the toner in the second toner chamber 10b can be conveyed to the transfer member 24, and then supplied to the first toner chamber 10a by the transfer member 24 through the toner outlet 1b4 and the toner inlet 1a4.

[0083] In this embodiment, when the amount of toner in the first toner cavity 10a is sufficient, the first driving member 51 only needs to drive the fourth transmission member 54, which helps to reduce the load on the first conductive member 51 / driving force receiving member 3, and the structure of the driving transmission member 5 becomes simple.

[0084] As described above, the second housing 1b and the first housing 1a are detachably connected, which produces the following beneficial effects:

[0085] 1. When the toner in the first toner chamber 10a is sufficient, the second housing 1b may not need to be installed in the first housing 1a. For example, when the developing cartridge 100 is sold or transported, if the second housing 1b is not installed, the overall weight and volume of the developing cartridge 100 can be reduced, thereby reducing the packaging cost and transportation cost of the developing cartridge 100.

[0086] 2. For end users, the price of the developer cartridge 100 without the second housing 1b can also be reduced, which is especially beneficial for users with low printing / imaging needs. The second housing 1b is only installed on the first housing 1a when the amount of toner in the first toner chamber 10a is insufficient.

[0087] 3. If the amount of toner in the second toner chamber 10b is insufficient, the user only needs to replace it with a new one to continue using the developer cartridge 100, which helps reduce the user's operating costs.

[0088] Even if the second housing 1b cannot be disassembled from the first housing 1a, as long as the amount of toner in the first toner chamber 10a is sufficient, by controlling the fourth transfer member 54 to be in the third or fifth position, neither the transfer member 24 nor the second stirring member 25 will be driven, and the toner in the second toner chamber 10b will not be supplied to the first toner chamber 10a, which also helps to reduce the load on the first transfer member 51.

Claims

1. A developing cartridge, wherein the developing cartridge is installed in an imaging device in a forward direction, characterized in that, The developing cartridge includes: The housing is used to hold the toner. A developing roller is rotatably disposed in a housing for carrying toner. The developing roller rotates about a rotation axis extending in a first direction along a first rotation direction. A developing drive element for driving the developing roller to rotate is provided at the longitudinal end of the developing roller. A powder feeding roller is rotatably disposed in the housing for supplying toner to the developing roller, and a powder feeding drive is provided at the longitudinal end of the powder feeding roller for driving the powder feeding roller to rotate. A driving force receiver for receiving driving force from an imaging device; and A drive transmission assembly is used to transmit the drive force received by the drive force receiver to the developing drive and the powder feeding drive. The box body includes a first shell and a second shell arranged along a second direction, the second direction intersecting the first direction, the first shell being located in front of the second shell along the second direction, the first shell forming a first toner cavity, and the second shell forming a second toner cavity. Along the third direction, a second lower side plate is provided below the second toner cavity. The second lower side plate is inclined relative to the second direction, and along the second direction, the front end of the second lower side plate is closer to the first toner cavity than the rear end. The first direction, the second direction and the third direction are perpendicular to each other. When the imaging device detects that the amount of toner in the first toner chamber is sufficient or insufficient, both the developing drive and the toner feeding drive are driven by the drive and transfer assembly to rotate along the first rotation direction.

2. The developing cartridge according to claim 1, characterized in that, The first toner chamber and the second toner chamber are directly connected.

3. The developing cartridge according to claim 1, characterized in that, The first housing has a first upper side plate and a first lower side plate located above and below the first toner chamber, respectively, and the second housing has a second upper side plate located above the second toner chamber. The first upper side plate and the first lower side plate are arranged opposite each other in a third direction, and the second upper side plate and the second lower side plate are arranged opposite each other in a third direction.

4. The developing cartridge according to claim 1, characterized in that, The housing is set to be opaque. The imaging device detects that there is sufficient toner in the first toner chamber. The driving force receiver is rotated in the second rotation direction by the driving force output by the imaging device. The developing roller and the toner feeding roller are both driven to rotate in the first rotation direction.

5. The developing cartridge according to claim 4, characterized in that, The drive transmission assembly includes a first transmission element, a second transmission element, and a third transmission element. The second transmission element is simultaneously connected to both the first and third transmission elements, and the third transmission element is simultaneously connected to both the developing drive element and the powder feeding drive element.

6. The developing cartridge according to claim 3, characterized in that, Both the first lower side plate and the second lower side plate are configured to be light-transmitting. When the imaging device detects that the amount of toner in the first toner cavity is insufficient, the driving force receiving element rotates along the first rotation direction, and both the developing roller and the toner feeding roller are driven to rotate along the first rotation direction.

7. The developing cartridge according to claim 6, characterized in that, The drive transmission assembly includes a first transmission element and a second transmission element, wherein the second transmission element is simultaneously combined with the first transmission element, the developing drive element, and the powder feeding drive element.

8. The developing cartridge according to claim 1, characterized in that, The housing has a toner receiving section for containing toner and a first stirring member rotatably disposed in the toner receiving section. The first stirring member is used to stir the toner and convey the toner toward the toner feeding roller.

9. The developing cartridge according to claim 1, characterized in that, The driving force receiver is configured to rotate in opposite directions, a first rotation direction and a second rotation direction; when the amount of toner in the first toner chamber is sufficient, the driving force from the imaging device drives the driving force receiver to rotate in the second rotation direction; when the amount of toner in the first toner chamber is insufficient, the driving force from the imaging device drives the driving force receiver to rotate in the first rotation direction.

10. The developing cartridge according to any one of claims 1 to 9, characterized in that, When viewed from the side of the developing cartridge where the driving force receiver is located along the first direction, the first rotation direction is counterclockwise.

Images