Developing cartridge

Abstract

Disclosed in the present invention is a developing cartridge. The developing cartridge can be detachably mounted to a drum unit. The developing cartridge comprises: a housing, used for containing a developer, the housing having a first side and a second side which are spaced apart in a first direction; a developing roller; an input gear, used for receiving a driving force outside the developing cartridge, the input gear being capable of rotating around the input gear axis extending in a first direction, and the input gear being located on the first side of the housing in the first direction; a chip, provided with an electrical contact surface, the electrical contact surface being located on the first side of the housing; and an electrode, the electrode comprising a power receiving part, wherein the power receiving part can be in contact with a power supply component outside the developing cartridge, and, in the first direction, the power receiving part being closer to the first side of the housing than to the second side of the housing. Compared with the prior art, the present invention can avoid impact on electrophotographic imaging devices caused by vibration generated by the developing cartridge during working, thus effectively improving the service life of electrophotographic imaging devices.

Description

A developing box Technical Field

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

[0002] The prior art discloses a developing box that can be installed together with a drum box to an electronic photographic imaging device, wherein the developing box includes a developing roller, a powder feeding roller and an electrode, wherein the electrode can receive power from the electronic photographic imaging device and transmit the power to the developing roller and the powder feeding roller to improve the imaging quality of the developing box; the drum box includes a photosensitive drum for forming an electrostatic latent image and a charger for supplying power to the photosensitive drum.

[0003] In the prior art, in order to meet the power requirements of the developing box and the drum box, the electronic photographic imaging device is provided with a developing power supply component and a drum power supply component for providing power to the developing box and the drum box respectively. The developing box is installed inside the electronic photographic imaging device through the support of the drum box, and during the imaging operation of the electronic photographic imaging device, multiple components of the developing box, such as the developing roller and the powder feeding roller, are in motion. After long-term use, the developing power supply component inside the electronic photographic imaging device and the electrodes on the developing box are easily damaged due to the impact of movement, which will reduce the imaging quality of the developing box and reduce the service life of the developing box and the electronic photographic imaging device. Summary of the Invention

[0004] Therefore, the present invention provides a developing cartridge to solve the above technical problems, which is mainly achieved through the following technical solutions:

[0005] A developing cartridge, which can be detachably mounted to a drum cartridge, comprising:

[0006] a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction;

[0007] a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction;

[0008] an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction;

[0009] a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing;

[0010] an electrode electrically connected to a component of the developer cartridge;

[0011] The electrode includes a power contact portion, and the power contact portion can be in contact with a power supply member outside the developing cartridge;

[0012] In the first direction, the power connection portion is closer to the first side of the housing than to the second side of the housing.

[0013] Furthermore, the electrode further includes a power supply portion and a grounding portion;

[0014] The power supply portion can be in contact with and electrically connected to a component of the developing cartridge, and the grounding portion is used to be in contact with a grounding member and / or a negative electrode of a power source on the outside of the developing cartridge;

[0015] The power supply portion and the ground portion may be electrically connected to the power receiving portion.

[0016] Further, in the first direction, the power supply portion is closer to the first side of the shell than to the second side of the shell.

[0017] Further, in the first direction, the grounding portion is closer to the first side of the housing than to the second side of the housing;

[0018] In a third direction intersecting the first direction and the second direction, the grounding portion is farther from the rotation axis of the developing roller than the rotation axis of the input gear.

[0019] Furthermore, the chip has a ground contact, and the ground portion can be electrically connected to the ground contact.

[0020] Further, in the second direction, the power receiving portion is farther from the rotation axis of the input gear than the rotation axis of the developing roller.

[0021] Furthermore, it further comprises a detected protrusion, wherein the detected protrusion is movable relative to the housing;

[0022] In the first direction, the detected protrusion is closer to the second side of the housing than to the first side of the housing.

[0023] Furthermore, it also includes a light-emitting element;

[0024] In the first direction, the light emitting element is closer to the second side of the housing than to the first side of the housing.

[0025] Furthermore, when the developing cartridge is mounted on the drum cartridge, the power contact portion may be in contact with a charger inside the drum cartridge.

[0026] Further, in the second direction, at least a portion of the power connection portion is farther away from the fourth side of the housing than the developing roller.

[0027] Furthermore, in the first direction, a maximum distance between the end of the input gear and the power connection portion is L, wherein 31 mm < L < 41 mm.

[0028] Furthermore, the power connection portion extends in the first direction, and a length of the power connection portion in the first direction is S, wherein 2 mm ≤ S ≤ 10 mm.

[0029] Furthermore, the power connection portion is movable relative to the housing between a first position and a second position.

[0030] The present invention also provides a developing box, wherein the developing box comprises:

[0031] a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction;

[0032] a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction;

[0033] an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction;

[0034] a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing;

[0035] an electrode electrically connected to a component of the developer cartridge;

[0036] The electrode includes a power contact portion, and the power contact portion can be in contact with a power supply member outside the developing cartridge;

[0037] The power connection portion is movable relative to the housing between a first position and a second position;

[0038] In the second direction, the first position is closer to the fourth side of the housing than the second position.

[0039] Furthermore, it also includes an elastic member for keeping the power connection part in the first position.

[0040] Further, in the second direction, the first position of the power connection portion is closer to the electrical contact surface than the second position of the power connection portion.

[0041] Furthermore, it also includes a force-bearing portion, which is used to receive the force outside the developing box to drive the electrode to move from the first position to the second position.

[0042] The present invention further provides a developing box, wherein the developing box comprises:

[0043] a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction;

[0044] a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction;

[0045] an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction;

[0046] a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing;

[0047] an electrode for receiving power from outside the developing cartridge and transmitting the power to a component of the developing cartridge;

[0048] The electrode includes a power connection portion, a grounding portion, and a voltage regulating unit, wherein the power connection portion can be in contact with a power supply component outside the developing cartridge, and the grounding portion is used to contact a grounding component outside the developing cartridge and / or a negative electrode of a power source;

[0049] In the first direction, the power connection portion is closer to the first side of the housing than to the second side of the housing;

[0050] The power connection part can be electrically connected to the grounding part and the voltage regulating unit;

[0051] When the grounding portion is electrically connected to a grounding member outside the developing cartridge and / or a negative electrode of a power source, the voltage regulating unit is configured to adjust a first voltage connected to the developing cartridge to a second voltage different from the first voltage.

[0052] Furthermore, the first voltage is greater than the second voltage.

[0053] Furthermore, it also includes a power supply portion, the power supply portion is used to contact and electrically connect with the components of the developing box;

[0054] a first impedance unit, electrically connected between the power receiving portion and the power supply portion;

[0055] The second impedance unit is electrically connected between the power supply part and the ground part.

[0056] Furthermore, the resistance value of the first impedance unit is R1, and the resistance value of the second impedance unit is R2; wherein, 5MΩ≤R1=R2≤10MΩ. Beneficial effects:

[0057] The developing box of the present invention, through the redesign of the power supply device, can receive power from the drum box and transmit it to the developing roller, the powder feeding roller and the powder discharge knife, thereby ensuring the imaging quality of the developing box; at the same time, the direct contact between the developing box and the electronic photographic imaging device is reduced, and the mutual collision between the developing box and the electronic photographic imaging device caused by the vibration generated by the developing box when working is avoided, thereby effectively improving the service life of the developing box and the electronic photographic imaging device; in addition, the power supply device on the electronic photographic imaging device that supplies power to the developing box can be eliminated, thereby reducing the production cost of the electronic photographic imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] FIG1 is a drum cartridge in the prior art;

[0059] FIG2 is a schematic diagram of the decomposition mechanism of the drum frame in the prior art drum box;

[0060] 3 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 1 of the present invention;

[0061] 4 is a schematic perspective view of the developing cartridge in Embodiment 1 of the present invention from another angle;

[0062] 5 is a schematic diagram of a partially exploded structure of the left end portion of the developing cartridge in Example 1 of the present invention;

[0063] FIG6 is a schematic diagram of the three-dimensional structure of the power supply assembly in Example 1 of the present invention;

[0064] FIG7 is a circuit diagram of the power supply assembly in embodiment 1 of the invention;

[0065] FIG8 is a schematic diagram of the three-dimensional structure of the connecting member in Example 1 of the present invention;

[0066] FIG9 is a schematic diagram of the three-dimensional structure of the power supply assembly in Example 2 of the present invention;

[0067] FIG10 is a circuit diagram of a power supply assembly in Example 2 of the invention;

[0068] 11 is a schematic diagram of the decomposition mechanism of the drum frame in the prior art drum cartridge;

[0069] 12 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 3 of the present invention;

[0070] 13 is a schematic perspective view of the developing cartridge from another angle in Example 3 of the present invention;

[0071] 14 is a top view of the developing cartridge in the up-down direction in Example 3 of the present invention;

[0072] 15 is a left side view of the developing cartridge in the left and right directions in Example 3 of the present invention;

[0073] 16 is an exploded schematic diagram of the left end portion of the developing cartridge in Example 3 of the present invention;

[0074] 17 is a cross-sectional view of the developing cartridge at AA in FIG. 14 of the present invention;

[0075] FIG18 is a schematic diagram of the three-dimensional structure of the circuit board in Example 3 of the present invention;

[0076] FIG19 is a schematic diagram of the three-dimensional structure of a circuit board, a connecting arm and multiple connecting members in Example 3 of the present invention;

[0077] 20 is a top view of the circuit board, the connecting arm and the plurality of connecting members in the vertical direction in Example 3 of the present invention;

[0078] FIG21 is a vertical cross-sectional view of the protective cover in Example 3 of the present invention;

[0079] 22 is a top view of the protective cover in the vertical direction in Example 3 of the present invention;

[0080] FIG23 is a schematic diagram of the three-dimensional structure of the connecting arm in Example 3 of the present invention;

[0081] FIG24 is a cross-sectional view of the power connection assembly at position BB in FIG14 of the present invention;

[0082] 25 is a sectional view of the drum cartridge in the left and right directions of the developing cartridge in a state where the developing cartridge is mounted to the drum cartridge in Example 3 of the present invention;

[0083] FIG26 is an enlarged view of point C in FIG25 of the present invention;

[0084] Figure 27 is a top view of the left end portion of the developing cartridge in the up-down direction in Example 3 of the present invention;

[0085] Figure 28 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 4 of the present invention;

[0086] 29 is a schematic perspective view of the developing cartridge from another angle in Example 4 of the present invention;

[0087] Figure 30 is a top view of the developing cartridge in the up-down direction in Example 4 of the present invention;

[0088] 31 is a left side view of the developing cartridge in the left and right directions in the state where the protective cover is hidden in Example 4 of the present invention;

[0089] Figure 32 is a partially exploded schematic diagram of the left end portion of the developing cartridge in Example 4 of the present invention;

[0090] FIG33 is a schematic diagram of the three-dimensional structure of a memory chip in Example 4 of the present invention;

[0091] 34 is a bottom view of the memory chip in the vertical direction in Example 4 of the present invention;

[0092] FIG35 is a schematic structural diagram of a circuit board at a certain angle in Example 4 of the present invention;

[0093] 36 is a left side view of the connecting arm and the drive assembly in the left and right directions in the first position state of the connecting arm in Example 4 of the present invention;

[0094] 37 is a left side view of the connecting arm and the drive assembly in the left and right directions in the second position state of the connecting arm in Example 4 of the present invention;

[0095] 38 is a schematic diagram of a light emitting member in a developing cartridge decomposed from the developing cartridge in Example 4 of the present invention;

[0096] Figure 39 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 5 of the present invention;

[0097] 40 is a schematic diagram of a protective cover and a chip holder in a developing cartridge decomposed from the developing cartridge in Example 5 of the present invention;

[0098] FIG41 is a schematic diagram of the three-dimensional structure of a memory chip in Example 5 of the present invention;

[0099] Figure 42 is a left side view of the developing cartridge in the left and right directions with the connecting arm in the second position in Example 5 of the present invention;

[0100] Figure 43 is a top view of the developing cartridge in the vertical direction with the connecting arm in the second position in Example 5 of the present invention;

[0101] Figure 44 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 6 of the present invention;

[0102] Figure 45 is a left side view of the developing cartridge in the left and right directions with the connecting arm in the second position in Example 6 of the present invention;

[0103] Figure 46 is a schematic diagram of the three-dimensional structure of the developing cartridge in Example 7 of the present invention;

[0104] Figure 47 is a left side view of the developing cartridge in the left-right direction in Example 7 of the present invention;

[0105] Figure 48 is a right side view of the developing cartridge in the left-right direction in Example 7 of the present invention;

[0106] Figure 49 is a bottom view of the developing cartridge in the up-down direction in Example 7 of the present invention;

[0107] Figure 50 is a top view of the developing cartridge in the up-down direction in Example 7 of the present invention;

[0108] Figure 51 is a left side view in the left and right directions of the developing cartridge in Example 7 of the present invention with the protective cover hidden;

[0109] Figure 52 is a schematic diagram of a protective cover and a gear train in a developing cartridge decomposed from the developing cartridge in Example 7 of the present invention;

[0110] Figure 53 is a schematic diagram of the protective cover and the power connection assembly in the developing cartridge decomposed from the developing cartridge in Example 7 of the present invention;

[0111] Figure 54 is a left view in the left and right directions of the developing box in Example 7 of the present invention when it is installed to the drum box. DETAILED DESCRIPTION

[0112] In order to make the purpose, technical solution and technical effect of the embodiment of the present invention clearer, the technical solution of the developer cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiment described is only a preferred embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0113] Example 1

[0114] As shown in Figure 1, a drum box 50 in the prior art is shown, and as shown in Figures 3-8, a developing box 100 in Example 1 of the present invention is shown. The developing box 100 is detachably installed in the drum box 50, and the two can be installed as a whole in an electronic photographic imaging device (hereinafter referred to as the "imaging device"). With the cooperation of the two and the imaging device, the printing task can be performed. Next, the drum box 50 in the prior art and the developing box 100 in the present invention will be described in detail with reference to specific drawings.

[0115] drum box

[0116] As shown in FIG1-2, a drum cartridge 50 in the prior art is shown. The drum cartridge 50 includes a drum frame 51. The drum frame 51 has a developer cartridge accommodating portion that accommodates the developer cartridge 100 and is constructed as a cavity. A photosensitive drum 52 is arranged on the front side of the developer cartridge accommodating portion. The left end of the photosensitive drum 52 is connected to a photosensitive drum gear 53. The photosensitive drum gear 53 can engage with a gear in the imaging device (not shown in the drawings) and receive a driving force to rotate, thereby driving the photosensitive drum 52 to rotate around a photosensitive drum axis extending in the left-right direction. The front-to-back direction intersects with the left-to-right direction. The drum cartridge 50 further includes a pushing assembly 55 disposed on either side of the drum cartridge 50. The pushing assembly 55 is elastic and generates an elastic pushing force when subjected to an external force. A locking member 54 is also disposed behind the pushing assembly 55 on the left side of the drum cartridge 50. The locking member 54 is not limited to being disposed behind the pushing assembly 55 on the left side of the drum cartridge 50. The locking member 54 can lock the developer cartridge 100 by blocking its movement, thereby stably retaining the developer cartridge 100 in the drum cartridge 50 and preventing it from accidentally falling out of the drum cartridge 50. The drum cartridge 50 further includes guides 56 disposed on either side of the drum cartridge 50 in the left and right directions. The guides 56 are used to guide the developer cartridge 100 to the correct position within the drum cartridge 50. In the front-to-back direction, the guides 56 are located between the photosensitive drum 52 and the pushing assembly 55. When viewed from the left and right directions, the pushing assembly 55, the guides 56, and the photosensitive drum 52 are generally arranged from back to front in the front-to-back direction.

[0117] The drum cartridge 50 further includes a charger 57 disposed vertically above the photosensitive drum 52. The charger 57 is a member for charging the photosensitive drum 52. In this embodiment, the charger 57 is configured as a scorotron charger separate from the photosensitive drum 52. The drum frame 51 is provided with an opening 58 for exposing at least a portion of the charger 57 to the outside of the developer cartridge 100; the opening 58 is located vertically above the charger 57.

[0118] Developer Box

[0119] As shown in Figures 3-5, a developing box 100 in Example 1 of the present invention is shown. The developing box 100 is detachably installed in the above-mentioned drum box 50. The developing box 100 includes a shell 101, and the shell 101 includes a powder bin 101a. The powder bin 101a can accommodate developer. The developing box 100 also includes a protective cover 101b detachably installed on the left side of the powder bin 101a. The protective cover 101b can cover the gear system of the developing box 100. The gear system of the developing box 100 includes but is not limited to a driving gear 111, a developing roller gear 112, a stirring frame gear 114, a powder feeding roller gear 113 and a transfer gear 116. The driving gear 111 is arranged at the left end of the shell 101, and the driving gear 111 can rotate around an axis A2 (Figure 15) extending in the left and right directions. The driving gear 111 includes a coupling portion 111a that can be coupled to the imaging device and receive driving force from the imaging device, and gear teeth 111b that are integrally arranged with the coupling portion 111a and can engage with the developing roller gear 112 and the powder feeding roller gear 113. The gear teeth 111b can drive the developing roller gear 112 and the powder feeding roller gear 113 to rotate, and the stirring frame gear 114 can receive the driving force of the driving gear 111 through the idler gear 115 and rotate. The developing box 100 also includes a stirring frame 102, a powder feeding roller 103 and a developing roller 104 supported on the shell 101, and the left ends thereof are respectively connected to a stirring frame gear 114, a powder feeding roller gear 113 and a developing roller gear 112. The stirring frame gear 114 drives the stirring frame 102 to rotate around the stirring frame axis extending in the left and right directions, the powder feeding roller gear 113 drives the powder feeding roller 103 to rotate around the powder feeding roller axis extending in the left and right directions, and the developing roller gear 112 drives the developing roller 104 to rotate around the axis A1 (Figure 15) extending in the left and right directions. The developing roller 104 is arranged at the front end of the shell 101 in the front-to-back direction. When the developing box 100 is installed in the drum box 50, the developing roller 104 of the developing box 100 maintains contact with the photosensitive drum 52 of the drum box 50. During the specific operation of the developing box 100, the rotating stirring frame 102 can stir the developer in the powder bin 101a and transport the developer to the powder feeding roller 103. The powder feeding roller 103 transports the developer to the developing roller 104 while rotating. Then, the developing roller 104 can transport the developer carried thereon to the photosensitive drum 52 through contact with the photosensitive drum 52 to develop the electrostatic latent image on the photosensitive drum 52; the developing box 100 includes a powder discharge knife 107 located between the powder feeding roller 103 and the developing roller 104 in the front-to-back direction. The powder discharge knife 107 is used to control the thickness of the developer attached to the developing roller 104.

[0120] The transfer gear 116 is engaged with the stirring frame gear 114 and can rotate along with the stirring frame gear 114. In this embodiment, the transfer gear 116 is constructed as a half-tooth gear. The developing cartridge 100 further includes a detected protrusion 117 provided on the upper right side of the housing 101. The detected protrusion 117 can move relative to the housing 101 according to the rotation of the transfer gear 116. In this embodiment, the detected protrusion 117 receives the driving force of the transfer gear 116 via a transmission rod 118 extending across the left and right sides of the developing cartridge 100 in the left-right direction. The detected protrusion 117 can move a detection body (not shown) inside the imaging device to transmit information about the capacity and age of the developing cartridge 100 to the imaging device. After the developer box 100 is installed on the imaging device, the detected protrusion 117 can move the detection body inside the imaging device to transmit the capacity and newness information of the developer box 100 to the imaging device. The imaging device also records the information of the developer box 100. When the developer in the developer box 100 is about to be consumed, the imaging device can prompt the user to replace the new developer box 100 through an operation panel or indicator light.

[0121] The developer cartridge 100 is further provided with a locked portion 106 on the left side in the left-right direction, which cooperates with the locking portion 54 in the drum cartridge 50. When the developer cartridge 100 is installed in the drum cartridge 50, the locked portion 106 cooperates with the locking portion 54 on the drum cartridge 50, thereby stably holding the developer cartridge 100 in the drum cartridge 50 and preventing the developer cartridge 100 from accidentally falling out of the drum cartridge 50. The developer cartridge 100 is provided with two forced-pushing protrusions 109 on the rear side in the front-to-back direction. The two forced-pushing protrusions 109 are respectively extended rearward from the rear side of the developer cartridge 100 on both sides in the left-to-right direction. When the developer cartridge 100 is installed in the drum cartridge 50, the forced-pushing protrusions 109 can receive the forced-pushing force provided by the forced-pushing portion 55 in the front-to-back direction to move the developer roller 104 toward the photosensitive drum 52, so that the developer roller 104 maintains close contact with the photosensitive drum 52. The developer box 100 also includes a guided portion 110 on both sides in the left and right directions. When viewed along the left and right directions, at least a portion of the guided portion 110 overlaps with the developer roller shaft 104a; the guided portion 110 is constructed as a columnar protrusion extending in the left and right directions; during the installation of the developer box 100 into the drum box 50, the guided portion 110 cooperates with the guide portion 56 in the drum box to enable the developer box 100 to be installed to the correct position in the drum box 50; in other embodiments of the present invention, the guided portion 110 can also be formed by the developer roller shaft 104a extending out of the shell 101 in the left and right directions.

[0122] The developing box 100 also includes a chip 108 for storing information about the developing box 100. The chip 108 includes an electrical contact surface 108a and a storage portion (not shown). The electrical contact surface 108a can be in contact with an electrical contact point (not shown) inside the imaging device. After the developing box 100 is installed in the imaging device, the developing box 100 can establish a communication connection with the imaging device to facilitate the imaging device to read the information of the developing box 100, thereby enabling the imaging device to identify whether the installed developing box 100 is compatible.

[0123] In order to ensure that the developer can be transported more smoothly from the inside of the shell 110 to the photosensitive drum 52, the developer box 100 is also provided with a power supply component 120 that can supply power to at least one of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107. The power supply component 120 can receive power from the outside of the developer box 100 and be electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107 to ensure that the developer can be transported stably.

[0124] As shown in Figures 6-7, the electrodes in the developer cartridge 100 differ from those in the prior art. The power supply assembly 120, serving as the electrode, includes a power terminal 121 to provide electrical connection to the outside of the developer cartridge 100 and thereby power the developer cartridge 100. The power supply assembly 120 is located on the left side of the housing 101 in the left-right direction and near the front end of the housing 101 in the front-to-back direction. Specifically, the power supply assembly 120 is positioned on the top left side of the developer cartridge 100, effectively utilizing the top space of the developer cartridge 100, making the structure of the developer cartridge 100 more compact and the layout of the developer cartridge 100 more rational. This facilitates miniaturization along the length of the developer cartridge 100.

[0125] Specifically, the power supply assembly 120 includes but is not limited to a power connection terminal 121, a resistor 122 and a power supply terminal 123; when the developing box 100 is installed on the drum box 50, the power connection terminal 121 can be connected to the charger 57 on the drum box 50 as a power supply component, and the power supply assembly 120 is closer to the left side of the shell 101 relative to the right side of the shell 101 in the left-right direction, that is, the power supply assembly 120 is close to the left side of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107 in the left-right direction, and is electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107, one end of the resistor 122 is electrically connected to the power connection terminal 121, and the other end of the resistor 122 is electrically connected to the power supply terminal 123; in this embodiment, the power supply terminal 123 is constructed as a support plate for the developing roller 104 and the powder feeding roller 102, and the power supply terminal 123 is electrically connected to the developing roller 104 and the powder feeding roller 103 respectively.

[0126] The power supply terminal 123 is made of a conductive material, preferably a conductive resin. The power supply terminal 123 includes a developing bearing 123a for supporting the developing roller 104 and a powder feeding bearing 123b for supporting the powder feeding roller 103. The developing bearing 123a and the powder feeding bearing 123b are in contact with and electrically connected to the developing roller shaft 104a of the developing roller 104 and the powder feeding roller shaft 103a of the powder feeding roller 103, respectively.

[0127] As shown in FIG. 6 , the resistor 122 is used to reduce the voltage of the power supply end 123 . Specifically, the resistor 122 is used to reduce the voltage of the power supply end 123 to a voltage suitable for the power supply end 123 .

[0128] As shown in Figures 6 and 8, when the developer cartridge 100 is mounted on the drum cartridge 50, the power terminal 121 can contact the charger 57 in the drum cartridge 50. To achieve a stable connection between the power terminal 121 in the developer cartridge 100 and the drum cartridge 50, the power supply assembly 120 further includes a connecting member 124 disposed on the power terminal 121. The power terminal 121 extends below a side of the connecting member 124 in the front-to-back direction away from the power supply terminal 123 and is exposed on the outside of the connecting member 124. The connecting member 124 is made of a conductive material. Preferably, the power terminal 121 is made of metal iron or metal copper; the power terminal 121 can be specifically constructed as an iron wire.

[0129] Furthermore, the various components in the power supply assembly 120 are connected by iron wire or flexible conductive enameled wire.

[0130] As shown in Figure 8, the connecting member 124 includes a limiting portion 124a and a snap-fit ​​portion 124b. The limiting portion 124a cooperates with the opening 58 on the drum box 50 to limit the movement of the connecting member 124 and the drum box 50 in the front-to-back and left-to-right directions. When the developing box 100 and the drum box 50 are engaged, the limiting portion 124a of the connecting member 124 is inserted into the interior of the opening 58; the snap-fit ​​portion 124b is constructed as an elastic buckle, but is not limited to this. The snap-fit ​​portion 124b can also be constructed as other structures to prevent the connecting member 124 from falling off the drum box 50. In this embodiment, the snap-fit ​​portion 124b is constructed as an elastic buckle as an example. When the connecting member 124 is engaged with the drum box 50, the snap-fit ​​portion 124b cooperates with an edge of the drum frame 51 in the drum box 50. That is, the connecting member 124 is connected to the drum frame 51 of the drum box 50 through the snap-fit ​​portion 124b.

[0131] Furthermore, the power connection end 121 extends to below the limiting portion 124 a , that is, the power connection end 121 is located below the limiting portion 124 a in the up-down direction.

[0132] When the developing box 100 is in use, the user installs the developing box 100 in the drum frame 51 of the drum box 50, and then the user inserts the limiting portion 124a of the connecting member 124 into the opening 58 of the drum box 50. At this time, the power receiving end 121 enters the interior of the opening 58 together with the limiting portion 124a and contacts the charging device 57 located below the opening 58. The power receiving end 121 contacts the charging device 57 in the drum box 50 so that the power receiving end 121 can receive power from the charging device 57. After the power receiving end 121 contacts the charging device 57, the connecting member 124 is clamped on the drum frame 51 of the drum box 50 through the snapping portion 124 constructed as an elastic buckle to prevent the connecting member 124 from detaching from the drum box 50, thereby preventing the power receiving end 121 from detaching from the charging device 57, thereby ensuring the stability of the power receiving end 121 and the charging device 57.

[0133] Example 2

[0134] As shown in Figures 9-10, a developing box according to Example 2 of the present invention is shown. The similarities with the above-mentioned Example 1 are not repeated in this embodiment. The difference between this embodiment and the above-mentioned Example 1 is that the developing box 100 includes a power supply component 130 that is different from that in the above-mentioned Example 1. Specifically, the power supply component 130 also includes but is not limited to a power connection terminal 131, a first resistor 132, a second resistor 133, a power supply terminal 134, and a ground terminal 135. The connections between the various components are shown in Figure 10. The first end of the first resistor 132 is electrically connected to the power connection terminal 131, the second end of the second resistor 132 is electrically connected to the power supply terminal 134, the first end of the second resistor 133 is electrically connected to the second end of the first resistor 132 and the power supply terminal 134, and the second end of the second resistor 133 is electrically connected to the ground terminal 135.

[0135] After the developer cartridge 100 is installed in the drum cartridge 50, the power terminal 131 can contact the charger 57 of the drum cartridge 50, and the ground terminal 135 can contact the photosensitive drum shaft 52a of the photosensitive drum 52 in the drum cartridge 50. When the drum cartridge 50 is installed in the imaging device, the photosensitive drum shaft 52a is connected to the ground circuit in the imaging device. Specifically, the ground terminal 135 is configured as a conductive ring. Preferably, the ground terminal 135 is configured as a metal conductive ring; the inner diameter of the conductive ring is larger than the outer diameter of the photosensitive drum shaft 52a, and the thickness of the conductive ring is less than 1.5 mm. During use, the conductive ring is sleeved onto the outer surface of one end of the photosensitive drum shaft 52a in the drum cartridge 50.

[0136] As shown in FIG. 10 , the second resistor 133 is connected in parallel with the power supply terminal 134 and each power receiving component of the developing cartridge 100 .

[0137] Example 3

[0138] As shown in Figures 12-27, a developing cartridge according to Example 3 of the present invention is shown. The difference between this embodiment and the above-mentioned embodiments 1-2 is that a power supply assembly 200 different from that in the above-mentioned embodiments 1-2 is provided in the developing cartridge of this embodiment. Specifically, Figure 11 shows a drum cartridge 50 that cooperates with a developing cartridge 100 in the prior art, and Figures 12-27 show the developing cartridge 100 of this embodiment. The drum cartridge 50 can be installed together with the developing cartridge 100 in an imaging device of the prior art to perform imaging operations. The imaging device can be an electronic laser printer. The interior of the imaging device is provided with a metal frame 11 (Figure 25) that is electrically connected to the neutral line or ground line of the power supply in the imaging device.

[0139] As shown in Figure 11, the drum cartridge 50 includes a drum frame 51 having a cavity-like developer cartridge housing portion for housing the developer cartridge 100. A photosensitive drum 52 is disposed in front of the developer cartridge housing portion. A photosensitive drum gear 53 is connected to the left end of the photosensitive drum 52. The photosensitive drum gear 53 engages with a gear (not shown) in the imaging device to receive a driving force and rotate, thereby driving the photosensitive drum 52 about a drum axis extending in a left-right direction, with the front-to-back direction intersecting the left-to-right direction. The drum cartridge 50 also includes a charger 57 disposed vertically above the photosensitive drum 52. The charger 57 is a component that charges the photosensitive drum 52. In this embodiment, the charger 57 is a corona charger. The drum frame 51 is provided with an opening 58 for exposing at least a portion of the charger 57 to the outside; the opening 58 is located vertically above the charger 57. The developer cartridge accommodating portion is further provided with guide portions 56 on both sides in the left-right direction, and the guide portions 56 are used to guide the developer cartridge 100 to move to a correct position in the developer cartridge accommodating portion.

[0140] Figures 12-18 show a developing box 100 of the present invention. The parts that are the same as those in the above-mentioned embodiments 1-2 are not repeated here. In order to ensure that the developer is smoothly transported from the inside of the shell 110 to the photosensitive drum 52, the developing box 100 is also provided with a power connection component, which includes a power connection end, a power supply end and a step-down circuit. The power connection end is connected to the charger 57 in the drum box 50 to receive power from the drum box 50, and transmits it to the developer conveying component such as the developing box 100 through the power supply end. That is to say, compared with the prior art, the developing box 100 in the present invention no longer has an electrode that is directly electrically contacted with the imaging device. In the present invention, the electrode of the developing box 100 receives power from the drum box 50 by being electrically connected to the drum box 50, thereby realizing smooth transportation of the developer; specifically, the developing box 100 includes The power connection component 200 includes an electrode, which is used to supply power to at least one of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107. The power connection component 200 is arranged on the top of the shell 101 in the up-down direction, and is closer to the left side of the shell 101 relative to the right side of the shell 101 in the left-right direction. The power connection component 200 is closer to the front side of the shell 101 relative to the rear side of the shell 101 in the front-to-back direction. Specifically, the power connection component 200 is installed on the top of the powder bin 101a and is close to the left side in the left-right direction; the power connection component 200 can receive power from the outside of the developer box 100 and be electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder discharge knife 107, so as to make the transportation of the developer in the developer box 100 smoother.

[0141] Specifically, as shown in Figures 16-24, the power connection assembly 200 includes a circuit board 210, a connecting arm 220, a protective cover 230, and multiple connectors. The connectors include but are not limited to a first connector 211 for connecting the circuit board 210 and the connecting plate 220, a second connector 241 for connecting the powder knife 107 and the circuit board 210, and a third connector 251 for connecting the circuit board 210 and the metal frame 11. The protective cover 230 is used to cover at least a portion of the above-mentioned circuit board 210 and multiple connectors to protect the circuit board 210 and the above-mentioned connectors. To prevent the occurrence of short circuits, the protective cover 230 and the powder bin 101a are made of insulating material. The connecting arm 220 is used to receive an external power source. In this embodiment, the connecting arm 220 can contact and form an electrical connection with the charging device 57 of the drum cartridge 50 to receive power from the charging device 57 in the drum cartridge 50. The connecting arm 220 extends in the front-to-back direction and is connected to the front side of the protective cover 230 in the front-to-back direction. The connecting arm 220 is made of a conductive material to facilitate electrical connection. Preferably, the connecting arm 220 is made of a conductive resin material.

[0142] As shown in Figure 18, the circuit board 210 includes multiple resistors and multiple connecting contacts. In this embodiment, the circuit board 210 includes two resistors and three connecting contacts, namely, a first resistor 211, a second resistor 212, an electrical contact 213, a power supply contact 214 and a ground contact 215. The first resistor 211 and the second resistor 212 are connected in series, the second end of the first resistor 211 is electrically connected to the first end of the second resistor 212, the second end of the first resistor 211 and the first end of the second resistor 212 serve as a common connection end, the electrical contact 213 is electrically connected to the first end of the first resistor 211, the power supply contact 214 is electrically connected to the common connection end, and the ground contact 215 is electrically connected to the second end of the second resistor 212.

[0143] Furthermore, the resistance value R1 of the first resistor 211 and the resistance value R2 of the second resistor 212 are the same, and the value range of R1 and R2 is 5MΩ≤R1=R2≤10MΩ. Preferably, in this embodiment, the resistance value of the first resistor 211 and the second resistor 212 are both 5MΩ. When the circuit board 210 is electrically connected, the voltage at the power contact 214 is reduced to approximately 1 / 2 of the voltage at the contact contact 213 due to the action of the first resistor 211 and the second resistor 212. The contact contact 213 is electrically connected to the connecting arm 220 via the first connecting member 221. The power contact 214 is electrically connected to at least one of the developing roller 104, the powder feed roller 103, and the powder discharge knife 107. Preferably, in this embodiment, the powder discharge knife 107 is made of a conductive material, and the power contact 214 is electrically connected to the powder discharge knife 107. A bracket for supporting the developing roller 104 and the powder feed roller 103 is provided on the first side of the housing 101. Specifically, the bracket rotatably supports the left end of the developing roller 104 and the powder feed roller 103. The bracket is made of a conductive material, preferably a conductive resin material. The powder blade 107 is electrically connected to the bracket, which is in turn electrically connected to the developing roller 104 and the powder feed roller 103, respectively, thereby enabling the developer cartridge 100 to supply power to at least one of the developing roller 104, the powder feed roller 103, and the powder blade 107.

[0144] Furthermore, as shown in Figures 19-20, the first connector 221, the second connector 241, and the third connector 251 are all configured as elastic conductive members. That is, the connection between each connector and the circuit board 210 is an elastic connection, thereby improving the stability of the connection between each connector and the circuit board 210. Specifically, the first connector 221 is configured as a torsion spring and includes a first end 221a and a second end 221b. The first end 221a is connected to the power contact 213 of the circuit board 210, and the second end 221b is connected to the connecting arm 220, so that the circuit board 210 receives external power through the connecting arm 220. The connecting arm 220 is provided with a groove 221c (Figure 23), and at least a portion of the second end 221b is engaged within the groove 221c to ensure more stable contact between the connecting arm 220 and the second end 221b. Both ends of the second connecting member 241 are constructed as spring structures to ensure more stable contact between the second connecting member 241 and the circuit board 210 and the powder discharge blade 107. The second connecting member 241 includes a first connecting end 241a and a second connecting end 241b. The first connecting end 214a is connected to the power supply contact 214 of the circuit board 210, and the second connecting end 214b is electrically connected to the developer conveying member in the developer cartridge 100. In this embodiment, the second connecting end 241b is connected to the powder discharge blade 107. In other embodiments of the present invention, the second connecting end 241b can also be electrically connected to the developer roller 104 or the powder feed roller 103. Alternatively, the second connecting end 241b can be electrically connected to at least one of the powder discharge blade 107, the developer roller 104, and the powder feed roller 103. The contact between at least one of these three components and the developer causes the developer to be charged, thereby facilitating smoother developer conveying. The third connecting member 251 is located farther from the rotation axis A1 of the developing roller 104 in the vertical direction than the rotation axis A2 of the driving gear 111. Both ends of the third connecting member 251 are constructed as spring structures to ensure more stable contact between the third connecting member 251, the circuit board 210, and the metal frame 11. The third connecting member 251 includes a third connecting end 251a and a fourth connecting end 251b. The third connecting end 251a contacts the ground contact 215 of the circuit board 210, and at least a portion of the fourth connecting end 251b is exposed at the top of the developing cartridge 100 and contacts the metal frame 11 of the imaging device. The metal frame 11 inside the imaging device is electrically connected to the ground protection circuit of the imaging device to prevent dangers caused by leakage in the imaging device. In other words, the ground contact 215 of the circuit board 210 is electrically connected to the ground protection circuit of the imaging device, thereby improving the safety of the developing cartridge 100.

[0145] As shown in Figures 21-22, the protective cover 230 is provided with a housing chamber 231. In this embodiment, the housing chamber 231 is used to accommodate the circuit board 210. In other embodiments of the present invention, the housing chamber 231 can also be used to accommodate multiple connected electronic components. These connected electronic components have similar functions to the circuit board 210 and will not be described in detail here. The circuit board 210 is removably mounted in the housing chamber 231 using elastic clips 231a or screws. In this embodiment, elastic clips 231a are provided on both sides of the housing chamber 231 in the front-to-back direction and / or the left-to-right direction to removably mount the circuit board 231 within the housing chamber 231. The top of the protective cover 230 is also provided with a through hole 232 for exposing the third connecting member 251 to the top of the developer cartridge 100. The through hole 232 is located on the side of the protective cover 230 in the front-to-back direction away from the developer roller 104. At least a portion of the third connecting member 251 is exposed to the top of the protective cover 230 through the through hole 232. The protective cover 230 is also provided with a screw hole 233 for connecting the protective cover 230 to the shell 101. In this embodiment, the protective cover 230 is fixed to the top of the shell 101 in the up and down directions by means of screws. In other embodiments of the present invention, the protective cover 230 can also be fixedly connected to the top of the shell 101 by means of elastic buckles or the like. This is not a limitation. It is only necessary to ensure that the protective cover 230 is fixedly connected to the top of the shell 101.

[0146] As shown in Figure 23, the connecting arm 220 is movably connected to the front end of the protective cover 230 in the front-to-back direction. A connecting shaft 220a is provided at one end of the connecting arm 220. The connecting arm 220 can rotate around the axis of the connecting shaft 220a extending in the left-right direction. The other end of the connecting arm 220 is provided with an electric contact portion 220b. The electric contact portion 220b is constructed as a protrusion extending outward from the bottom outer surface of the connecting arm 220. The electric contact portion 220b is located at the front end of the connecting arm 220 in the front-to-back direction. When the developing cartridge 100 is installed on the drum cartridge 50, , the electrical contact portion 220b contacts the charger 57 inside the drum cartridge 50 to receive electricity from the drum cartridge 50; the first connecting member 221 is constructed as a torsion spring, and the first connecting member 221 is connected between the connecting arm 220 and the circuit board 210, and is used to maintain the electrical connection between the connecting arm 220 and the circuit board 210 while keeping the connecting arm 220 in a position close to the shell 101 in the up and down directions, so that when the developing cartridge 100 is installed to the drum cartridge 50, the electrical contact portion 220b is located inside the opening 58 to contact the charger 57, so that the developing cartridge 100 can receive electricity from the drum cartridge 50.

[0147] Furthermore, as shown in Figures 22-24, the protective cover 230 also includes a connecting hole 234 and a receiving groove 234a for accommodating the connecting arm 220. The connecting arm 220 is rotatably installed on the front end of the protective cover 230 through the cooperation of the connecting shaft 220a and the connecting hole 234. At least a portion of the connecting arm 220 is located inside the receiving groove 234a. The connecting arm 220 can move between a first position and a second position relative to the shell 101 around the axis of the connecting shaft 220a. The first position is a position where the developing box 100 can be conveniently installed inside the drum box 50. The second position is the position of the connecting arm 220 when the developing box 100 is connected to the drum box 50. In the second position of the connecting arm 220, the developing box 100 is electrically connected to the drum box 50. The first connecting member 221 is used to maintain the connecting arm 220 in the second position. The connecting arm 220 has a limiting slot 220d at its rear end in the front-to-back direction. The accommodating slot 234a has a limiting protrusion 234b at its rear end in the front-to-back direction that cooperates with the limiting slot 220d to limit the left-right movement of the connecting arm 220. As shown in Figure 24, the connecting arm 220 (a) in the figure shows the connecting arm 220 in the first position, and the connecting arm 220 (b) in the figure shows the connecting arm 220 in the second position.

[0148] The following further describes the process of electrically connecting the developer cartridge 100 to the drum cartridge 50. A guide surface 220c (Figure 23) is provided at the front end of the connecting arm 220 in the front-to-back direction. As shown in Figures 23-26, when the developer cartridge 100 is installed on the drum cartridge 50, the user applies a thrust to the developer cartridge 100 to push the developer cartridge 100 to move from back to front along the guide portion 56 of the drum cartridge 50. During the movement of the developer cartridge 100, the guide surface 220c may abut against the drum frame 51 of the drum cartridge 50. The developer cartridge 100 continues to move forward along the guide portion 56 under the continuous action of the thrust, and the guide surface 220c is subjected to the abutment force of the drum frame 51 and is relatively moved relative to the shell. 101 moves from the second position to the first position, and the connecting arm 220 in the first position can prevent interference between the connecting arm 220 and the drum frame 51 to ensure that the developing box 100 can be smoothly installed inside the drum box 51; after the developing box 100 is installed to the drum box 50, under the action of the first connecting member 221, the connecting arm 220 moves from the first position to the second position, and in the process of moving the connecting arm 220, the electrical contact portion 220b of the connecting arm 220 enters the opening 58 of the drum box 50 and contacts the charger 57, thereby establishing an electrical connection between the developing box 100 and the drum box 50, so that the developing box 100 can receive power from the drum box 50.

[0149] As shown in Figures 14-15 and Figures 25-27, the electrical contact portion 220b is closer to the first side of the shell 101 relative to the second side of the shell 101 in the left-right direction, the electrical contact portion 220b is located on the right side of the protective cover 103 in the left-right direction, and the electrical contact portion 220b is located on the right side of the electrical contact surface 108a in the left-right direction. Furthermore, the electrical contact portion 220b and the electrical contact surface 108a are spaced apart in the front-to-back direction, and the electrical contact portion 220b is spaced apart in the front-to-back direction than the rotation of the developing roller 104. The rotation axis A1 is farther away from the rotation axis A2 of the driving gear 111 to prevent interference between the electric contact surface 108a and the electric contact portion 220b. The connecting arm 220 extends from the back to the front of the housing 101 in the front-to-back direction. The electric contact portion 220b is located in front of the developing roller 104 in the front-to-back direction. After the developing box 100 is installed to the drum box 50, the connecting arm 220 can extend to the top of the charging device 57 in the drum box 50 to facilitate the contact between the electric contact portion 220b and the charging device 57 in the drum box 50.

[0150] Furthermore, the electrical connection assembly 200 is positioned near the left side of the developer cartridge 100 in the left-right direction. As shown in FIG27 , the connecting arm 220 further includes a rod 220d for connecting the connecting shaft 220a and the electrical contact portion 220b. The distance between the right side wall of the rod 220d and the leftmost end of the drive gear 111 is L1, which should be less than or equal to 50 mm to prevent the rod 220d from blocking the laser path of the imaging device and causing imaging defects. L1 should be greater than or equal to 20 mm so that the electrical contact portion 220b of the connecting arm 220 can easily enter the interior of the opening 58 to achieve electrical connection. A clearance surface 230a is provided on the right side of the protective cover 230 in the front-to-back direction near the developer roller 104. The distance between the clearance surface 230a and the leftmost end of the drive gear 111 is L2, which should be less than or equal to 53 mm to prevent the protective cover 230 from blocking the laser path of the imaging device and causing imaging defects. Specifically, in this embodiment, L1 is set to 35 mm and L2 is set to 49 mm. The electric contact portion 220b on the connecting arm 220 is constructed as a triangular prism extending in the left-right direction, and the length of 220b in the left-right direction is L3. In order to enable the electric contact portion 220b to smoothly enter the interior of the opening 58 and have sufficient contact area with the charger 57, the value range of L3 is: 2mm≤L3<10mm; the distance between the rightmost end of the electric contact portion 220b and the leftmost end of the driving gear 111 is L4. In order to make the electric contact portion 220b located in the projection range of the opening 58 in the up and down directions when the developing box 100 is installed to the drum box 50, the value range of L4 should be: 31mm<L4<41mm; specifically, in this embodiment, L3 is set to 8mm, and L2 is set to 40mm.

[0151] Example 4:

[0152] Figures 28-38 illustrate a developer cartridge according to Example 4 of the present invention. Similarities with Examples 1-3 are not repeated in this embodiment. This embodiment differs from Examples 1-3 in that the grounding arrangement of the developer cartridge 100 is different. Specifically, the developer cartridge 100 includes a memory chip 308 for storing information about the developer cartridge 100.

[0153] As shown in Figures 28-29, the memory chip 308 has a plurality of electrical contact surfaces 309 arranged in a left-right direction. The electrical contact surfaces 309 are made of a conductive metal. When the developer cartridge 100 is mounted on the imaging device, the electrical contact surfaces 309 come into contact with electrical contacts on the imaging device, thereby establishing electrical continuity between the electrical terminals and the electrical contact surfaces 309. As a result, the imaging device can at least either read information from the memory chip 308 or write information to the memory chip 308.

[0154] The plurality of electrical contact surfaces 309 include an SIO (data) terminal 309A, a GND (ground) terminal 309B, an SCK (serial clock) terminal 309C, and a PWR (power) terminal 291D. Specifically, the plurality of electrical contact surfaces 309 include at least a GND (ground) terminal 309B. When the developer cartridge 100 is mounted on the imaging device, the GND (ground) terminal 309B can be electrically connected to the negative pole of the power supply in the imaging device or to the ground circuit in the imaging device. The storage chip 308 also includes a second electrical contact portion 308b that is different from the plurality of electrical contact surfaces 309. The second electrical contact portion 308b is electrically connected to the GND (ground) terminal 309B in the plurality of electrical contact surfaces 309. Therefore, the second electrical contact portion 308b is electrically connected to the GND (ground) terminal 309B.

[0155] To ensure smooth developer transport within the developer cartridge 100, the developer cartridge 100 is provided with a power connection assembly 300. The power connection assembly 300 includes a power connection terminal, a power supply terminal, and a step-down circuit. The power connection assembly 300 includes a circuit board 310, a connecting arm 320, a protective cover 330, and multiple connectors. Similar to the aforementioned embodiment 3, the connectors include, but are not limited to, a first connector 321 for connecting the circuit board 310 to the connecting plate 320, and a second connector 341 for connecting the powder blade 107 to the circuit board 310.

[0156] As shown in FIG32 , in this embodiment, the circuit board 310 is not electrically connected to the metal frame inside the imaging device. Therefore, in this embodiment, the connector further includes a third connector 351 for electrically connecting the circuit board 310 to the second electrical contact portion 308 b in the memory chip 308 .

[0157] The first connector 321, the second connector 341, and the third connector 351 are all made of a conductive material. Preferably, the first connector 321, the second connector 341, and the third connector 351 are all made of a conductive metal material. The first connector 321 and the second connector 341 are similar to those in the third embodiment above and are not described in detail herein. The third connector 351 has a first end 351a and a second end 351b. The first end 351a of the third connector 351 is electrically connected to the circuit board 310, and the second end 351b of the third connector 351 is electrically connected to the memory chip 308.

[0158] As shown in Figures 32-35, similar to the above embodiment 3, the circuit board 310 includes a first resistor 311, a second resistor 312, an electrical contact 313, a power supply contact 314 and a ground contact 315. The third connecting member 351 extends from the top of the developing box 100 to the bottom of the developing box 100 in the up and down direction, and the first end 351a of the third connecting member 351 is electrically connected to the ground contact 315 of the circuit board 310, and the second end 351b of the third connecting member 351 is electrically connected to the second contact portion 310 of the memory chip 308. Therefore, the ground contact 315 of the circuit board 310 is electrically conductive with the second electrical contact portion 308b of the memory chip 308, and further, the ground contact 315 of the circuit board 310 is electrically conductive with the GND (ground) terminal 309B of the memory chip 308. That is to say, in the embodiment, the developing box 100 realizes the grounding setting of the power connection component 300 in the developing box 100 by electrically connecting the power connection component 300 to the memory chip 308, which has a simpler structure and is more conducive to the miniaturization of the developing box 100. Furthermore, the power connection assembly 300 realizes a voltage reduction function. Under the action of the power provided by the power connection assembly 300 , the developer inside the developing cartridge 100 is smoothly transported to the photosensitive drum 52 of the drum cartridge 50 , realizing the developing function of the developing cartridge 100 .

[0159] Specifically, as shown in Figures 31-32 and Figures 36-37, the connecting arm 320 can move between a first position and a second position relative to the housing 101. The first position of the connecting arm 320 is a folded position of the connecting arm 320. When the connecting arm 320 is in the first position, the connecting arm 320 is folded above the housing 101, thereby making it easier for the manufacturer of the developer cartridge 100 to package and transport the developer cartridge 100. The second position of the connecting arm 320 is an unfolded position of the connecting arm 320. When the connecting arm 320 is in the second position, the connecting arm 320 contacts the charger in the drum cartridge, thereby achieving electrical conduction between the connecting arm 320 and the drum cartridge, thereby achieving power connection of the developer cartridge 100.

[0160] In order to realize the movement of the connecting arm 320 between the first position and the second position, the developing box 100 is also provided with a driving assembly for driving the connecting arm 320 to move from the first position to the second position. During the process of installing the developing box 100 to the drum box, at least a part of the driving assembly can abut against the drum box to drive the connecting arm 320 to move from the first position to the second position. The driving assembly is arranged on the left side of the shell 101 in the left-right direction, and the driving assembly is located between the shell 101a and the left cover 101b in the left-right direction.

[0161] Furthermore, the connecting arm 320 includes a shaft 320b and a gear portion 320c coaxially disposed with the shaft 320b. The shaft 320b extends in the left-right direction, and the connecting arm 320 is rotatable about the shaft 320b between a first position and a second position. The gear portion 320c is configured as a driven portion for receiving a driving force to drive the connecting arm 320 from the first position to the second position. The developer cartridge 100 is also provided with a reset member for applying a restoring force to the connecting arm 320, thereby moving the connecting arm 320 from the second position to the first position. In this embodiment, the reset member is configured as a first connecting member 321, which is configured as a conductive torsion spring.

[0162] The driving assembly includes at least but is not limited to a force-bearing member and a force-applying member. As shown in Figure 31 and Figures 36-37, in this embodiment, the developer box 100 includes a force-bearing rod 361 and a force-applying member 362. The force-bearing rod 361 and the force-applying member 362 are both arranged on the left side of the shell 101 and can move between a first position and a second position relative to the shell 101. When the force-bearing rod 361 is in the first position, the first end 361a of the force-bearing rod 361 is located at the bottom of the shell 101 in the vertical direction. When the developer box 100 is installed on the drum box, under the action of the downward thrust applied by the user to the developer box 100, the first end 361a of the force-bearing rod 361 can abut against the drum frame 51 in the drum box 50. At this time, the drum frame 51 generates a reaction force on the force-bearing rod 361, thereby driving the force-bearing rod 361 to move from the first position to the second position. The force-applying member 362 can move according to the movement of the force-bearing rod 361. The force-applying member 362 is used to drive the connecting arm 320 to move from the first position to the second position. In the up and down directions, the force-applying member 362 is closer to the top of the developing box 100 than the force-bearing member 361. In the left and right directions, the force-applying member 362 is closer to the left side of the shell 101 than the electrical contact part 320a on the connecting arm 320.

[0163] Furthermore, the force-applying member 362 can move from the first position to the second position in response to the movement of the force-receiving member 361. The force-applying member 362 includes at least a tooth portion connected to the connecting arm 320 to drive the connecting arm 320 to move from the first position to the second position. In this embodiment, the force-applying member 362 is configured as a rack, having a first tooth portion 362a and a second tooth portion 362b. The first tooth portion 362a of the force-applying member 362 is configured to receive the driving force of the force-receiving member 361 and move relative to the housing 101 in the front-to-back direction. The second tooth portion 362b is configured to connect to the gear portion 320c of the connecting arm 320 to drive the connecting arm 320 to move from the first position to the second position.

[0164] Furthermore, the developer cartridge 100 further includes a transmission member 363 connected between the force-bearing member 361 and the force-applying member 362. The transmission member 363 includes a force-bearing portion 363a connected to the second end 361b of the force-bearing member 361a, and a force-applying portion 363b connected to the first tooth portion 362a of the force-applying member 362, for transmitting the driving force of the force-bearing member 361 to the force-applying member 262.

[0165] As shown in Figures 30 and 38, in this embodiment, the developer cartridge 100 includes a detected portion that is different from that in the above-mentioned embodiments 1-3. When the developer cartridge 100 is installed in the imaging device, the detected portion of the developer cartridge 100 is used to transmit information about the developer cartridge 100 to the imaging device, so that the imaging device can identify the developer cartridge 100. Specifically, the developer cartridge 100 includes a light-emitting element 317 as a detected portion. The light-emitting element 317 can transmit information about the developer cartridge 100 to the imaging device by intermittently emitting infrared light. The developer cartridge 100 also includes a control chip 317a and a trigger switch 317b. The control chip 317a is used to control the on and off of the light-emitting element 317 and provide power to the light-emitting element 317. In response to the rotation of the drive gear 111, the trigger switch 317b can send an activation signal to the control chip 317a, thereby activating the trigger chip 317. Furthermore, the developer cartridge 100 also includes a trigger gear 317c for contacting the trigger switch 317b. The trigger gear 317c can rotate about a trigger gear axis extending in the left-right direction in response to the rotation of the drive gear 111, and has a contact position with the trigger switch 317b and a non-contact position. When the trigger gear 317c is in the contact position, the trigger gear 317c contacts the trigger switch 317b, causing the trigger switch 317b to release an activation signal to the control chip 317a, thereby activating the control chip 317a to control the light emitting element 317 to transmit information about the developer cartridge 100 to the imaging device. When the trigger gear 317c is in the non-contact position, the trigger switch 317b stops sending the activation signal to the control chip 317a, thereby maintaining the control chip 317b in a dormant state, thereby effectively controlling the light emitting element 317.

[0166] The provision of the light emitting element 317 replaces the function of the detected protrusion, simplifies the structure of the developer cartridge 100, reduces the production cost of the developer cartridge 100, and facilitates the miniaturization of the developer cartridge 100. Furthermore, the design of the light emitting element 317 has higher stability than the mechanical components used in the prior art.

[0167] Example 5:

[0168] Figures 39-43 illustrate a developer cartridge according to Example 5 of the present invention. Similarities with Example 4 are not repeated in this embodiment. The difference between this embodiment and Example 4 is that the storage chip in the developer cartridge 100 of this embodiment is configured differently from that in the above embodiment. Specifically, the developer cartridge 100 includes a storage chip 408 and a chip holder 410 for supporting the storage chip 408. The storage chip 408 is used to store information about the developer cartridge 100.

[0169] As shown in Figures 39 and 41, the memory chip 408 is disposed on the left side of the developer cartridge 100 in the left-right direction. The memory chip 408 includes a plurality of electrical contact surfaces 409, which face upward in the top-bottom direction of the developer cartridge 100. The plurality of electrical contact surfaces 409 include at least a GND (ground) terminal 409b. When the developer cartridge 100 is mounted on the imaging device, the GND (ground) terminal 409b is electrically connected to the negative pole of the power supply in the imaging device or the ground circuit in the imaging device. The developer cartridge 100 also includes a second electrical contact portion 408b, which is spaced apart from the electrical contact surface 409 and electrically connected to the GND (ground) terminal 409b.

[0170] As shown in the fourth embodiment above, the developer cartridge 100 further includes an electrical connection assembly 300, which includes a circuit board 310, a connecting arm 320, a protective cover 330, and a plurality of connectors. The circuit board 310 includes a first resistor 311, a second resistor 312, a power contact 313, a power supply contact 314, and a ground contact 315. As shown in FIG40 , the developer cartridge 100 further includes an electrical connector 451 for connecting the electrical connection assembly 300 and the memory chip 408. The electrical connector 451 includes a first end 315a that contacts the ground contact 315 on the circuit board 310, and a second end 315b that contacts the second contact portion 408b of the memory chip 408 in the developer cartridge 100. In other words, the ground contact 315 of the circuit board 310 is electrically connected to the second electrical contact portion 408b of the memory chip 408 via the electrical connector 315. At least a portion of the electrical connector 315 extends in the left-right direction.

[0171] As shown in Figures 40 and 42-43, the developer cartridge 100 further includes a chip holder 410 for supporting the memory chip 408. The chip holder 410 is disposed on the left side of the developer cartridge 100 in the left-right direction. Specifically, the protective cover 101b is fixedly disposed on the left side surface of the powder hopper 101 in the left-right direction. The chip holder 410 is fixedly connected to the outer side of the protective cover 101b, away from the powder hopper 101, in the left-right direction by screws, elastic buckles, or the like. In the left-right direction, the electrical contact surface 409 is spaced apart from the connecting arm 320. In the front-to-back direction, the electrical contact portion 320a of the connecting arm 320 is disposed at the front end of the developer cartridge 100 when installed, while the electrical contact surface 409 is located near the rear end of the developer cartridge 100. In other words, the electrical contact surface 409 is relatively far away from the electrical contact portion 320a in the developer cartridge 100, thereby preventing electrical interference between the power connection assembly 300 and the memory chip 408 and improving the stability of the power connection assembly 300 and the memory chip 408 of the developer cartridge 100.

[0172] Example 6:

[0173] 44-45 show a developing cartridge according to Example 6 of the present invention. The similarities with Example 5 are not repeated in this embodiment. The difference between this embodiment and Example 5 is that the developing cartridge 100 of this embodiment has different configurations from those of Example 5. Specifically, in this embodiment, the developing cartridge 100 includes a forced pushing portion 506 and a lifted portion 520.

[0174] As shown in Figures 44-45, the forced urging portions 506 are provided on both sides of the housing 101 in the left-right direction. When the developer cartridge 100 is mounted on the drum cartridge, the forced urging portions 506 receive the force applied by the forced urging portions in the drum cartridge to the developer cartridge 100, causing the developing roller 120 in the developer cartridge 100 to approach the photosensitive drum in the drum cartridge. The forced urging portions 506 extend in the left-right direction. Specifically, the forced urging portions 506 are configured as columns extending outward from the side surfaces of the powder bin 101a in the left-right direction. As shown in Figure 45, when the developer box 100 is installed in the drum box, the forced push portion 506 is located between the electrical contact portion 320a of the connecting arm 320 and the electrical contact surface 409 of the storage chip 408 in the front-to-back direction. In this way, when the developer box 100 is installed in the drum box, the forced push portion 506 can better receive the force applied by the drum box to the developer box 100 to make the developing roller 120 close to the photosensitive drum, so that the connection between the electrical contact portion 320a of the developer box 100 and the charger in the drum box is more stable.

[0175] As shown in Figure 45, the lifted portion 520 is disposed on the rear side of the housing 101 in the front-to-back direction. When the developer cartridge 100 is mounted on the imaging device, the lifted portion 520 can receive the force applied by the imaging device to the developer cartridge 100, thereby moving the electrical contact surface 409 of the developer cartridge 100 toward the electrical connection components within the imaging device. In the front-to-back direction, the lifted portion 520 is disposed at opposite ends of the developer cartridge 100, opposite the electrical contact portion 320a, thereby preventing interference between the electrical contact portion 320a of the developer cartridge 100 and the imaging device.

[0176] As shown in Figures 44-45, the electrical contact portion 320a, the developer roller 120, the forced push portion 506, the electrical contact surface 409, and the lifted portion 520 are arranged from front to back in the front-to-back direction. When the lifted portion 520 receives force from the imaging device, it causes the rear side of the developer cartridge 100 to tilt upward around the rotation axis of the developer roller 120. The electrical contact surface 409 moves upward along with the rear side of the developer cartridge 100 and contacts the electrical connection components within the imaging device, thereby establishing an electrical connection between the memory chip 408 of the developer cartridge 100 and the imaging device. Simultaneously, driven by the lifted portion 520, the electrical contact portion 320a, located in front of the rotation axis of the developer roller 120 in the front-to-back direction, moves downward and comes into closer contact with the charger of the drum cartridge, thereby improving the stability of the electrical connection between the charger assembly 300 of the developer cartridge 100 and the charger of the drum cartridge.

[0177] As shown in Figure 45, the electrical contact portion 320a is provided at the front end of the connecting arm 320 in the front-to-back direction. The electrical contact portion 320a extends in the top-to-bottom direction by an extension portion 320a1. The extension portion 320a1 is made of a deformable conductive material to allow the electrical contact portion 320a to accommodate larger production errors, thereby improving the adaptability of the developer cartridge 100. Preferably, the extension portion 320a1 is made of a conductive rubber material.

[0178] Example 7:

[0179] As shown in Figures 46-54, a developing box in Example 7 of the present invention is shown. The similarities with the above-mentioned Example 6 are not repeated in this embodiment. The difference between this embodiment and the above-mentioned Example 6 is that the arrangement of the forced pushing part, the gear system and the power connection component 300 in the developing box 100 of this embodiment is different from the arrangement in the above-mentioned Examples 1-6.

[0180] Specifically, as shown in Figures 46-50, the developer cartridge 100 has guided portions 601 extending outwardly from both sides in the left-right direction. When viewed in the left-right direction, at least a portion of the guided portions 601 overlaps with the developer roller 120. The developer cartridge 100 also includes a separating portion 602 and a forced-pushing portion 603. The separating portion 602 can receive forces from outside the developer cartridge 100 to drive the developer cartridge 100 in a direction that separates the developer roller 120 from the photosensitive drum of the drum cartridge. The forced-pushing portion 603 can receive forces from outside the developer cartridge 100 to drive the developer cartridge 100 in a direction that brings the developer roller 120 into contact with the photosensitive drum of the drum cartridge. In this embodiment, the guided portions 601, the separating portion 602, and the forced-pushing portion 603 are integrally formed. A cover plate 606 is provided at the bottom of the developer cartridge 100, extending in the left-right direction. In the front-to-back direction, the cover plate 606 overlaps with at least a portion of the guided portion 601 , the separated portion 602 , and the forcedly pushed portion 603 , thereby increasing the anti-deformation strength of the housing 101 in the left-to-right direction.

[0181] As shown in Figures 51-53, the developer cartridge 100 includes a gear train for driving components within the developer cartridge 100. The gear train includes, but is not limited to, a coupling gear 611, a developing roller gear 612, a powder feed roller gear 613, and a plurality of connecting gears. The coupling gear 611 is used to receive driving force from outside the developer cartridge 100. The powder feed roller gear 613 is connected to the coupling gear 611. The developing roller gear 612 is connected to the coupling gear 611 via a connecting gear. The connecting gears provided between the developing roller gear 612 and the coupling gear 611 are arranged in an even number. That is, 2n (n is a positive integer) connecting gears are provided between the developer cartridge 612 and the coupling gear 611. Specifically, in this embodiment, a first connecting gear 615 and a second connecting gear 616 are provided between the developer cartridge 612 and the coupling gear 611. In the front-to-back direction, a portion of the forced pushing portion 603 is closer to the developing roller 120 than the coupling gear 611.

[0182] The developing box 100 is further provided with a stirring frame and a stirring frame gear 614 connected to the end of the stirring frame, and the stirring frame gear 614 is meshed and connected with the coupling gear 611 through the third connecting gear 617. In the front-to-back direction, the rotation axis of the stirring frame gear 614 is closer to the developing roller 120 than the rotation axis of the third connecting gear 617.

[0183] As shown in conjunction with Figures 46-48 and 53-54 , the developer cartridge 100 includes a contact assembly 300 serving as an electrode. The contact assembly 300 is located closer to the left side of the developer cartridge 100 than to the right side in the left-right direction. The contact assembly 300 includes a connecting arm 320 extending in the front-to-back direction, with an electrical contact portion 620a provided at the distal end of the connecting arm 320 in the front-to-back direction. As shown in Figure 55 , the drum cartridge 50 includes a photosensitive drum 52 and a charger 57. The charger 57 is provided on one side of the photosensitive drum 52 in the radial direction and is used to charge the photosensitive drum 52. At least a portion of the charger 57 is exposed through a laser port of the drum cartridge 50. The laser port of the drum cartridge 50 is configured as an opening in the drum cartridge 50 that, when the drum cartridge 50 is mounted in an imaging device, exposes the photosensitive drum 52 so that a laser component in the imaging device can illuminate the photosensitive drum 52. As shown in Figure 55, when the developer box 100 is installed to the drum box 50, the electrical contact portion 620a of the developer box 100 passes through the laser port of the drum box 50 and is connected to the charger 57 of the drum box 50, so that the electrical contact portion 620a receives the power from the charger 57 in the drum box 50 and transmits the power to the developer conveying member in the developer box 100.

[0184] Furthermore, the electrical contact portion 620a is made of a deformable conductive material so that the electrical contact portion 620a can more easily contact the charger 57, thereby effectively reducing the processing accuracy requirements of the developer cartridge 100. Specifically, in this embodiment, the electrical contact portion 620a is configured as conductive rubber.

[0185] 54 , the developer cartridge 100 includes a chip 608 having an electrical contact surface 609 for electrical connection to the imaging device. The electrical contact surface 609 includes at least a GND (ground) terminal. The chip 608 is fixedly supported on the left side of the developer cartridge 100 in the left-right direction by a chip holder 610. The power connection assembly 300 of the developer cartridge 100 includes a circuit board 310. An electrical connector 651 is provided between the circuit board 310 and the chip 608. At least a portion of the electrical connector 651 extends in the left-right direction. A first end 651a of the electrical connector 651 is electrically connected to the ground terminal 315 of the circuit board 310, and a second end 651b of the electrical connector 651 is electrically connected to the GND (ground) terminal of the chip 608.

[0186] Functions and beneficial effects:

[0187] In the multiple schemes of the developing box of the present invention, by redesigning the power supply device, the developing box can receive power from the drum box and transmit it to the developing roller, powder feeding roller and powder discharge knife, thereby ensuring the imaging quality of the developing box; at the same time, the direct contact between the developing box and the electronic photographic imaging device is reduced, avoiding the mutual collision between the developing box and the electronic photographic imaging device caused by the vibration generated when the developing box is working, and effectively improving the service life of the developing box and the electronic photographic imaging device; in addition, the power supply device on the electronic photographic imaging device that supplies power to the developing box can be eliminated, thereby reducing the production cost of the electronic photographic imaging device.

[0188] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A developing cartridge, which can be detachably mounted to a drum cartridge, comprising: a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction; an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction; a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing; It is characterized in that it further comprises an electrode, wherein the electrode is electrically connected to a component of the developing box; The electrode includes a power contact portion, and the power contact portion can be in contact with a power supply member outside the developing cartridge; In the first direction, the power connection portion is closer to the first side of the housing than to the second side of the housing.

2. The developing cartridge according to claim 1, wherein The electrode further includes a power supply portion and a grounding portion; The power supply portion can be in contact with and electrically connected to a component of the developing cartridge, and the grounding portion is used to be in contact with an external grounding member of the developing cartridge and / or a negative electrode of a power source; The power supply portion and the ground portion may be electrically connected to the power receiving portion.

3. The developing cartridge according to claim 2, wherein: In the first direction, the power supply portion is closer to the first side of the housing than to the second side of the housing.

4. The developing cartridge according to claim 2, wherein: In the first direction, the ground portion is closer to the first side of the housing than to the second side of the housing; In a third direction intersecting the first direction and the second direction, the grounding portion is farther from the rotation axis of the developing roller than the rotation axis of the input gear.

5. The developing cartridge according to claim 2, wherein: The chip has a ground contact, and the ground portion can be electrically connected to the ground contact.

6. The developing cartridge according to claim 1, wherein: In the second direction, the power receiving portion is farther from a rotation axis of the input gear than a rotation axis of the developing roller.

7. The developing cartridge according to claim 1, wherein: Also comprising a detected protrusion, wherein the detected protrusion is movable relative to the housing; In the first direction, the detected protrusion is closer to the second side of the housing than to the first side of the housing.

8. The developing cartridge according to claim 1, wherein: Also includes a light-emitting member; In the first direction, the light emitting element is closer to the second side of the housing than to the first side of the housing.

9. The developing cartridge according to claim 1, wherein: In a state where the developing cartridge is mounted on the drum cartridge, the power contact portion may be in contact with a charger inside the drum cartridge.

10. The developing cartridge according to claim 1, wherein In the second direction, at least a portion of the power receiving portion is farther from the fourth side of the housing than the developing roller.

11. The developing cartridge according to claim 1, wherein In the first direction, a maximum distance between the end of the input gear and the power connection portion is L, wherein 31 mm < L < 41 mm.

12. The developing cartridge according to claim 1, wherein The power connection portion extends in the first direction, and a length of the power connection portion in the first direction is S, wherein 2 mm ≤ S ≤ 10 mm.

13. The developing cartridge according to claim 1, wherein The power connection portion is movable relative to the housing between a first position and a second position.

14. A developing cartridge, comprising: a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction; an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction; a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing; It is characterized in that it further comprises an electrode, wherein the electrode is electrically connected to a component of the developing box; The electrode includes a power contact portion, and the power contact portion can be in contact with a power supply member outside the developing cartridge; The power connection portion is movable relative to the housing between a first position and a second position; In the second direction, the first position is closer to the fourth side of the housing than the second position.

15. The developing cartridge according to claim 14, wherein: It also includes an elastic member for keeping the power connection part in the first position.

16. The developing cartridge according to claim 14, wherein: In the second direction, the first position of the power connection portion is closer to the electrical contact surface than the second position of the power connection portion.

17. The developing cartridge according to claim 14, wherein: The developing box further includes a force receiving portion configured to receive a force from outside the developing box to drive the electrode to move from the first position to the second position.

18. A developing cartridge, comprising: a housing for accommodating a developer, the housing having a first side and a second side separately disposed in a first direction, and a third side and a fourth side separately disposed in a second direction intersecting the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, wherein the developing roller is located on the third side of the housing in the second direction; an input gear for receiving a driving force from outside the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located on the first side of the housing in the first direction; a chip having an electrical contact surface, wherein the electrical contact surface is located on the first side of the housing; It is characterized in that the developing box further includes an electrode, and the electrode is used to receive electricity from the outside of the developing box and transmit it to the components of the developing box; The electrode includes a power connection portion, a grounding portion, and a voltage regulating unit, wherein the power connection portion can be in contact with a power supply component outside the developing cartridge, and the grounding portion is used to contact a grounding component outside the developing cartridge and / or a negative electrode of a power source; In the first direction, the power connection portion is closer to the first side of the housing than to the second side of the housing; The power connection part can be electrically connected to the grounding part and the voltage regulating unit; When the grounding portion is electrically connected to a grounding member outside the developing cartridge and / or a negative electrode of a power source, the voltage regulating unit is configured to adjust a first voltage connected to the developing cartridge to a second voltage different from the first voltage.

19. The developing cartridge according to claim 18, wherein: The first voltage is greater than the second voltage.

20. The developing cartridge according to claim 18, wherein Also included is a power supply portion, the power supply portion being configured to contact and electrically connect with components of the developing cartridge; a first impedance unit, electrically connected between the power receiving portion and the power supply portion; The second impedance unit is electrically connected between the power supply part and the ground part.

21. The developing cartridge according to claim 20, wherein: The resistance value of the first impedance unit is R1, and the resistance value of the second impedance unit is R2; wherein, 5MΩ≤R1=R2≤10MΩ.

Images