Developing box

Abstract

The utility model discloses a developing box, which can be detachably mounted on a drum box, and comprises a shell used for accommodating a developing agent and provided with a first side and a second side which are separately arranged in a first direction; a developing roller; an input gear for receiving a driving force outside the developing cartridge, the input gear being rotatable about an input gear axis extending in a first direction, the input gear being located on a first side of the housing in the first direction; the chip is provided with an electric contact surface, and the electric contact surface is located on the first side of the shell; an electrode; the electrode comprises a power connection part, and the power connection part can be in contact with a power supply component outside the developing box; in the first direction, the power connection part is closer to the first side of the shell relative to the second side of the shell; compared with the prior art, the developing box disclosed by the utility model has the advantages that the impact on the electrophotographic imaging device caused by vibration generated when the developing box works is avoided, and the service life of the electrophotographic imaging device can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrophotographic imaging, and particularly relates to a developing box. BACKGROUND

[0002] The prior art discloses a developing box capable of being installed together with a drum cartridge to an electrophotographic imaging device, the developing box comprising a developing roller, a powder feeding roller and an electrode, wherein the electrode can receive power of the electrophotographic imaging device and transmit the power to the developing roller and the powder feeding roller, so as to improve the imaging quality of the developing box; the drum cartridge comprises 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 cartridge, the electrophotographic imaging device is provided with a drum power supply member for supplying power to the developing box and the drum cartridge respectively, the developing box is installed in the interior of the electrophotographic imaging device through the support of the drum cartridge, and during the imaging operation of the electrophotographic imaging device, the developing roller, the powder feeding roller and other components of the developing box are all in a moving state, under long-term use, the developing power supply member in the interior of the electrophotographic imaging device and the electrode on the developing box are prone to be damaged due to the motion impact, which will reduce the imaging quality of the developing box and the service life of the developing box and the electrophotographic imaging device. SUMMARY

[0004] Therefore, the utility model provides a kind of developing box to solve above-mentioned technical problems, mainly by following technical scheme to realize:

[0005] A developing box, the developing box can be installed to drum cartridge in a detachable manner, the developing box comprises:

[0006] A housing for containing a developer, the housing has a first side and a second side arranged separately in a first direction, the housing has a third side and a fourth side arranged separately in a second direction intersecting the first direction;

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

[0008] An input gear for receiving a driving force from outside of the developing box, the input gear is rotatable about an input gear axis extending in the first direction, and the input gear is located at the first side of the housing in the first direction;

[0009] A chip having an electrical contact surface, the electrical contact surface is located at the first side of the housing;

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

[0011] The electrode includes an electricity-contacting portion that is contactable with a power supply member outside the developing cartridge;

[0012] In the first direction, the electricity-contacting portion is closer to the first side of the housing relative to the second side of the housing.

[0013] Further, the electrode further includes a power supply portion and a ground portion;

[0014] The power supply portion is contactable with and electrically connected to a component of the developing cartridge, and the ground portion is for contact with a ground member and / or a power supply negative pole outside the developing cartridge;

[0015] The power supply portion and the ground portion are electrically connected to the electricity-contacting portion.

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

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

[0018] In a third direction that intersects the first direction and the second direction, the ground portion is further from the rotational axis of the developing roller relative to the rotational axis of the input gear.

[0019] Further, the chip has a ground contact, and the ground portion is electrically connected to the ground contact.

[0020] Further, in the second direction, the electricity-contacting portion is further from the rotational axis of the input gear relative to the rotational axis of the developing roller.

[0021] Further, a detected protrusion is included that is movable relative to the housing;

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

[0023] Further, a light-emitting member is included;

[0024] In the first direction, the light-emitting member is closer to the second side of the housing relative to the first side of the housing.

[0025] Further, in a state where the developing cartridge is installed to the drum cartridge, the electricity-contacting portion is contactable with a charger inside the drum cartridge.

[0026] Further, in the second direction, at least a portion of the power contact portion is further from the fourth side of the housing than the developer roller.

[0027] Further, in the first direction, an end of the input gear is at a maximum distance L from the power contact portion, where 31 mm < L < 41 mm.

[0028] Further, the power contact portion extends in the first direction, and a length of the power contact portion in the first direction is S, where 2 mm ≤ S ≤ 10 mm.

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

[0030] The utility model also provides a developing box, the developing box includes:

[0031] Housing for containing developer, the housing has first side and second side which are separately arranged in the first direction, the housing has third side and fourth side which are separately arranged in the second direction intersecting with the first direction;

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

[0033] Input gear for receiving driving force from outside of the developing box, the input gear is rotatable about an input gear axis extending in the first direction, the input gear is located at the first side of the housing in the first direction;

[0034] Chip having an electrical contact surface, the electrical contact surface is located at the first side of the housing;

[0035] Electrode, which is electrically connected to a component of the developing box;

[0036] The electrode includes a power contact portion, which is contactable with a power supply member from outside of the developing box;

[0037] The power contact 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] Further, a resilient member is further included for retaining the power contact portion in the first position.

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

[0041] Further, a force receiving portion is further included for receiving a force from outside of the developer cartridge to drive the electrode to move from the first position to the second position.

[0042] The utility model further provides a developer cartridge, the developer cartridge comprises:

[0043] A housing for containing a developer, the housing has a first side and a second side arranged separately in a first direction, the housing has a third side and a fourth side arranged separately in a second direction intersecting the first direction;

[0044] A developing roller rotatable about a developing roller axis extending in the first direction, the developing roller being located at the third side of the housing in the second direction;

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

[0046] A chip having an electrical contact surface, the electrical contact surface being located at the first side of the housing;

[0047] An electrode for receiving an electric power from outside of the developer cartridge and delivering to components of the developer cartridge;

[0048] The electrode comprises a power contact portion, a ground contact portion and a voltage regulating unit, the power contact portion being contactable with a power supply member from outside of the developer cartridge, the ground contact portion being contactable with a ground member and / or a negative pole of a power supply from outside of the developer cartridge;

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

[0050] The power contact portion is electrically connected with the ground contact portion and the voltage regulating unit;

[0051] In a state that the ground contact portion is electrically connected with a ground member and / or a negative pole of a power supply from outside of the developer cartridge, the voltage regulating unit is configured to adjust a first voltage inputted into the developer cartridge to a second voltage different from the first voltage.

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

[0053] Further, a power supply part is arranged to contact and electrically connect with the components of the developing cartridge;

[0054] A first impedance unit is electrically connected between the power connection part and the power supply part;

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

[0056] Further, the first impedance unit has a resistance value of R1, and the second impedance unit has a resistance value of R2; wherein 5MΩ≤R1=R2≤10MΩ.

[0057] Advantages:

[0058] The developing cartridge of the utility model, through the redesign of the power supply device, can receive the power on the drum cartridge from the drum cartridge and transfer to the developing roller, the powder feeding roller and the powder outlet knife, so as to guarantee the imaging quality of the developing cartridge; at the same time, the direct contact between the developing cartridge and the electrophotographic imaging device is reduced, the mutual collision caused by the vibration of the developing cartridge during work is avoided, the service life of the developing cartridge and the electrophotographic imaging device is effectively improved; in addition, the power supply device on the electrophotographic imaging device for supplying power to the developing cartridge can be cancelled, and the production cost of the electrophotographic imaging device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 It is a drum cartridge in the prior art;

[0060] Figure 2 It is a disassembly mechanism schematic view of the drum frame in the prior art drum cartridge;

[0061] Figure 3 It is a three-dimensional structure schematic view of the developing cartridge in the embodiment 1 of the utility model;

[0062] Figure 4 It is a three-dimensional structure schematic view of the developing cartridge from another angle in the embodiment 1 of the utility model;

[0063] Figure 5 It is a partial disassembly structure schematic view of the left end part in the developing cartridge in the embodiment 1 of the utility model;

[0064] Figure 6 It is a three-dimensional structure schematic view of the power supply assembly in the embodiment 1 of the utility model;

[0065] Figure 7 It is a circuit diagram of the power supply assembly in the embodiment 1 of the utility model;

[0066] Figure 8 It is a three-dimensional structure schematic view of the connecting member in the embodiment 1 of the utility model;

[0067] Figure 9 is a perspective view of the power supply assembly in the embodiment 2 of the utility model;

[0068] Figure 10 is a circuit diagram of the power supply assembly in the embodiment 2 of the utility model;

[0069] Figure 11 is an exploded view of the drum frame in the prior art drum cartridge;

[0070] Figure 12 is a perspective view of the developing cartridge in the embodiment 3 of the utility model;

[0071] Figure 13 is a perspective view of the developing cartridge in the embodiment 3 of the utility model from another angle;

[0072] Figure 14 is a top view of the developing cartridge in the embodiment 3 of the utility model in the up-down direction;

[0073] Figure 15 is a left view of the developing cartridge in the embodiment 3 of the utility model in the left-right direction;

[0074] Figure 16 is an exploded view of the left end of the developing cartridge in the embodiment 3 of the utility model;

[0075] Figure 17 is a sectional view of the developing cartridge at A-A in the embodiment 3 of the utility model; Figure 14

[0076] Figure 18 is a perspective view of the circuit board in the embodiment 3 of the utility model;

[0077] Figure 19 is a perspective view of the circuit board, the connecting arm and the plurality of connecting pieces in the embodiment 3 of the utility model;

[0078] Figure 20 is a top view of the circuit board, the connecting arm and the plurality of connecting pieces in the embodiment 3 of the utility model in the up-down direction;

[0079] Figure 21 is a sectional view of the protective cover in the embodiment 3 of the utility model in the vertical direction;

[0080] Figure 22 is a top view of the protective cover in the embodiment 3 of the utility model in the up-down direction;

[0081] Figure 23 is a perspective view of the connecting arm in the embodiment 3 of the utility model;

[0082] Figure 24 is a perspective view of the developing cartridge in the embodiment 3 of the utility model;​Figure 14 Cross-sectional view of the middle connection electrical assembly at B-B;

[0083] Figure 25 is a cross-sectional view of the drum box in the left-right direction of the developing box in the state that the developing box is installed to the drum box in the embodiment 3 of the utility model;

[0084] Figure 26 is the utility model Figure 25 Enlarged view at C;

[0085] Figure 27 is the top view of the left end portion of the developing box in the up-down direction in the embodiment 4 of the utility model;

[0086] Figure 28 is the three-dimensional structure schematic view of the developing box in the embodiment 4 of the utility model;

[0087] Figure 29 is the three-dimensional structure schematic view of the developing box in another angle in the embodiment 4 of the utility model;

[0088] Figure 30 is the top view of the developing box in the up-down direction in the embodiment 4 of the utility model;

[0089] Figure 31 is the left view of the developing box in the left-right direction in the hidden state of the protective cover in the embodiment 4 of the utility model;

[0090] Figure 32 is the partial exploded schematic view of the left end portion of the developing box in the embodiment 4 of the utility model;

[0091] Figure 33 is the three-dimensional structure schematic view of the storage chip in the embodiment 4 of the utility model;

[0092] Figure 34 is the bottom view of the storage chip in the up-down direction in the embodiment 4 of the utility model;

[0093] Figure 35 is the structure schematic view of the circuit board in a certain angle in the embodiment 4 of the utility model;

[0094] Figure 36 is the left view of the connecting arm and the driving assembly in the left-right direction in the state that the connecting arm is in the first position in the embodiment 4 of the utility model;

[0095] Figure 37 is the left view of the connecting arm and the driving assembly in the left-right direction in the state that the connecting arm is in the second position in the embodiment 4 of the utility model;

[0096] Figure 38 is the exploded schematic view of the light emitting piece from the developing box in the embodiment 4 of the utility model;

[0097] Figure 39 is a perspective view of the developing box in the embodiment 5 of the utility model, and the chip support is exploded from the developing box;

[0098] Figure 40 is a perspective view of the developing box in the embodiment 5 of the utility model, and the chip support is exploded from the developing box;

[0099] Figure 41 is a perspective view of the developing box in the embodiment 5 of the utility model, and the chip support is exploded from the developing box;

[0100] Figure 42 is the left view of the developing box in the embodiment 5 of the utility model in the second position state of the connecting arm in the left-right direction;

[0101] Figure 43 is the top view of the developing box in the embodiment 5 of the utility model in the second position state of the connecting arm in the up-down direction;

[0102] Figure 44 is a perspective view of the developing box in the embodiment 6 of the utility model, and the chip support is exploded from the developing box;

[0103] Figure 45 is the left view of the developing box in the embodiment 6 of the utility model in the second position state of the connecting arm in the left-right direction;

[0104] Figure 46 is a perspective view of the developing box in the embodiment 7 of the utility model, and the chip support is exploded from the developing box;

[0105] Figure 47 is the left view of the developing box in the embodiment 7 of the utility model in the left-right direction;

[0106] Figure 48 is the right view of the developing box in the embodiment 7 of the utility model in the left-right direction;

[0107] Figure 49 is the bottom view of the developing box in the embodiment 7 of the utility model in the up-down direction;

[0108] Figure 50 is the top view of the developing box in the embodiment 7 of the utility model in the up-down direction;

[0109] Figure 51 is the left view of the developing box in the embodiment 7 of the utility model in the left-right direction in the hidden state of the developing box cover;

[0110] Figure 52 is a perspective view of the developing box in the embodiment 7 of the utility model, and the chip support is exploded from the developing box;

[0111] Figure 53This is an exploded view of the protective cover and electrical connection assembly in the developing cartridge of Embodiment 7 of this utility model.

[0112] Figure 1 This is a left view of the developing cartridge in the drum cartridge state in Embodiment 7 of this utility model, viewed from the left-right direction. Detailed Implementation

[0113] To make the objectives, technical solutions, and technical effects of the embodiments of this utility model clearer, the technical solution of the developing cartridge of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely preferred embodiments of this utility model, and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model.

[0114] Example 1

[0115] like Figures 3-8 As shown, a drum box 50 in the prior art is illustrated, such as Figures 1-2 As shown, a developing cartridge 100 according to Embodiment 1 of this utility model is illustrated. The developing cartridge 100 is detachably installed in the drum box 50. The two can be installed as a whole in an electrophotographic imaging device (hereinafter referred to as "imaging device"). With the cooperation of the two and the imaging device, the printing task can be completed. The drum box 50 in the prior art and the developing cartridge 100 in this utility model will be described in detail below with reference to the specific drawings.

[0116] Drum Box

[0117] like Figures 3-5As shown in the figure, a drum cartridge 50 in the prior art is shown, the drum cartridge 50 comprises a drum frame 51, the drum frame 51 has a developing cartridge accommodating portion accommodating the developing cartridge 100 and configured as a cavity, a photosensitive drum 52 is arranged at the front side of the developing cartridge accommodating portion, a photosensitive drum gear 53 is connected to the left end of the photosensitive drum 52, the photosensitive drum gear 53 can be engaged with a gear (not shown in the figure) in the image forming device to receive 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-rear direction intersects the left-right direction; the drum cartridge 50 further comprises elastic pushing assemblies 55 respectively arranged at the left and right sides of the developing cartridge accommodating portion, the elastic pushing assemblies 55 can generate elastic pushing force after being subjected to external force; a locking member 54 is further arranged at the rear side of the elastic pushing assembly 55 at the left side of the drum cartridge 50, the locking member 54 is not limited to be arranged at the position behind the elastic pushing assembly 55 at the left side of the drum cartridge 50, the locking member 54 can lock the developing cartridge 100 by blocking the movement of the developing cartridge 100, thereby stably holding the developing cartridge 100 in the drum cartridge 50, and avoiding the developing cartridge 100 from accidentally falling out of the drum cartridge 50. The developing cartridge accommodating portion is further provided with guide portions 56 at both sides in the left-right direction, the guide portions 56 are used to guide the developing cartridge 100 to move to the correct position in the developing cartridge accommodating portion, the guide portions 56 are located between the photosensitive drum 52 and the pushing assembly 55 in the front-rear direction. As viewed along the left-right direction, the elastic pushing assembly 55, the guide portion 56 and the photosensitive drum 52 have a whole arrangement trend from rear to front in the front-rear direction.

[0118] The drum cartridge 50 further comprises a charger 57 arranged above the photosensitive drum 52 in the up-down direction, the charger 57 is a member for charging the photosensitive drum 52, in the embodiment, the charger 57 is configured as a grid-controlled corona charger separated from the photosensitive drum 52. The drum frame 51 is provided with an opening 58 for exposing at least a part of the charger 57 to the outside of the developing cartridge 100; the opening 58 is located above the charger 57 in the up-down direction.

[0119] Developing cartridge

[0120] As Figure 15 As shown in the figure, a developing cartridge 100 in the embodiment of the utility model is shown, the developing cartridge 100 is detachably installed in the above-mentioned drum cartridge 50, the developing cartridge 100 comprises a shell 101, the shell 101 comprises a powder bin 101a, the powder bin 101a can accommodate developer, the developing cartridge 100 further comprises a protective cover 101b detachably installed at the left side of the powder bin 101a, the protective cover 101b can cover the gear train of the developing cartridge 100, the gear train of the developing cartridge 100 comprises 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 transmission gear 116, the driving gear 111 is arranged at the left end of the shell 101, the driving gear 111 can rotate around an axis A2 (not shown in the figure) extending in the left-right direction, Figure 15) rotates. The drive gear 111 includes a coupling portion 111a which can be coupled with the imaging device and receive driving force from the imaging device, and gear teeth 111b which are provided integrally 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 being capable of driving the developing roller gear 112 and the powder feeding roller gear 113 to rotate. The stirring frame gear 114 can receive the driving force of the drive gear 111 through the idler gear 115 and rotate. The developing cartridge 100 further includes the stirring frame 102, the powder feeding roller 103 and the developing roller 104 which are supported on the housing 101, left ends of which are connected with the stirring frame gear 114, the powder feeding roller gear 113 and the developing roller gear 112 respectively, the stirring frame gear 114 driving the stirring frame 102 to rotate around a stirring frame axis which extends in the left-right direction, the powder feeding roller gear 113 driving the powder feeding roller 103 to rotate around a powder feeding roller axis which extends in the left-right direction, and the developing roller gear 112 driving the developing roller 104 to rotate around an axis Al which extends in the left-right direction. Figures 6-7 ) rotates. The developing roller 104 is provided at the front end of the housing 101 in the front-rear direction, and when the developing cartridge 100 is installed in the drum cartridge 50, the developing roller 104 of the developing cartridge 100 is in contact with the photosensitive drum 52 of the drum cartridge 50. During the operation of the developing cartridge 100, the stirring frame 102 which rotates can stir the developer in the powder reservoir 101a and deliver the developer to the powder feeding roller 103, the powder feeding roller 103 delivering the developer to the developing roller 104 while rotating, and the developing roller 104 can deliver the developer carried thereon to the photosensitive drum 52 by contact with the photosensitive drum 52 to develop the latent image on the photosensitive drum 52. The developing cartridge 100 includes the powder delivery blade 107 which is located between the powder feeding roller 103 and the developing roller 104 in the front-rear direction, and is used to control the thickness of the developer adhered to the developing roller 104.

[0121] The transmission gear 116 is engaged with the stirring frame gear 114 and can rotate following the stirring frame gear 114, in the embodiment, the transmission gear 116 is configured as a half-tooth gear. The developing cartridge 100 further comprises a detected protrusion 117 arranged above the right side of the housing 101, the detected protrusion 117 can move relative to the housing 101 according to the rotation of the transmission gear 116. In the embodiment, the detected protrusion 117 receives the driving force of the transmission gear 116 through a transmission rod 118 which spans the left and right sides of the developing cartridge 100 in the left-right direction, the detected protrusion 117 can actuate a detection body (not shown) inside the image forming device to transmit the capacity size and the new-old information of the developing cartridge 100 to the image forming device. After the developing cartridge 100 is installed to the image forming device, the detected protrusion 117 can actuate the detection body inside the image forming device to transmit the capacity and the new-old information of the developing cartridge 100 to the image forming device, the image forming device records the information of the developing cartridge 100 at the same time, when the developer in the developing cartridge 100 is about to be consumed, the image forming device can prompt the user to replace the new developing cartridge 100 through the operation panel or the indicator light and the like.

[0122] The left side of the developing cartridge 100 in the left-right direction is further provided with a locked portion 106 which cooperates with the locking portion 54 in the drum cartridge 50; when the developing cartridge 100 is installed to the drum cartridge 50, the locked portion 106 cooperates with the locking portion 54 on the drum cartridge 50, thereby stably holding the developing cartridge 100 in the drum cartridge 50 and avoiding the developing cartridge 100 from being accidentally detached from the drum cartridge 50. The rear side of the developing cartridge 100 in the front-rear direction is provided with two forced pushing protrusions 109, the two forced pushing protrusions 109 respectively extend from the rear side of the developing cartridge 100 in the left-right direction to form, in the state that the developing cartridge 100 is installed to 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-rear direction to move the developing roller 104 to the direction close to the photosensitive drum 52, so as to make the developing roller 104 and the photosensitive drum 52 keep close contact. The left and right sides of the developing cartridge 100 in the left-right direction further comprise a guiding portion 110, at least a part of the guiding portion 110 is coincident with the developing roller shaft 104a when viewed in the left-right direction; the guiding portion 110 is configured as a columnar protrusion which extends in the left-right direction; during the installation of the developing cartridge 100 to the drum cartridge 50, the guiding portion 110 cooperates with the guiding portion 56 in the drum cartridge, so as to make the developing cartridge 100 installed to the correct position in the drum cartridge 50; in other embodiments of the utility model, the guiding portion 110 can also be formed by the developing roller shaft 104a extending out of the housing 101 in the left-right direction.

[0123] The developing cartridge 100 also includes a chip 108 for storing information about the developing cartridge 100. The chip 108 includes an electrical contact surface 108a and a storage part (not shown). The electrical contact surface 108a can contact an electrical contact point (not shown) inside the imaging device. After the developing cartridge 100 is installed in the imaging device, the developing cartridge 100 can establish a communication connection with the imaging device to facilitate the imaging device to read the information of the developing cartridge 100, thereby enabling the imaging device to identify whether the installed developing cartridge 100 is compatible.

[0124] To ensure that the developer can be delivered more smoothly from the inside of the housing 110 to the photosensitive drum 52, the developing cartridge 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 exiting blade 107. The power supply component 120 can receive power from outside the developing cartridge 100 and is electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder exiting blade 107 to ensure that the developer can be delivered stably.

[0125] like Figure 6 As shown, the electrodes in the developing cartridge 100 differ from those in the prior art. The power supply component 120, serving as the electrode, includes a terminal 121 to provide power to the developing cartridge 100 via an external electrical connection. In the left-right direction, the power supply component 120 is located on the left side of the housing 101, and in the front-back direction, it is located near the front end of the housing 101. Specifically, the power supply component 120 is positioned on the top left side of the developing cartridge 100, effectively utilizing the top space of the developing cartridge 100, making its structure more compact and its layout more rational. This also facilitates miniaturization along the length of the developing cartridge 100.

[0126] Specifically, the power supply component 120 includes, but is not limited to, a power receiving terminal 121, a resistor 122, and a power supply terminal 123. When the developing cartridge 100 is installed in the drum cartridge 50, the power receiving terminal 121 can be connected to the live wire 57, which serves as a power supply component on the drum cartridge 50. The power supply component 120 is closer to the left side of the housing 101 in the left-right direction than the right side of the housing 101. That is, the power supply component 120 is closer to the left side of the developing roller 104, the powder feeding roller 103, and the powder exiting blade 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 exiting blade 107. One end of the resistor 122 is electrically connected to the power receiving 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.

[0127] The power supply end 123 is made of conductive material, preferably, the power supply end 123 is made of conductive resin. The power supply end 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.

[0128] As shown in Figure 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 size suitable for the power supply end 123.

[0129] As shown in Figure 8 and Figure 8 , in the state that the developing cartridge 100 is installed to the drum cartridge 50, the electricity receiving end 121 can be in contact with the charger 57 in the drum cartridge 50. In order to realize the stable connection of the electricity receiving end 121 in the developing cartridge 100 and the drum cartridge 50, the power supply assembly 120 further includes a connecting member 124 arranged at the electricity receiving end 121, the electricity receiving end 121 extends to the lower side of the connecting member 124 away from the power supply end 123 in the front-rear direction and is exposed outside the connecting member 124, the connecting member 124 is made of conductive material, preferably, the electricity receiving end 121 is made of metal iron or metal copper; the electricity receiving end 121 can be specifically configured as a wire.

[0130] Further, the various components in the power supply assembly 120 are connected by a wire or a flexible conductive enamel wire.

[0131] As shown in Figures 9-10 , the connecting member 124 includes a limiting portion 124a and a buckling portion 124b, the limiting portion 124a cooperates with the opening 58 on the drum cartridge 50 to limit the movement of the connecting member 124 and the drum cartridge 50 in the front-rear and left-right directions, in the engaged state of the developing cartridge 100 and the drum cartridge 50, the limiting portion 124a of the connecting member 124 is inserted into the inside of the opening 58; the buckling portion 124b is configured as an elastic buckle, but is not limited thereto, the buckling portion 124b can also be configured as other structures for preventing the connecting member 124 from falling off the drum cartridge 50, the present embodiment takes the buckling portion 124b configured as an elastic buckle as an example, when the connecting member 124 is engaged with the drum cartridge 50, the buckling portion 124b cooperates with one edge of the drum frame 51 in the drum cartridge 50, that is, the connecting member 124 is connected to the drum frame 51 of the drum cartridge 50 through the buckling portion 124b.

[0132] Further, the electricity receiving end 121 extends to the lower side of the limiting portion 124a, that is, the electricity receiving end 121 is located below the limiting portion 124a in the up-down direction.

[0133] When the developing cartridge 100 is used, the user installs the developing cartridge 100 in the drum frame 51 of the drum cartridge 50, and then inserts the limiting part 124a of the connecting member 124 into the opening 58 of the drum cartridge 50, at this time, the power receiving end 121 enters the inside of the opening 58 together with the limiting part 124a and contacts the charger 57 located below the opening 58, and the power receiving end 121 can receive the power of the charger 57 through the contact with the charger 57 in the drum cartridge 50; after the power receiving end 121 contacts the charger 57, the connecting member 124 is clamped on the drum frame 51 of the drum cartridge 50 through the clamping part 124 configured as an elastic buckle to prevent the connecting member 124 from being separated from the drum cartridge 50, and further prevent the contact between the power receiving end 121 and the charger 57 from being separated, thereby ensuring the stability of the power receiving end 121 and the charger 57.

[0134] Embodiment 2

[0135] As shown in Figure 10 , the same as in the above embodiment 1, the difference between the present embodiment and the above embodiment 1 is that the developing cartridge 100 comprises a power supply assembly 130 different from that in the above embodiment 1. Specifically, the power supply assembly 130 further comprises but is not limited to a power receiving end 131, a first resistor 132, a second resistor 133, a power supply end 134 and a grounding end 135. The connection between the components is as shown in Figure 10 , the first end of the first resistor 132 is electrically connected with the power receiving end 131, the second end of the second resistor 132 is electrically connected with the power supply end 134, the first end of the second resistor 133 is electrically connected with the second end of the first resistor 132 and the power supply end 134, and the second end of the second resistor 133 is electrically connected with the grounding end 135.

[0136] After the developing cartridge 100 is installed to the drum cartridge 50, the power receiving end 131 can contact the charger 57 of the drum cartridge 50, and the grounding end 135 can contact the photosensitive drum shaft 52a of the photosensitive drum 52 in the drum cartridge 50, and when the drum cartridge 50 is installed to the image forming device, the photosensitive drum shaft 52a is connected with the grounding circuit in the image forming device. Specifically, the grounding end 135 is configured as a conductive circular ring, preferably a metal conductive circular ring; the inner diameter of the conductive circular ring is greater than the outer diameter of the photosensitive drum shaft 52a, and the thickness of the conductive circular ring is less than 1.5 mm. In use, the conductive circular ring is sleeved on the outer surface of one end of the photosensitive drum shaft 52a in the drum cartridge 50.

[0137] As shown in Figures 12-27 , the second resistor 133 is connected in parallel with the power supply end 134 and each power receiving component of the developing cartridge 100.

[0138] Embodiment 3

[0139] As shown in Figure 11As shown, the development box of the utility model for a kind of, this embodiment is different from the above-mentioned embodiment 1-2 in that: the power supply assembly 200 different from the above-mentioned embodiment 1-2 is arranged in the development box of this embodiment.Specifically, Figures 12-27 A drum box 50 cooperating with the development box 100 in the prior art is shown, Figure 25 The development box 100 of the embodiment is shown.Drum box 50 can be installed with development box 100 into an imaging device in the prior art to carry out imaging operation, and the imaging device can be an electronic laser printer, and the imaging device is internally provided with metal frame 11 electrically connected with zero line or ground line of power supply in the imaging device, Figure 11 ).

[0140] As shown in the figure, Figures 12-18 Drum box 50 includes drum frame 51, and drum frame 51 has development box containing part containing development box 100 and being configured as cavity, and photosensitive drum 52 is arranged at the front side of development box containing part, and the left end of photosensitive drum 52 is connected with photosensitive drum gear 53, and photosensitive drum gear 53 can be engaged with gear (not shown in the figure) in the imaging device to receive driving force rotation, and in turn, photosensitive drum 52 can be driven to rotate around photosensitive drum axis extending in left-right direction, and front-rear direction intersects with left-right direction.Drum box 50 further includes charger 57 arranged above photosensitive drum 52 in up-down direction, and charger 57 is the member for charging photosensitive drum 52, and charger 57 is specifically grid-controlled corona charger in the embodiment.Drum frame 51 is provided with opening 58 for exposing at least a part of charger 57 to outside;Opening 58 is above charger 57 in up-down direction.Development box containing part is further provided with guide part 56 at both sides in left-right direction, and guide part 56 is used to guide development box 100 to move to correct position in development box containing part.

[0141] Figures 16-24The developing box 100 of the utility model is shown in the figure, and the same parts as those in the above embodiment 1-2 will not be described here again. In order to ensure that the developer is smoothly conveyed from the inside of the shell 110 to the photosensitive drum 52, the developing box 100 is further provided with an electricity receiving assembly. The electricity receiving assembly comprises an electricity receiving end, a power supply end and a voltage reduction circuit. The electricity receiving end is connected with the electrifier 57 in the drum box 50 to receive the power on the drum box 50 and is transmitted to the developer conveying members 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 utility model no longer sets the electrode which directly contacts with the imaging device. In the utility model, the electrode of the developing box 100 receives the power of the drum box 50 through the electrical connection with the drum box 50, so as to realize the smooth conveying of the developer. Specifically, the developing box 100 comprises the electricity receiving assembly 200 as the electrode. The electricity receiving assembly 200 is used for supplying power for at least one of the developing roller 104, the powder feeding roller 103 and the powder outlet knife 107. The electricity receiving assembly 200 is arranged on the top of the shell 101 in the up-down direction. The electricity receiving assembly 200 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 electricity receiving assembly 200 is closer to the front side of the shell 101 relative to the rear side of the shell 101 in the front-rear direction. Specifically, the electricity receiving assembly 200 is installed on the top of the powder bin 101a and is arranged at the position close to the left side in the left-right direction. The electricity receiving assembly 200 can receive the power from the outside of the developing box 100 and is electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder outlet knife 107, so as to make the conveying of the developer in the developing box 100 more smooth.

[0142] Specifically, as shown in the figure, Figure 18 The electricity receiving assembly 200 comprises a circuit board 210, a connecting arm 220, a protective cover 230 and a plurality of connecting pieces. The connecting pieces comprise but are not limited to the first connecting piece 211 for connecting the circuit board 210 and the connecting arm 220, the second connecting piece 241 for connecting the powder outlet knife 107 and the circuit board 210 and the third connecting piece 251 for connecting the circuit board 210 and the metal frame 11. The protective cover 230 is used for covering at least a part of the circuit board 210 and the plurality of connecting pieces to protect the circuit board 210 and the connecting pieces. In order to prevent the short circuit, the protective cover 230 and the powder bin 101a are made of insulating materials. The connecting arm 220 is used for receiving the external power supply. In the embodiment, the connecting arm 220 can contact and form the electrical connection with the electrifier 57 of the drum box 50 to receive the power of the electrifier 57 in the drum box 50. The connecting arm 220 extends in the front-rear direction. The connecting arm 220 is connected to the front side of the protective cover 230 in the front-rear direction. The connecting arm 220 is made of conductive materials to facilitate the electrical connection. Preferably, the connecting arm 220 is made of conductive resin materials.

[0143] As shown in the figure, Figures 19-20As shown, the circuit board 210 comprises a plurality of resistors and a plurality of connecting contacts, in the embodiment, the circuit board 210 comprises two resistors and three connecting contacts, i.e. a first resistor 211, a second resistor 212, a connecting contact 213, a power supply contact 214 and a grounding 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, and the second end of the first resistor 211 and the first end of the second resistor 212 serve as a common connecting end, the connecting 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 connecting end, and the grounding contact 215 is electrically connected to the second end of the second resistor 212.

[0144] Further, 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, and preferably, in the embodiment, the resistance value of the first resistor 211 and the second resistor 212 is 5MΩ, and in the state of electrical connection of the circuit board 210, the voltage at the power supply contact 214 is reduced to approximately 1 / 2 of the voltage at the connecting contact 213 under the action of the first resistor 211 and the second resistor 212. The connecting contact 213 is electrically connected to the connecting arm 220 through the first connecting member 221, and the power supply contact 214 is electrically connected to at least one of the developing roller 104, the powder feeding roller 103 and the powder outlet knife 107. Preferably, in the embodiment, the powder outlet knife 107 is made of conductive material, and the power supply contact 214 is electrically connected to the powder outlet knife 107. The first side of the housing 101 is provided with a support for supporting the developing roller 104 and the powder feeding roller 103, that is, the support rotates to support the left end of the developing roller 104 and the powder feeding roller 103, and the support is made of conductive material, and preferably, the support is made of conductive resin material. The powder outlet knife 107 is electrically connected to the support, and the support is respectively electrically connected to the developing roller 104 and the powder feeding roller 103, thereby realizing power supply from the developing cartridge 100 to at least one of the developing roller 104, the powder feeding roller 103 and the powder outlet knife 107.

[0145] Further, as shown in Figure 23 the first connecting member 221, the second connecting member 241 and the third connecting member 251 are all configured as elastic conductive members, that is, the connection between each connecting member and the circuit board 210 is an elastic connection, so as to improve the stability of the connection between each connecting member and the circuit board 210. Specifically, the first connecting member 221 is configured as a torsion spring, the first connecting member 221 comprises a first end portion 221a and a second end portion 221b, the first end portion 221a is connected to the connecting contact 213 of the circuit board 210, and the second end portion 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 Figures 21-22), at least a part of the second end portion 221b is clamped inside the groove 221c to make the contact between the connecting arm 220 and the second end portion 221b more stable. The second connecting member 241 is configured as a spring structure at both ends to make the contact between the second connecting member 241 and the circuit board 210 and the powder outlet blade 107 more stable. The second connecting member 241 includes a first connecting end 241a and a second connecting end 241b, the first connecting end 241a is connected with the power supply contact 214 of the circuit board 210, and the second connecting end 241b is electrically connected with the developer conveying member in the developing cartridge 100. In the embodiment, the second connecting end 241b is connected with the powder outlet blade 107, and in other embodiments of the utility model, the second connecting end 241b can also be electrically connected with the developing roller 104 or the powder feeding roller 103. Optionally, the second connecting end 241b can be electrically connected with at least one of the powder outlet blade 107, the developing roller 104 and the powder feeding roller 103, and then the at least one is contacted with the developer to charge the developer, so that the conveying of the developer is more smooth. The third connecting member 251 is farther away from the rotating axis A1 of the developing roller 104 than the rotating axis A2 of the driving gear 111 in the up-down direction, and both ends of the third connecting member 251 are configured as a spring structure to make the contact between the third connecting member 251 and the circuit board 210 and the metal frame 11 more stable. The third connecting member 251 includes a third connecting end 251a and a fourth connecting end 251b, the third connecting end 251a is in contact with the ground contact 215 of the circuit board 210, and at least a part of the fourth connecting end 251b is exposed on the top of the developing cartridge 100 and is in contact with the metal frame 11 of the image forming apparatus. The metal frame 11 inside the image forming apparatus is electrically connected with the ground protection circuit of the image forming apparatus to prevent the danger caused by the electric leakage of the image forming apparatus, that is, the ground contact 215 of the circuit board 210 is electrically connected to the ground protection circuit of the image forming apparatus, so that the safety of the developing cartridge 100 is improved.

[0146] As Figure 23As shown, the inside of the protective cover 230 is provided with a containing cavity 231, in the embodiment, the containing cavity 231 is used for containing the circuit board 210, in other embodiments of the utility model, the containing cavity 231 can also be used for containing a plurality of electronic components connected together, these connected electronic components have similar functions with the circuit board 210, which will not be repeated here. The circuit board 210 is detachably mounted in the containing cavity 231 by elastic buckle 231a or screw and the like, in the embodiment, the containing cavity 231 is provided with elastic buckle 231a on both sides in the front and rear direction and / or left and right direction to detachably mount the circuit board 231 inside the containing cavity 231. The top of the protective cover 230 is also provided with a through hole 232 for exposing the third connecting piece 251 at the top of the developing box 100, the through hole 232 is located on the side of the protective cover 230 away from the developing roller 104 in the front and rear direction, and at least a part of the third connecting piece 251 is exposed at 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 with the shell 101, in the embodiment, the protective cover 230 is fixedly connected with the top of the shell 101 in the up and down direction by screw, in other embodiments of the utility model, the protective cover 230 can also be fixedly connected with the top of the shell 101 by elastic buckle and the like, which is not limited, as long as the protective cover 230 is fixedly connected with the top of the shell 101.

[0147] As shown, Figures 22-24 The connecting arm 220 is movably connected to the front end of the protective cover 230 in the front and rear direction, one end of the connecting arm 220 is provided with a connecting shaft 220a, the connecting arm 220 can rotate around the axis of the connecting shaft 220a extending in the left and right direction, the other end of the connecting arm 220 is provided with an electrical contact part 220b, the electrical contact part 220b is configured as a protrusion formed outward from the bottom surface of the connecting arm 220, the electrical contact part 220b is located at the front end of the connecting arm 220 in the front and rear direction, in the state that the developing box 100 is installed to the drum box 50, the electrical contact part 220b contacts the electrifier 57 inside the drum box 50 to receive the power on the drum box 50; the first connecting piece 221 is configured as a torsion spring, the first connecting piece 221 is connected between the connecting arm 220 and the circuit board 210, for keeping the electrical connection between the connecting arm 220 and the circuit board 210 and keeping the connecting arm 220 in the position close to the shell 101 in the up and down direction, so that the electrical contact part 220b is located inside the opening 58 to contact the electrifier 57 in the state that the developing box 100 is installed to the drum box 50, so that the developing box 100 can receive the power of the drum box 50.

[0148] Further, as shown, Figure 24As shown, 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 mounted 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 relative to the housing 101 between a first position and a second position about the axis of the connecting shaft 220a. The first position is the position where the developing cartridge 100 can be easily installed into the drum box 50. The second position is the position of the connecting arm 220 when the developing cartridge 100 and the drum box 50 are connected. In the second position of the connecting arm 220, the developing cartridge 100 and the drum box 50 form an electrical connection. The first connector 221 is used to keep the connecting arm 220 in the second position; the connecting arm 220 has a limiting groove 220d at its rear end in the front-rear direction, and the receiving groove 234a has a limiting protrusion 234b at its rear end in the front-rear direction that cooperates with the limiting groove 220d to restrict the movement of the connecting arm 220 in the left-right direction. Figure 23 As shown in the figure, connecting arm 220(a) is in the first position, and connecting arm 220(b) is in the second position.

[0149] The process of electrically connecting the developing cartridge 100 and the drum cartridge 50 is further described below. The connecting arm 220 has a guide surface 220c at its front end in the front-rear direction. Figures 23-26 ),like Figures 14-15 As shown, when the developing cartridge 100 is installed into the drum housing 50, the user applies a pushing force to the developing cartridge 100 to move it from back to front along the guide portion 56 of the drum housing 50. During the movement of the developing cartridge 100, the guide surface 220c can abut against the drum frame 51 of the drum housing 50. Under the continuous action of the pushing force, the developing cartridge 100 continues to move forward along the guide portion 56. The guide surface 220c is subjected to the abutting force of the drum frame 51 and moves relative to the housing 101 from the second position to the first position. The connecting arm 220 in the first position can prevent connection. Interference occurs between the arm 220 and the drum frame 51 to ensure that the developing cartridge 100 can be smoothly installed into the drum 51. After the developing cartridge 100 is installed into the drum 50, the connecting arm 220 moves from the first position to the second position under the action of the first connecting member 221. During the movement of the connecting arm 220, the electrical contact part 220b of the connecting arm 220 enters the opening 58 of the drum 50 and contacts the live wire 57, thereby establishing an electrical connection between the developing cartridge 100 and the drum 50 so that the developing cartridge 100 can receive power from the drum 50.

[0150] like Figures 25-27 as well as Figure 27As shown, the electric contact part 220b is closer to the first side of the housing 101 than the second side of the housing 101 in the left-right direction, the electric contact part 220b is located at the right side of the protective cover 103 in the left-right direction, the electric contact part 220b is located at the right side of the electric contact surface 108a in the left-right direction, further, the electric contact part 220b is spaced apart from the electric contact surface 108a in the front-rear direction, the electric contact part 220b is farther away from the rotation axis A2 of the drive gear 111 than the rotation axis A1 of the developing roller 104 in the front-rear direction, interference between the electric contact surface 108a and the electric contact part 220b is prevented, the connecting arm 220 extends out of the housing 101 from back to front in the front-rear direction, the electric contact part 220b is located in front of the developing roller 104 in the front-rear direction, after the developing cartridge 100 is installed to the drum cartridge 50, the connecting arm 220 can extend to above the charger 57 in the drum cartridge 50, to facilitate the contact between the electric contact part 220b and the charger 57 in the drum cartridge 50.

[0151] Further, the electric contact assembly 200 is arranged close to the left side of the developing cartridge 100 in the left-right direction, as shown in the figure, Figures 28-38 As shown, the connecting arm 220 further comprises a rod body 220d for connecting the connecting shaft 220a and the electric contact part 220b, the distance between the right side wall of the rod body 220d and the leftmost end of the drive gear 111 is L1, L1 should be less than or equal to 50mm, to prevent the rod body 220d from blocking the laser channel of the image forming device and causing imaging defects; L1 should be greater than or equal to 20mm, so that the electric contact part 220b of the connecting arm 220 can easily enter the inside of the opening 58 to realize electrical connection. The right side of the protective cover 230 is provided with a clearance surface 230a close to the position of the developing roller 104 in the front-rear direction, the distance between the clearance surface 230a and the leftmost end of the drive gear 111 is L2, L2 should be less than or equal to 53mm, to prevent the protective cover 230 from blocking the laser channel of the image forming device and causing imaging defects; specifically, in this embodiment, L1 is set to 35mm, and L2 is set to 49mm. The electric contact part 220b on the connecting arm 220 is configured as a triangular prism extending in the left-right direction, the length of 220b in the left-right direction is L3, in order to enable the electric contact part 220b to smoothly enter the inside of the opening 58 while having 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 part 220b and the leftmost end of the drive gear 111 is L4, in order to enable the electric contact part 220b to be located within the projection range of the opening 58 in the up-down direction when the developing cartridge 100 is installed to the drum cartridge 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.

[0152] Embodiment 4:

[0153] AsFigures 28-29 The developing cartridge 100 of the embodiment 4 is shown in the utility model, and the same as the above-mentioned embodiments 1-3, the differences between the embodiment and the above-mentioned embodiments 1-3 are that the grounding in the developing cartridge 100 of the embodiment is different. Specifically, the developing cartridge 100 includes a storage chip 308, and the storage chip 308 is used for storing information of the developing cartridge 100.

[0154] As shown in the utility model, Figure 32 The storage chip 308 has a plurality of electrical contact surfaces 309, and the plurality of electrical contact surfaces 309 are arranged in the left-right direction, and the electrical contact surfaces 309 are composed of metal as a conductor. When the developing cartridge 100 is installed to the image forming device, the electrical contact surfaces 309 are in contact with the electrical contacts of the image forming device, so that the electrical terminals are in electrical conduction with the electrical contact surfaces 309. As a result, the image forming device can at least one of read information from the storage chip 308 and write information to the storage chip 308.

[0155] The plurality of electrical contact surfaces 309 have 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 at least have the GND (ground) terminal 309B, and in the state that the developing cartridge 100 is installed to the image forming device, the GND (ground) terminal 309B can be in electrical conduction with the negative pole of the power supply in the image forming device or the ground circuit in the image forming device; the storage chip 308 further includes a second electrical contact part 308b different from the plurality of electrical contact surfaces 309, and the second electrical contact part 308b is electrically connected with the GND (ground) terminal 309B in the plurality of electrical contact surfaces 309, so that the second electrical contact part 308b is in electrical conduction with the GND (ground) terminal 309B.

[0156] In order to ensure that the developer is smoothly transported inside the developing cartridge 100, the developing cartridge 100 is provided with an electrical connection assembly 300, and the electrical connection assembly 300 includes an electrical connection end, a power supply end and a voltage reduction circuit, and the electrical connection assembly 300 includes a circuit board 310, a connecting arm 320, a protective cover 330 and a plurality of connecting pieces. Similar to the above-mentioned embodiment 3, the connecting pieces include but are not limited to a first connecting piece 321 for connecting the circuit board 310 and the connecting plate 320, a second connecting piece 341 for connecting the powder outlet knife 107 and the circuit board 310.

[0157] As shown in the utility model, Figures 32-35 In the embodiment, the circuit board 310 is not electrically connected with the metal frame inside the image forming device, so in the embodiment, the connecting pieces further include a third connecting piece 351 for electrically connecting the circuit board 310 and the second electrical contact part 308b in the storage chip 308.

[0158] The first connecting member 321, the second connecting member 341 and the third connecting member 351 are all made of conductive material, preferably, the first connecting member 321, the second connecting member 341 and the third connecting member 351 are all made of conductive metal material. The first connecting member 321 and the second connecting member 341 are similar to the arrangement in the above-mentioned embodiment 3, and here, no more redundant description is made. The third connecting member 351 has a first end 351a and a second end 351b, the first end 351a of the third connecting member 351 is electrically connected with the circuit board 310, and the second end 351b of the third connecting member 351 is electrically connected with the storage chip 308.

[0159] As shown in Figures 31-32 the circuit board 310 includes the first resistor 311, the second resistor 312, the power contact 313, the power supply contact 314 and the ground contact 315, which are similar to the above-mentioned embodiment 3. The third connecting member 351 extends from the top of the developing cartridge 100 to the bottom of the developing cartridge 100 in the up-down direction, the first end 351a of the third connecting member 351 is electrically connected with the ground contact 315 of the circuit board 310, and the second end 351b of the third connecting member 351 is electrically connected with the second contact part 310 of the storage chip 308, thus, the ground contact 315 of the circuit board 310 is electrically connected with the second electrical contact part 308b of the storage chip 308, and further, the ground contact 315 of the circuit board 310 is electrically connected with the GND (ground) terminal 309B of the storage chip 308, that is to say, in the embodiment, the developing cartridge 100 realizes the ground setting of the power contact assembly 300 in the developing cartridge 100 through the electrical connection between the power contact assembly 300 and the storage chip 308, and the structure is simpler, and is more conducive to the miniaturization of the developing cartridge 100. Further, the power contact assembly 300 realizes the voltage reduction function, under the action of the power provided by the power contact assembly 300, the developer inside the developing cartridge 100 is smoothly transported to the photosensitive drum 52 of the drum cartridge 50, and the developing function of the developing cartridge 100 is realized.

[0160] Specifically, as shown in Figures 36-37 and Figure 31 the connecting arm 320 can move relative to the housing 101 between a first position and a second position, the first position of the connecting arm 320 is the 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, so that the manufacturer of the developing cartridge 100 can more conveniently package and transport the developing cartridge 100. The second position of the connecting arm 320 is the unfolded position of the connecting arm 320, when the connecting arm 320 is in the second position, the connecting arm 320 is in contact with the electrifier in the drum cartridge, so as to realize the electrical conduction between the connecting arm 320 and the drum cartridge, thereby realizing the power contact of the developing cartridge 100.

[0161] To realize the movement of the connecting arm 320 between the first position and the second position, the developing cartridge 100 is further provided with a driving assembly for driving the connecting arm 320 to move from the first position to the second position, at least a part of the driving assembly is capable of abutting against the drum cartridge to drive the connecting arm 320 to move from the first position to the second position during the process of installing the developing cartridge 100 to the drum cartridge, the driving assembly is arranged on the left side of the housing 101 in the left-right direction, and is located between the housing 101a and the left cover 101b in the left-right direction.

[0162] Further, the connecting arm 320 comprises a shaft 320b and a gear portion 320c coaxially arranged 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 the first position and the second position. The gear portion 320c is configured as a driven portion for receiving a driving force to drive the connecting arm 320 to move from the first position to the second position. The developing cartridge 100 is further provided with a reset member for applying a restoring force to the connecting arm 320, so as to drive the connecting arm 320 to move from the second position to the first position, in the embodiment, the reset member is provided as the first connecting member 321, and the first connecting member 321 is configured as a conductive torsion spring.

[0163] The driving assembly at least comprises but is not limited to a force-receiving member and a force-applying member. As shown in Figures 36-37 and Figure 30 In the embodiment, the developing cartridge 100 comprises a force-receiving rod 361 and a force-applying member 362. The force-receiving rod 361 and the force-applying member 362 are both arranged on the left side of the housing 101 and are movable relative to the housing 101 between the first position and the second position. When the force-receiving rod 361 is in the first position, the first end 361a of the force-receiving rod 361 is located at the bottom of the housing 101 in the up-down direction, and when the developing cartridge 100 is installed to the drum cartridge, under the action of the downward pushing force applied by the user to the developing cartridge 100, the first end 361a of the force-receiving rod 361 is capable of abutting against the drum frame 51 in the drum cartridge 50, at this time, the drum frame 51 generates a reaction force on the force-receiving rod 361, thereby driving the force-receiving rod 361 to move from the first position to the second position. The force-applying member 362 is movable according to the movement of the force-receiving rod 361, and 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-down direction, the force-applying member 362 is closer to the upper side of the developing cartridge 100 than the force-receiving rod 361, and in the left-right direction, the force-applying member 362 is closer to the left side of the housing 101 than the electric contact portion 320a on the connecting arm 320.

[0164] Furthermore, the force-applying member 362 can move from a first position to a second position according to the movement of the force-receiving member 361. The force-applying member 362 includes at least a toothed portion connected to the connecting arm 320 to drive the connecting arm 320 from the first position to the second position. In this embodiment, the force-applying member 362 is constructed as a rack, and the force-applying member 362 has a first toothed portion 362a and a second toothed portion 362b. The first toothed portion 362a of the force-applying member 362 is used to receive the driving force of the force-receiving member 361 and move relative to the housing 101 in the front-rear direction. The second toothed portion 362b is used to connect with the gear portion 320c of the connecting arm 320 to drive the connecting arm 320 from the first position to the second position.

[0165] Furthermore, the developing cartridge 100 also includes a transmission member 363 connected between the force-receiving member 361 and the force-applying member 362. The transmission member 363 includes a force-receiving portion 363a connected to the second end 361b of the force-receiving member 361a, and a force-applying portion 363b connected to the first toothed portion 362a of the force-applying member 362, for transmitting the driving force of the force-receiving member 361 to the force-applying member 262.

[0166] like Figure 38 and Figures 39-43 As shown, in this embodiment, the developing cartridge 100 includes a detection part different from those in embodiments 1-3 described above. When the developing cartridge 100 is installed in the imaging device, the detection part of the developing cartridge 100 is used to transmit information about the developing cartridge 100 to the imaging device, enabling the imaging device to identify the developing cartridge 100. Specifically, the developing cartridge 100 includes a light-emitting element 317 as the detection part. The light-emitting element 317 can transmit information about the developing cartridge 100 to the imaging device by intermittently emitting infrared light. The developing cartridge 100 also includes a control chip 317a and a trigger switch 317b. The control chip 317a is used to control the on / off state of the light-emitting element 317 and to provide power to the light-emitting element 317. Trigger switch 317b responds to the rotation of drive gear 111 by sending a start signal to control chip 317a, thereby triggering chip 317 to start. Furthermore, the developing cartridge 100 also includes a trigger gear 317c for contacting trigger switch 317b. Trigger gear 317c rotates about a trigger gear axis extending in the left-right direction according to the rotation of drive gear 111 and has contact and non-contact positions with trigger switch 317b. When trigger gear 317c is in the contact position, it contacts trigger switch 317b, causing trigger switch 317b to release an activation signal to control chip 317a, thereby activating control chip 317a to control the light-emitting element 317 to transmit information from developing cartridge 100 to imaging device. When trigger gear 317c is in the non-contact position, trigger switch 317b stops releasing activation signals to control chip 317a, thus keeping control chip 317b in a dormant state, thereby achieving effective control of light-emitting element 317.

[0167] The setting of the light emitting member 317 replaces the role of the detected protrusion, simplifies the structure of the developing cartridge 100, reduces the production cost of the developing cartridge 100, and is conducive to the miniaturization of the developing cartridge 100. Meanwhile, the light emitting member 317 has higher stability than the mechanical member used in the prior art.

[0168] Embodiment 5

[0169] As Figure 39 shown in the embodiment 5 of the developing cartridge of the utility model, the same as the above-mentioned embodiment 4, the same part of the embodiment is not repeated, and the difference between the embodiment and the above-mentioned embodiment 4 is that the setting of the storage chip in the developing cartridge 100 of the embodiment is different from the above-mentioned embodiment. Specifically, the developing cartridge 100 includes a storage chip 408 and a chip support 410 for supporting the storage chip 408, and the storage chip 408 is used to store the information of the developing cartridge 100.

[0170] As Figure 41 and Figure 40 shown, the storage chip 408 is arranged on the left side of the developing cartridge 100 in the left-right direction, and the storage chip 408 includes a plurality of electrical contact surfaces 409, and the electrical contact surfaces 409 are directed to the upper side of the developing cartridge 100 in the up-down direction. The plurality of electrical contact surfaces 409 at least includes a GND (ground) terminal 409b, and in the state that the developing cartridge 100 is installed to the image forming device, the GND (ground) terminal 409b is electrically conducted with the negative pole of the power supply in the image forming device or the ground circuit in the image forming device. The developing cartridge 100 further includes a second electrical contact part 408b, which is arranged at intervals from the electrical contact surface 409, and the second electrical contact part 408b is electrically conducted with the GND (ground) terminal 409b.

[0171] As shown in the above-mentioned embodiment 4, the developing cartridge 100 further includes an electrical connection assembly 300, and the electrical connection assembly 300 includes a circuit board 310, a connecting arm 320, a protective cover 330 and a plurality of connecting members. The circuit board 310 includes a first resistor 311, a second resistor 312, an electrical connection contact 313, a power supply contact 314 and a ground contact 315. As Figure 40 shown, the developing cartridge 100 further includes an electrical connecting member 451 for connecting the electrical connection assembly 300 and the storage chip 408, and the electrical connecting member 451 includes a first end 315a in contact with the ground contact 315 in the circuit board 310, and a second end 315b in contact with the second contact part 408b in the storage chip 408 in the developing cartridge 100. That is, the ground contact 315 of the circuit board 310 is electrically conducted with the second electrical contact part 408b of the storage chip 408 through the electrical connecting member 315. At least a part of the electrical connecting member 315 extends in the left-right direction.

[0172] AsFigures 42-43 as well as Figures 44-45 As shown, the developing cartridge 100 also includes a chip support 410 for supporting the memory chip 408. The chip support 410 is disposed on the left side of the developing cartridge 100 in the left-right direction. Specifically, the cover 101b is fixedly disposed on the left side surface of the toner cartridge 101 in the left-right direction, and the chip support 410 is fixedly connected to the outer side of the cover 101b away from the toner cartridge 101 in the left-right direction by screws / elastic clips or the like. In the left-right direction, the electrical contact surface 409 is spaced apart from the connecting arm 320. In the front-back direction, in the installed state, the electrical contact portion 320a of the connecting arm 320 is disposed at the front end of the developing cartridge 100, while the electrical contact surface 409 is close to the rear end of the developing cartridge 100. That is to say, the distance between the electrical contact surface 409 and the electrical contact portion 320a in the developing cartridge 100 is relatively large, avoiding electrical interference between the power connection component 300 and the memory chip 408, and improving the stability of the power connection component 300 and the memory chip 408 of the developing cartridge 100.

[0173] Example 6:

[0174] like Figures 44-45 The diagram illustrates a developing cartridge according to Embodiment 6 of this utility model. The similarities to Embodiment 5 described above will not be repeated here. The difference between this embodiment and Embodiment 5 lies in the following: the developing cartridge 100 in this embodiment has a different configuration than that in Embodiment 5. Specifically, in this embodiment, the developing cartridge 100 includes a forced pushing portion 506 and a lifted portion 520.

[0175] like Figure 45 As shown, the forced pusher 506 is disposed on both sides of the housing 101 in the left-right direction. When the developing cartridge 100 is installed in the drum housing, the forced pusher 506 receives a force exerted by the forced pusher in the drum housing on the developing cartridge 100, causing the developing roller 120 in the developing cartridge 100 to move closer to the photosensitive drum in the drum housing. The forced pusher 506 extends in the left-right direction; specifically, the forced pusher 506 is constructed as a column extending outward from the side surface of the toner cartridge 101a in the left-right direction. Figure 45 As shown, when the developing cartridge 100 is installed in the drum cartridge, the forced push part 506 is located between the electrical contact part 320a of the connecting arm 320 and the electrical contact surface 409 of the storage chip 408 in the front-back direction. In this way, when the developing cartridge 100 is installed in the drum cartridge, the forced push part 506 can better receive the force applied by the drum cartridge to the developing cartridge 100 to bring the developing roller 120 closer to the photosensitive drum, so that the connection between the electrical contact part 320a of the developing cartridge 100 and the charger in the drum cartridge is more stable.

[0176] like Figures 44-45As shown, the lifting part 520 is arranged at the rear side of the shell 101 in the front-rear direction, and in the state that the developing cartridge 100 is installed to the image forming device, the lifting part 520 can receive the force applied by the image forming device to the developing cartridge 100, so as to make the electric contact surface 409 of the developing cartridge 100 close to the electric contact member inside the image forming device. The lifting part 520 is arranged at both ends of the developing cartridge 100 opposite to the electric contact part 320a in the front-rear direction, so as to avoid the interference between the electric contact part 320a of the developing cartridge 100 and the image forming device.

[0177] As shown in the figure, Figure 45 the electric contact part 320a, the developing roller 120, the forced pushing part 506, the electric contact surface 409 and the lifting part 520 are arranged from front to back in the front-rear direction. When the lifting part 520 receives the force of the image forming device, the lifting part 520 drives the rear side of the developing cartridge 100 to be upturned around the rotation axis of the developing roller 120, the electric contact surface 409 moves upward together with the rear side of the developing cartridge 100 and contacts with the electric contact member inside the image forming device, so as to make the storage chip 408 of the developing cartridge 100 establish the electric connection with the image forming device. Meanwhile, under the driving of the lifting part 520, the electric contact part 320a located in front of the rotation axis of the developing roller 120 in the front-rear direction moves downward and contacts more closely with the electric charger of the drum cartridge, so as to improve the stability of the electric connection between the electric contact assembly 300 of the developing cartridge 100 and the electric charger of the drum cartridge.

[0178] As shown in the figure, Figures 46-54 the electric contact part 320a is arranged at the front end of the connecting arm 320 in the front-rear direction, and the electric contact part 320a extends the extension part 320a1 in the up-down direction, the extension part 320a1 is made of the deformed conductive material, so as to make the electric contact part 320a adapt to the larger production error and improve the adaptability of the developing cartridge 100. Preferably, the extension part 320a1 is made of the conductive rubber material.

[0179] Embodiment 7:

[0180] As shown in the figure, Figures 46-50 the developing cartridge of embodiment 7 in the utility model, the same as the above-mentioned embodiment 6, the differences between the embodiment and the above-mentioned embodiment 6 are that: the forced pushing part, the gear train and the electric contact assembly 300 in the developing cartridge 100 of the embodiment are different from the above-mentioned embodiments 1-6.

[0181] Specifically, as shown in the figure, Figures 51-53As shown, the developing cartridge 100 extends outward from both sides in the left-right direction with guided portions 601. When viewed in the left-right direction, at least a portion of the guided portions 601 overlaps with the developing roller 120. The developing cartridge 100 also includes a separating portion 602 and a forced pushing portion 603. The separating portion 602 can receive external force to drive the developing cartridge 100 in a direction that separates the developing roller 120 from the photosensitive drum of the drum housing. The forced pushing portion 603 can receive external force to drive the developing cartridge 100 in a direction that brings the developing roller 120 into contact with the photosensitive drum of the drum housing. In this embodiment, the guided portion 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 developing cartridge 100, and the cover plate 606 extends in the left-right direction. In the front-rear direction, the cover plate 606 overlaps with at least a portion of the guided portion 601, the separated portion 602, and the forced pushing portion 603, thereby improving the deformation resistance of the housing 101 in the left-right direction.

[0182] like Figures 46-48 As shown, the developing cartridge 100 includes a gear system for driving components inside the developing cartridge 100. The gear system includes, but is not limited to, a coupling gear 611, a developing roller gear 612, a powder feeding roller gear 613, and multiple connecting gears. The coupling gear 611 receives driving force from outside the developing cartridge 100. The powder feeding roller gear 613 is connected to the coupling gear 611. The developing roller gear 612 is connected to the coupling gear 611 via connecting gears. An even number of connecting gears are provided between the developing roller gear 612 and the coupling gear 611; that is, 2n (n is a positive integer) connecting gears are provided between the developing 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 developing cartridge 612 and the coupling gear 611. In the front-rear direction, a portion of the forced pushing portion 603 is closer to the developing roller 120 than the coupling gear 611.

[0183] The developing cartridge 100 is also provided with a stirring rack and a stirring rack gear 614 connected to the end of the stirring rack. The stirring rack gear 614 is meshed with the coupling gear 611 via a third connecting gear 617. In the front-back direction, the axis of rotation of the stirring rack gear 614 is closer to the developing roller 120 than the axis of rotation of the third connecting gear 617.

[0184] Combination Figures 53-54 as well as Figure 54 As shown, the developing cartridge 100 includes a power receiving assembly 300 serving as an electrode, which is located closer to the left side of the developing cartridge 100 in the left-right direction relative to the right side. The power receiving assembly 300 includes a connecting arm 320 extending in the front-rear direction, and an electrical contact portion 620a is disposed at the end of the connecting arm 320 in the front-rear direction. Figure 54As shown, the drum cartridge 50 includes a photosensitive drum 52 and a charger 57, which is arranged on one side of the photosensitive drum 52 in the radial direction and is used to charge the photosensitive drum 52, at least a part 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 for exposing the photosensitive drum 52 when the drum cartridge 50 is installed to the image forming device, so that the laser member in the image forming device irradiates the photosensitive drum 52. Figure 54 As shown, in the state that the developing cartridge 100 is installed to the drum cartridge 50, the electric contact part 620a of the developing cartridge 100 passes through the laser port of the drum cartridge 50 and is connected with the charger 57 of the drum cartridge 50, so that the electric contact part 620a receives the power on the charger 57 in the drum cartridge 50 and delivers the power to the developer delivery member in the developing cartridge 100.

[0185] Further, the electric contact part 620a is made of a conductive material which can be deformed, so that the electric contact part 620a can be more easily contacted with the charger 57, thus the requirement for the machining precision of the developing cartridge 100 can be effectively reduced. Specifically, in the embodiment, the electric contact part 620a is arranged as conductive rubber.

[0186] Further, as shown, Figure 54 As shown, the developing cartridge 100 includes a chip 608, the chip 608 has an electric contact surface 609 which is electrically connected with the image forming device, the electric contact surface 609 at least includes a GND (ground) terminal, the chip 608 is supported on the left side of the developing cartridge 100 in the left-right direction by a chip support 610. The electric connection assembly 300 of the developing cartridge 100 includes a circuit board 310, an electric connection piece 651 is arranged between the circuit board 310 and the chip 608, at least a part of the electric connection piece 651 extends in the left-right direction, a first end 651a of the electric connection piece 651 is electrically connected with the ground terminal 315 of the circuit board 310, and a second end 651b of the electric connection piece 651 is electrically connected with the GND (ground) terminal of the chip 608.

[0187] Functions and beneficial effects:

[0188] In the multiple schemes of the developing cartridge, the power supply device is redesigned, so that the developing cartridge can receive the power on the drum cartridge from the drum cartridge and deliver the power to the developing roller, the powder feeding roller and the powder discharging knife, thereby ensuring the imaging quality of the developing cartridge. Meanwhile, the direct contact between the developing cartridge and the electrophotographic image forming device is reduced, the mutual collision caused by the vibration generated when the developing cartridge works is avoided, the service life of the developing cartridge and the electrophotographic image forming device is effectively improved. In addition, the power supply device for supplying power to the developing cartridge on the electrophotographic image forming device can be cancelled, thereby reducing the production cost of the electrophotographic image forming device.

[0189] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A developing cartridge detachably mountable to a drum cartridge, the developing cartridge comprising: a housing for accommodating a developer, the housing having a first side and a second side disposed apart in a first direction, the housing having a third side and a fourth side disposed apart in a second direction intersecting the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, the developing roller being located at the third side of the housing in the second direction; an input gear for receiving a driving force from outside of the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located at the first side of the housing in the first direction; a chip having an electrical contact surface, the electrical contact surface being located at the first side of the housing; characterized by further comprising an electrode electrically connected to a component of the developing cartridge; the electrode including an electrical contact portion contactable with a power supply member outside of the developing cartridge; in the first direction, the electrical contact portion being closer to the first side of the housing than to the second side of the housing.

2. The process cartridge according to claim 1, wherein the electrode further including a power supply portion and a ground portion; the power supply portion being contactable with and electrically connected to the component of the developing cartridge, the ground portion being for contact with a ground member and / or a power source negative pole outside of the developing cartridge; the power supply portion and the ground portion being electrically connectable to the electrical contact portion.

3. The process cartridge of claim 2 wherein, in the first direction, the power supply portion being closer to the first side of the housing than to the second side of the housing.

4. The process cartridge of claim 2 wherein, in the first direction, the ground portion being 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 ground portion being farther from the developing roller axis of rotation than the input gear axis of rotation.

5. The process cartridge of claim 2, wherein, the chip having a ground contact, the ground portion being electrically connectable to the ground contact.

6. The process cartridge of claim 1, wherein, in the second direction, the electrical contact portion being farther from the input gear axis of rotation than the developing roller axis of rotation.

7. The process cartridge of claim 1, wherein, further comprising a detected protrusion movable relative to the housing; in the first direction, the detected protrusion being closer to the second side of the housing than to the first side of the housing.

8. The process cartridge of claim 1, wherein, further comprising a light emitting member; in the first direction, the light emitting member being closer to the second side of the housing than to the first side of the housing.

9. The process cartridge of claim 1, wherein, in a state where the developing cartridge is mounted to the drum cartridge, the electrical contact portion being contactable with a charger inside of the drum cartridge.

10. The developer cartridge of claim 1, wherein, in the second direction, at least a portion of the electrical contact portion being farther from the fourth side of the housing than the developing roller.

11. The process cartridge of claim 1, wherein, in the first direction, a maximum distance between an end of the input gear and the electrical contact portion is L, where 31 mm < L < 41 mm.

12. The process cartridge of claim 1, wherein, the electrical contact portion extending in the first direction, a length of the electrical contact portion in the first direction being S, where 2 mm ≤ S ≤ 10 mm.

13. The process cartridge of claim 1, wherein, The power contact portion is movable relative to the housing between a first position and a second position.

14. A developing cartridge, the developing cartridge comprising: a housing to contain a developer, the housing having a first side and a second side disposed apart in a first direction, the housing having a third side and a fourth side disposed apart in a second direction that intersects the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, the developing roller being located at the third side of the housing in the second direction; an input gear to receive a driving force from outside of the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located at the first side of the housing in the first direction; a chip having an electrical contact surface, the electrical contact surface being located at the first side of the housing; characterized by further comprising an electrode electrically connected to components of the developing cartridge; the electrode including a power contact portion contactable with a power supply member from outside of the developing cartridge; the power contact 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 process cartridge of claim 14 wherein, further comprising a resilient member to hold the power contact portion at the first position.

16. The process cartridge of claim 14 wherein, in the second direction, the first position of the power contact portion is closer to the electrical contact surface than the second position of the power contact portion.

17. The process cartridge of claim 14 wherein, further comprising a force receiving portion to receive a force from outside of the developing cartridge to drive the electrode to move from the first position to the second position.

18. A developing cartridge, the developing cartridge comprising: a housing to contain a developer, the housing having a first side and a second side disposed apart in a first direction, the housing having a third side and a fourth side disposed apart in a second direction that intersects the first direction; a developing roller rotatable about a developing roller axis extending in the first direction, the developing roller being located at the third side of the housing in the second direction; an input gear to receive a driving force from outside of the developing cartridge, the input gear being rotatable about an input gear axis extending in the first direction, the input gear being located at the first side of the housing in the first direction; a chip having an electrical contact surface, the electrical contact surface being located at the first side of the housing; characterized in that the developing cartridge further comprises an electrode to receive electric power from outside of the developing cartridge and deliver to components of the developing cartridge; the electrode including a power contact portion, a ground contact portion, and a voltage regulating unit, the power contact portion being contactable with a power supply member from outside of the developing cartridge, the ground contact portion being contactable with a ground member and / or a negative terminal of a power source from outside of the developing cartridge; in the first direction, the power contact portion is closer to the first side of the housing relative to the second side of the housing; the power contact portion is electrically connected with the ground contact portion and the voltage regulating unit; the power contact portion is electrically connected with the ground contact portion and the voltage regulating unit; In a state where the grounding portion is electrically connected with a grounding member and / or a power supply negative electrode outside the developing cartridge, the voltage regulating unit is configured to regulate a first voltage applied to the developing cartridge to a second voltage different from the first voltage.

19. The developer cartridge of claim 18, wherein, The first voltage is greater than the second voltage.

20. The developer cartridge of claim 18, wherein, The power supply portion is configured to contact and electrically connect with a component of the developing cartridge. A first impedance unit is electrically connected between the power supply portion and the grounding portion. A second impedance unit is electrically connected between the power supply portion and the grounding portion.

21. The developer cartridge of claim 20, wherein, The first impedance unit has a resistance value R1, and the second impedance unit has a resistance value R2; and 5MΩ≤R1=R2≤10MΩ.

Images