Developing box

Abstract

The utility model discloses a developing box. The developing box comprises a shell, a developing roller; an input gear; a chip; the first protrusion is located on one side of the shell in the first direction, and the first protrusion can receive force outside the developing box to move relative to the shell; the second protrusion is located on the side, close to the first protrusion, of the shell in the first direction, and the second protrusion can move according to movement of the first protrusion; the third protrusion is located on the other side, away from the first protrusion, of the shell in the first direction, and the third protrusion can move according to movement of the first protrusion; when the second protrusion and the third protrusion move, the developing roller moves from a first position in contact with the photosensitive drum to a second position separated from at least a part of the photosensitive drum according to the movement of the first protrusion; according to the developing box disclosed by the utility model, the structures of the developing box and the drum box are simplified, the production cost of the developing box can be effectively reduced, and the requirement of miniaturization of the developing box is favorably met.

Description

Technical Field

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

[0002] The prior art discloses a developing box that can be installed together with a drum box to an electronic photographic imaging device, the developing box including a housing, a developing roller, a powder feeding roller, a driving unit, an electrode and a storage medium; the drum box includes a housing for accommodating the developing box and a photosensitive drum for performing imaging operations. When the electronic photographic imaging device performs imaging operations, the developing roller needs to be in contact with the photosensitive drum, and when the electronic photographic imaging device stops the imaging operation, the developing roller and the photosensitive drum need to be separated. Specifically, one end of the developing box includes a protrusion for receiving a forced thrust from the drum box to separate the developing roller and the photosensitive drum, and the other end of the developing box is provided with a separation member for receiving a forced thrust from the electronic photographic imaging device to separate the developing roller and the photosensitive drum.

[0003] The above-mentioned developing box is for controlling the contact and separation between the developing roller and the photosensitive drum. The two ends of the developing box need to receive the force from the drum box and the electronic photographic imaging device respectively, and these two forces need to act on the developing box at the same time during use; this arrangement increases the requirements for the electronic imaging device used in conjunction with the developing box, increases the complexity of the electronic imaging device used in conjunction with the developing box; increases the use cost of the developing box, reduces the adaptability of the developing box, and is not conducive to the promotion and application of the developing box. Utility Model Content

[0004] Therefore, the utility model provides a developing box to solve the above technical problems, which is mainly achieved through the following technical solutions:

[0005] A developing box can be detachably installed in a drum box having a photosensitive drum, and the developing box includes:

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

[0007] A developing roller rotatable about a developing roller axis extending in a first direction, the developing roller being disposed on a third side of the housing in a second direction;

[0008] An input gear, used for receiving a driving force, the input gear being located at a first side of the housing in a first direction;

[0009] A chip having an electrical contact surface, the electrical contact surface being located on a first side of the housing in a first direction;

[0010] It is characterized by further comprising:

[0011] A first protrusion is located at one side of the housing in a first direction, and the first protrusion can receive a force from outside the developing cartridge and move relative to the housing;

[0012] A second protrusion is located on a side of the housing close to the first protrusion in the first direction, and the second protrusion can move according to the movement of the first protrusion;

[0013] A third protrusion is located at the other side of the housing away from the first protrusion in the first direction, and the third protrusion can move according to the movement of the first protrusion;

[0014] When the second protrusion and the third protrusion move, the developing roller moves from a first position in contact with the photosensitive drum to a second position separated from at least a portion of the photosensitive drum according to the movement of the first protrusion.

[0015] Furthermore, it also includes a rod, which extends from the first side of the shell to the second side of the shell, and is used to transmit the driving force of the first protrusion to the third protrusion.

[0016] Further, the rod can move relative to the housing in the first direction as the first protrusion moves.

[0017] Furthermore, the rod is integrally formed with the second protrusion and the third protrusion.

[0018] Further, the first protrusion is located on the first side of the housing in the first direction.

[0019] Further, the developing roller includes a colloid portion, and in the first direction, the first protrusion is spaced apart from the colloid portion, and the first protrusion is farther away from the second side of the housing than the colloid portion.

[0020] Further, in the second direction, the first protrusion is closer to the developing roller than the input gear.

[0021] Further, in the first direction, the first protrusion protrudes from the second side of the housing.

[0022] Further, in the second direction, the first protrusion is closer to the fourth side of the shell relative to the third side of the shell.

[0023] Furthermore, it also includes an electrode having an electrical contact portion, which is exposed on the second side of the shell in the first direction, and in the second direction, the first protrusion is closer to the fourth side of the shell than the electrical contact portion.

[0024] Beneficial effects:

[0025] Compared with the prior art, the developer box of the utility model is provided with a force-bearing member including a force-bearing protrusion only on one side of the shell, and the force-bearing member can receive external force to drive the developing roller to separate from the photosensitive drum; the developing box can realize the separation of the developing roller and the photosensitive drum when only receiving the forced pushing force of the imaging device or the drum box, thereby improving the adaptability of the developing box and facilitating the rapid promotion and application of the developing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of a drum box in the prior art;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of one side of the drum box in the length direction of the embodiment 1 of the utility model;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the developing box in Embodiment 1 of the present utility model;

[0029] Figure 4 It is a partial three-dimensional structural schematic diagram of the left end portion of the developing box in another embodiment of Example 1 of the utility model;

[0030] Figure 5 It is a left side schematic diagram along the left-right direction of the developing box protective cover in the embodiment 1 of the utility model in a hidden state;

[0031] Figure 6 It is a three-dimensional structural schematic diagram of another angle of the developing box in Embodiment 1 of the utility model;

[0032] Figure 7 is a cross-sectional view of the developing cartridge in the vertical direction of Embodiment 1 of the utility model;

[0033] Figure 8 It is a partially exploded schematic diagram of the developing box in Embodiment 1 of the present utility model;

[0034] Fig. 9 It is a left side view of the developing box in the state where the force bearing member in the first embodiment of the utility model is in the first position;

[0035] Fig.10 It is a left side view of the developing box in the state where the force bearing member in the first embodiment of the utility model is in the second position;

[0036] Fig.11 It is a partially exploded schematic diagram of a developing cartridge according to another embodiment of Example 1 of the present utility model;

[0037] Fig.12 It is a partial three-dimensional schematic diagram of the left end of the developing cartridge in the disassembled state in Embodiment 1 of the present utility model;

[0038] Fig.13It is a partially exploded schematic diagram of the developing box in Embodiment 2 of the present utility model;

[0039] Fig.14 It is a partial left view of the developing box in the state where the force-bearing member in Embodiment 2 of the utility model is in the first position;

[0040] Fig.15 It is a partial left view of the developing box in the state where the force-bearing member in Embodiment 2 of the utility model is in the second position;

[0041] Fig.16 It is a partially exploded schematic diagram of another angle of the developing cartridge in Embodiment 3 of the present utility model;

[0042] Fig.17 It is a left side view of the developing box in the state where the force bearing member in Embodiment 3 of the utility model is in the first position;

[0043] Fig.18 In the utility model embodiment 3 Fig.17 Middle E shows the enlarged image;

[0044] Fig.19 It is a left side view of the developing box in the state where the force bearing member of Embodiment 3 of the utility model is in the second position;

[0045] Fig. 20 In the utility model embodiment 3 Fig.19 Middle F shows the enlarged image;

[0046] Fig.21 is a schematic diagram of the three-dimensional structure of the force-bearing member in Embodiment 3 of the present utility model when the force-bearing member is in the first position;

[0047] Fig. 22 is a schematic diagram of the three-dimensional structure of the force-bearing member in Embodiment 3 of the present utility model when the force-bearing member is in the second position;

[0048] Fig.23 It is a partially exploded schematic diagram of the developing box in Embodiment 4 of the present utility model;

[0049] Fig.24 It is a partial left view of the developing box in the state where the force-bearing member in Embodiment 4 of the utility model is in the first position;

[0050] Fig.25 It is a partial left view of the developing box in the state where the force-bearing member in Embodiment 4 of the utility model is in the second position;

[0051] Fig.26 It is a three-dimensional structural schematic diagram of the force-bearing member in Embodiment 5 of the present utility model;

[0052] Fig. 27It is a partial schematic diagram of the right side of the developing box in the state where the force-bearing member in Embodiment 5 of the utility model is in the first position;

[0053] Fig.28 It is a partial schematic diagram of the right side of the developing box in the state where the force-bearing member in Embodiment 5 of the utility model is in the first position;

[0054] Fig.29 It is a partial cross-sectional view of the drum box observed along the length direction when the force-bearing member in Embodiment 5 of the utility model is in the first position;

[0055] Fig.30 It is a partial cross-sectional view of the drum box observed along the length direction when the force-bearing member in Embodiment 5 of the utility model is in the second position;

[0056] Fig.31 It is a three-dimensional structural schematic diagram of the force-bearing member in Embodiment 6 of the present utility model;

[0057] Fig.32 It is a partial left view of the developing box in the state where the force-bearing member in Embodiment 6 of the utility model is in the first position;

[0058] Fig.33 It is a partial left view of the developing box when the force-bearing member in Example 6 of the utility model is in the second position. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and technical effect of the embodiment of the utility model clearer, the technical scheme of the developer box of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is only a preferred embodiment of the utility model, not all embodiments. Based on the embodiment of the utility model, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0060] Embodiment 1:

[0061] Figure 1-2 A drum cartridge 50 of the prior art is shown in FIG. Figure 3-7 , a developing box 100 of the present invention is shown in the figure. The developing box 100 can be installed in a detachable manner into the drum box 50, and the two can be installed in an electronic photographic imaging device (hereinafter referred to as "imaging device") in an integrated manner to perform imaging operations. The imaging device is provided with a receiving chamber (not shown) for receiving the developing box 100 and the drum box 50, and a chip slot (not shown) for receiving the chip 140 and the chip frame 104 on the developing box 100 is provided on one side of the receiving chamber, and an electric contact (not shown) for contacting with the electric contact surface 141 of the chip 140 to form an electrical connection is provided inside the chip slot.

[0062] A plurality of combinations of drum boxes 50 and developer boxes 100 may be installed inside the imaging device. Specifically, four combinations of drum boxes 50 and developer boxes 100 may be installed inside the imaging device, that is, the imaging device may accommodate four drum boxes 50 and four developer boxes 100; the four developer boxes 100 are filled with developers of different colors. When performing an imaging operation, one or more groups of developer boxes 100 and drum boxes 50 are required to participate in order to form images of different colors. When a certain group of developer boxes 100 and drum boxes 50 needs to participate in the imaging operation, the corresponding developer roller 120 in the developer box 100 and the photosensitive drum 52 in the drum box 50 need to be in a contact state, and when a certain group of developer boxes 100 and drum boxes 50 do not participate in the imaging operation, the corresponding developer roller 120 and the photosensitive drum 52 are in a separated state to improve the imaging quality of the imaging device.

[0063] like Figure 1-2 As shown, the drum box 50 includes a drum frame 51 and a photosensitive drum 52. The drum frame 51 is used to accommodate the developing box 100. The photosensitive drum 52 is rotatably supported on one side of the drum frame 51 in the width direction. The photosensitive drum 52 can rotate around the photosensitive drum axis extending in the length direction of the drum box 50. The drum frame 51 is provided with guide grooves 53 on both sides in the length direction. The guide grooves 53 are used to guide the developing box 100 to be installed on the drum box 50. The guide grooves 53 are located on the side of the drum frame 51 close to the photosensitive drum 52 in the width direction. The drum frame 51 is also provided with pushing portions 55 on both sides in the length direction. When the developing box 100 is installed in the drum box 50, the pushing portions 55 can apply a pushing force to the developing box 100 to make the developing box 100 contact more closely with the photosensitive drum 52 of the drum box 50 to improve the imaging quality of the developing box 100. In the width direction, the pushing portions 55 are farther away from the photosensitive drum 52 than the guide grooves 53. The drum cartridge 50 is also provided with a locking member 54 for preventing the developer cartridge 100 from falling off, the locking member 54 being located on one side of the drum frame 51 in the length direction and on the side of the drum frame 51 away from the photosensitive drum 52 in the width direction.

[0064] The drum box 50 also includes a separation cam 56 arranged on a side of the drum frame 51 away from the locking member 54 in the length direction; when the developing box 100 is installed to the drum box 50, the separation cam 56 can push the developing box 100 to move in a direction that moves the developing roller 120 in the developing box 100 away from the photosensitive drum 52 in the drum box 50.

[0065] like Figure 3-7As shown, the developer box 100 includes a housing 101, which is extended in the left-right direction, and has a driving side and a conductive side that are separately arranged in the left-right direction, and an opening side and a gripping side that are separately arranged in the front-back direction; in this embodiment, the left side of the housing 101 is the driving side, and the right side of the housing 101 is the conductive side; the front side is the opening side, and the rear side of the housing 101 is the gripping side. The housing 101 includes a powder bin 102 for accommodating developer and a left protective cover 103 that is detachably mounted on a side of the powder bin 102 close to the driving side, and the left protective cover 103 at least covers a part of the gear train arranged on the driving side of the powder bin 102 for protecting the gear train. The gear system includes but is not limited to an input gear 111, a developing roller gear, a powder feeding roller gear, a stirring frame gear and a plurality of connecting gears; the input gear 111 is used to connect with a driving member (not shown) inside the imaging device to receive the driving force of the imaging device and rotate around the input gear axis extending in the left-right direction; the input gear 111 is directly or indirectly connected with the developing roller gear, the powder feeding roller gear and the stirring frame gear, so that the input gear 111 transmits the driving force to the developing roller gear, the powder feeding roller gear and the stirring frame gear, and drives the developing roller gear, the powder feeding roller gear and the stirring frame gear to rotate around their respective axes extending in the left-right direction. The housing 100 is provided with a developing roller 120, a powder feeding roller and a stirring frame. The developing roller 120 is rotatably supported at an opening provided at the opening side of the housing 101. The opening is used to allow the developer inside the housing 101 to leave the housing 101. The developing roller 120 can rotate around a developing roller axis extending in the left-right direction. The developing roller gear is connected to the left end of the developing roller 120. The developing roller gear can drive the developing roller 120 to rotate. The powder feeding roller and the stirring frame are rotatably supported inside the housing 101. In the front-back direction, the powder feeding roller is closer to the developing roller 120 than the stirring frame. The powder roller contacts the developing roller 120 in the front-to-back direction; the powder feeding roller gear and the stirring rack gear are respectively connected to the left ends of the powder feeding roller and the stirring rack. The rotation of the powder feeding roller gear can drive the powder feeding roller to rotate around the powder feeding roller axis extending in the left-right direction, and the rotation of the stirring rack gear can drive the stirring rack to rotate around the stirring rack axis extending in the left-right direction; the rotation of the powder feeding roller and the stirring rack can stir the developer inside the housing 101 and transport the developer to the developing roller 120. The rotation of the developing roller 120 can transport the developer to the photosensitive drum 52 to develop the electrostatic latent image on the photosensitive drum 52. The developing box 100 also includes a powder discharge knife 108 disposed between the developing roller 120 and the housing 101. The powder discharge knife 108 is used to limit the thickness of the developer attached to the developing roller 120, so that the developer attached to the developing roller 120 is more uniform, thereby improving the imaging quality of the developing box 100.

[0066] like Figure 5As shown, a plurality of transfer gears are arranged between the developing roller gear and the input gear 111; the number of the transfer gears is set to an even number to ensure that the rotation direction of the developing roller gear is different from the rotation direction of the input gear 111, that is, the number of the transfer gears between the developing roller gear and the input gear 111 is 2n (n is a positive integer), and a first transfer gear and a second transfer gear are arranged between the developing roller gear and the input gear, the first transfer gear is meshedly connected with the input gear 111, the second transfer gear is meshedly connected with the developing roller gear, and the first transfer gear is meshedly connected with the second transfer gear; that is, the developing roller gear is connected to the input gear 111 through the second transfer gear and the first transfer gear, and receives the driving force of the input gear 111 to respectively drive the developing roller 120 to rotate. A third transmission gear is arranged between the stirring frame gear and the input gear 111. In the front-to-back direction, the rotation axis of the stirring frame is located between the rotation axis of the stirring frame gear and the rotation axis of the input gear 111. The stirring frame gear receives the driving force of the input gear 111 through the third transmission gear to drive the stirring frame to rotate and reduce the rotation speed of the stirring frame to stir the developer inside the powder bin 102, thereby improving the rotation stability of the stirring frame.

[0067] The developer cartridge 100 further includes a guided protrusion 105 and a forced pushing protrusion 106. The guided protrusion 105 can cooperate with the guide groove 53 of the drum cartridge 50 to guide the developer cartridge 100 to be installed in a suitable position in the drum cartridge 50; when the developer cartridge 100 is installed in the drum cartridge 50, the forced pushing protrusion 106 can receive the forced pushing force of the forced pushing portion 55 to make the developer roller 120 in close contact with the photosensitive drum 52, and the guided protrusion 105 and the forced pushing protrusion 106 are both formed by extending outward from both sides of the housing 101 in the left-right direction; when viewed in the left-right direction, the guided protrusion 105 overlaps at least a portion of the developer roller 120 in the left-right direction. In this embodiment, the guided protrusion 105 includes a first guided protrusion 105a arranged on the driving side of the shell 101 and a second guided protrusion 105b arranged on the conductive side of the shell 101, and the forced push protrusion 106 includes a first forced push protrusion 106a arranged on the driving side of the shell 101 and a second forced push protrusion 106b arranged on the conductive side of the shell 101. In this embodiment, the second forced protrusion 106b is used as an electrode. Specifically, at least a portion of the second forced protrusion 106b is made of conductive material. At least a portion of the second forced protrusion 106b is electrically connected to at least one of the developing roller 120, the powder feeding roller and the powder discharge knife 108. When the developing box 100 is installed on the drum box 50, the second forced protrusion 106b can contact with the power supply member (not shown) in the drum box 50 or the imaging device to receive the point power outside the developing box 100, and provide power to at least one of the developing roller 120, the powder feeding roller and the powder discharge knife 108, so as to make the transportation of the developer in the developing box 100 smoother. Optionally, in other possible implementations of the present invention, the first guided protrusion 105a can be integrally formed with the first forced protrusion 106a.

[0068] The driving side of the housing 101 is also provided with a chip 140 and a chip holder 104 for supporting the chip 140. The chip 140 includes a storage portion (not shown) and an electrical contact surface 141, the storage portion and the electrical contact surface 141 are electrically connected, the storage portion is used to record information such as the model of the developing cartridge 100, the electrical contact surface 141 can contact and form an electrical connection with the electrical contact inside the imaging device, so that the developing cartridge 100 and the imaging device establish a communication link, when the developing cartridge 100 is installed in the imaging device, the chip holder 104 enters the interior of the chip slot, at this time, the electrical contact surface 141 contacts with the electrical contact so that the imaging device and the developing cartridge 100 establish a communication connection, so as to read the information of the developing cartridge 100, when the developer in the developing cartridge 100 is about to be consumed, the imaging device can prompt the user to replace the new developing cartridge 100 through the operation panel or indicator light. In the front-to-back direction, the chip holder 104 is closer to the rear side of the housing 101 relative to the front side of the housing 101; the chip 140 is supported on the top of the chip holder 104 in the up-down direction, and the chip 140 includes an electrical contact surface 141 that can be electrically connected to the electrical contact point of the imaging device, and the electrical contact surface 141 faces upward in the up-down direction. In the front-to-back direction, the chip holder 104 is closer to the gripping side of the housing 101 away from the developing roller 120. The conductive side of the housing 101 is also provided with a locked portion 107, which is close to the gripping side of the housing 101 in the front-to-back direction, and the locked portion 107 can cooperate with the locking portion 54 of the drum cartridge 50 to prevent the developing cartridge 100 from falling off the drum cartridge 50.

[0069] In one implementation of this embodiment, the chip holder 104 can be movably arranged on the driving side of the housing 101 in the left-right direction, and the developing box 100 is also provided with a limiting bracket for the direction chip 140 and the chip holder 104 to fall off from the housing 101. In another implementation of this embodiment, as Figure 4 As shown, the chip frame 104 is formed by extending outward from the left side of the housing 101 . Specifically, the chip frame 104 is formed by extending outward from the left side of the left protective cover 103 .

[0070] In order to effectively control the contact and separation between the photosensitive drum 52 and the developing roller 120, the developing box 100 is provided with a separation member to move the developing roller 120 from the position in contact with the photosensitive drum 52 to the position at least partially separated from the photosensitive drum 52; in this embodiment, the developing box 100 is provided with a force-receiving protrusion for receiving external force only on one of the two sides in the left and right directions, and the force-receiving protrusion is used as a force point in the separation member, which can receive external force and drive the developing roller 120 away from the photosensitive drum 52 under the action of the external force, so as to separate the developing roller 120 from the photosensitive drum 52, and the above-mentioned external force can come from the pushing member (not shown) of the imaging device or the separation cam 56 of the drum box 50. The following is a specific description of an embodiment in which the force-receiving protrusion of the developing box 100 receives the pushing force of the separation cam 56 to separate the developing roller 120 from the photosensitive drum 52.

[0071] Specifically, the developing box 100 is provided with a force-bearing member 710 having a force-bearing protrusion 711, and the force-bearing protrusion 711 is used to receive external force to separate the developing roller 120 from the photosensitive drum 52; the force-bearing protrusion 711 is located on the left side of the developing box 100 in the left-right direction, and when the developing box 100 is installed to the drum box 50, the force-bearing protrusion 711 can contact the separation cam 56. The developing roller 120 includes a colloid part for carrying the developer, and in the left-right direction, the force-bearing protrusion 711 is separated from the colloid part, and the force-bearing protrusion 711 is farther from the right side of the housing 101 than the colloid part; in the front-back direction, the force-bearing protrusion 711 is closer to the developing roller 120 than the input gear 111.

[0072] like Figure 8 As shown, the force-bearing member 710 is configured as a slider that can move relative to the housing 101, and the force-bearing protrusion 711 is extended outward in the left-right direction. When the force-bearing protrusion 711 is subjected to the separation force of the separation cam 56, the force-bearing member 710 can make the developing roller 120 move from the first position (such as the first position) in contact with the photosensitive drum 52. Fig. 9 ) moves to a second position (as shown) where the developing roller 120 is separated from the photosensitive drum 52 Fig.10 shown).

[0073] The developing box 100 further includes a separation rod, which includes a first separation rod 720 and a second separation rod 730. The first separation rod 720 is located on a side of the developing box 100 close to the force receiving member 710 in the left-right direction, and the second separation rod 730 is located on a side of the developing box 100 far from the force receiving member 710 in the left-right direction. When the force receiving protrusion 711 receives the force from the separation cam 56, the first separation rod 720 and the second separation rod 730 can respectively contact the two sides of the drum frame 51 according to the movement of the force receiving member 710, and drive the development roller 120 to separate from the photosensitive drum 52; when the first separation rod 720 and the second separation rod 730 contact the two sides of the drum frame 51 at the same time, the mutual movement between the development roller 120 and the photosensitive drum 52 is more balanced.

[0074] Specifically, Figure 8 and Fig.11 As shown, the force-bearing member 710 also includes a forced pushing surface 712; the first separation rod 720 includes a receiving portion 721 that can receive external force and a first separation portion 722 that can contact the drum frame 51; the second separation rod 730 includes a second separation portion 731 that can contact the drum frame 51; further, a connecting rod 740 is provided between the first separation rod 720 and the second separation rod 730, and the connecting rod 740 connects the first separation rod 720 and the second separation rod 730, so that the second separation rod 730 can move synchronously with the first separation rod 720; specifically, as shown in FIG. Figure 7 As shown, the connecting rod 740 is connected to the housing 101 through a guide groove 117 provided on the housing 101 . The guide groove 117 extends in the front-to-back direction, and the connecting rod 740 moves in the front-to-back direction along the guide groove 117 .

[0075] Further, in the present embodiment, the first separation rod 720 and the second separation rod 730 are respectively located on the left and right sides of the developer box 100 in the left-right direction; specifically, the first separation rod 720 is located on the left side of the developer box 100, and the second separation rod 730 is located on the right side of the developer box 100. The first separation rod 720 and the second separation rod 730 are both connected to the housing 101 through the limiting members 118 provided on both sides of the developer box 100. The limiting members 118 are configured to sleeve the first separation rod 720 and the second separation rod 730. The limiting sleeve on the outer surface, the interior of the limiting member 118 includes a limiting hole 118a. Preferably, the limiting hole 118a is configured as a square hole that cooperates with the first separation rod 720 and the second separation rod 730 to limit the radial movement and rotation of the first separation rod 720 and the second separation rod 730 in their extension direction, so that the first separation rod 720 and the second separation rod 730 can only move along the extension direction of the first separation rod 720 and the second separation rod 730, and drive the developing roller 120 to separate from the photosensitive drum 52.

[0076] like Figure 9-10As shown, when the imaging device needs to control the development roller 120 and the photosensitive drum 52 to separate, the separation member (not shown) in the imaging device applies force to the separation cam 56, and the separation cam 56 applies force to the force-bearing protrusion 711 after being subjected to the force, so that the force-bearing member 710 moves from the first position (as shown in FIG. 1 ) relative to the housing 101 to the first position (as shown in FIG. 1 ). Fig. 9 as shown) moves to a second position (as shown) Fig.10 As shown in FIG. 1 , at this time, the second pushing surface 712 of the force-bearing member 710 applies force to the force-bearing protrusion 721 of the first separation rod 720, and at the same time, the first separation portion 722 of the first separation rod 720 is in contact with the drum frame 51, so that the first separation rod 720 drives the developing box 100 to move away from the photosensitive drum 52 along the width direction of the drum box 50, and the developing roller 120 moves away from the photosensitive drum 52 along with the developing box 100, so that the developing roller 120 and the photosensitive drum 52 are separated by a distance S, thereby realizing the separation of the developing roller 120 and the photosensitive drum 52. Further, as shown in FIG. Fig.11 As shown, a limiting member 118 is provided on the developing box 100 for preventing the force-bearing member 710, the first separation rod 720 and the second separation rod 730 from falling off the developing box 100. The limiting member 118 can also serve as a guide member for guiding the movement of the force-bearing member 710, the first separation rod 720 and the second separation rod 730. When the force-bearing member 710 is pushed by an external force and generates a thrust on the first separation rod 720, the first separation rod 720 moves relative to the shell 101 along the extension direction of the limiting member 118 under the guidance of the limiting member 118.

[0077] Similar to the first separation rod 720, when the first separation rod 720 moves from the first position to the second position, the second separation rod 730 connected to the first separation rod 740 through the connecting rod 740 moves synchronously with the first separation rod 720. At this time, the second separation portion 731 of the second separation rod 730 simultaneously abuts against the drum frame 51, so that the developing box 100 moves along the width direction of the drum box 50 in the direction away from the photosensitive drum 52, thereby realizing the separation of the developing roller 120 and the photosensitive drum 52. The first separation rod 720 and the second separation rod 730 simultaneously apply a separation force to the drum frame 51 on both sides in the length direction of the drum box 50, so that the separation of the developing roller 120 and the photosensitive drum 52 is more balanced.

[0078] When the imaging device needs to control a certain developing box 100 to participate in the imaging operation (when the color imaging device switches the color mode), the imaging device stops applying the separation force to the separation cam 56 in the drum box 50, that is, the separation force on the force-bearing member 710 in the developing box 100 is released. At this time, there is only the engagement force applied by the pushing portion 55 to the developing box 100 between the developing box 100 and the drum box 50. Under the action of the engagement force, the developing box 100 drives the developing roller 120 to move along the width direction of the drum box 50 toward the direction close to the photosensitive drum 52, so that the developing roller 120 contacts the photosensitive drum 52 again.

[0079] Compared with the prior art method of simultaneously providing separation structures on both sides of the drum box 50 and the developer box 100, the developer box 100 of the utility model is only provided with a force-bearing member 710 on one side for receiving the separation force, and the separation force is transmitted to the separation rods located on both sides of the developer box 100, so that the separation rods apply separation force to the drum frame 51 on the left and right sides of the developer box 100 at the same time, thereby realizing the separation of the developing roller 120 and the photosensitive drum 52, simplifying the structure of the developer box 100 and the drum box 50, which can effectively reduce the production cost of the developer box 100 and is conducive to achieving the requirement of miniaturization of the developer box 100.

[0080] Preferably, in an embodiment, the first separation rod 720, the second separation rod 730 and the connecting rod 740 can be arranged as a separation rod of an integrated structure; optionally, in a feasible manner of this embodiment, the separation rod can also be split into multiple independent structures, and when the force-bearing member 710 applies force to any component of the separation rod, the separation rod can move relative to the shell 101.

[0081] Optionally, a possible implementation method of this embodiment is as follows: Fig.12As shown, an elastic member 740a is provided between the separation lever and the housing 101. Specifically, the housing 101 includes two guide grooves 117 arranged in the housing 101 opposite to each other in the left-right direction, the separation lever includes a connecting rod 740 extending in the left-right direction, the connecting rod 740 is located inside the guide groove 117 and is slidably connected to the guide groove 117, two elastic members 740a are provided, the two elastic members 740a are correspondingly installed inside the two guide grooves 117, and the elastic member 740a is located on the side of the connecting rod 740 close to the developing roller 120 in the front-to-back direction, and the elastic member 740a is configured as a compression spring that applies a thrust in the front-to-back direction to the connecting rod 740 away from the developing roller 120. When the force-bearing member 710 is subjected to external force, the force-bearing member 710 applies a forward thrust in the front-to-back direction to the first separation rod 720 located on the left side of the separation rod. When the first separation rod 720 is forced to move forward, the first separation rod 720 drives the second separation rod 730 located on the right side of the separation rod to move together through two elastic members 740a, respectively applying thrust to both sides of the connecting rod 740, thereby preventing the separation rod from being unevenly stressed when being thrust by the force-bearing member 710, thereby making the separation rod move more smoothly. Preferably, the elastic member 740a is constructed as a compression spring, and the elastic force of the elastic member 740a is relatively small, and the elastic force of the elastic member 740a is much smaller than the forced thrust of the force-bearing member 710.

[0082] Embodiment 2:

[0083] Next, we will combine the Figure 13-15 Embodiment 2 of the present invention is described in detail. Embodiment 2 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above embodiment will not be repeated in this embodiment. The difference is that the separation component in this embodiment has a different setting from that in the above embodiment.

[0084] like Fig.13 As shown, in this embodiment, the developing cartridge 100 includes a force-bearing member 610 having a force-bearing protrusion 611, and a separating member that can separate the developing roller 120 from the photosensitive drum 52, the separating member includes a first separating member 620 and a second separating member 630, a connecting rod 640 is provided between the first separating member 620 and the second separating member 630, the connecting rod 640 connects the first separating member 620 and the second separating member 630, so that the second separating member 630 can move synchronously with the first separating member 620; and the first separating member 620 and the second separating member 630 can rotate relative to the housing 101 around the axis where the connecting rod 640 is located. The force-bearing member 610 also includes a forced pushing surface 612, the first separating member 620 includes a force-bearing surface 621 and a first separating protrusion 622, and the second separating member 630 includes a second separating protrusion 631.

[0085] like Figure 14-15As shown, in the state where the force-bearing protrusion 611 of the force-bearing member 610 receives the force of the separation protrusion 56 in the drum cartridge 50, the force-bearing member 610 moves from the first position (eg Fig.14 as shown) moves to a second position (as shown) Fig.15 At this time, the force-bearing surface 621 of the first separating member 620 is pushed by the forced pushing surface 612 of the force-bearing member 610, thereby moving around the axis of the connecting rod 640 from the position where the developing roller 120 contacts the photosensitive drum 52 (as shown in FIG. Fig.14 ) to a position where the developing roller 120 is separated from the photosensitive drum 52 (as shown in FIG. Fig.15 As shown in the figure, when the first separating member 620 moves from the first position to the second position, the first separating protrusion 622 of the first separating member 620 rotates in the direction M close to the photosensitive drum 52, and during the rotation, the first separating protrusion 622 abuts against the drum frame 51, driving the developing box 100 to move in the direction away from the photosensitive drum 52, and the developing roller 120 moves with the developing box 100 in the direction away from the photosensitive drum 52, so that the developing roller 120 and the photosensitive drum 52 are separated by a distance S, thereby realizing the separation of the developing roller 120 and the photosensitive drum 52.

[0086] The second separating member 630 connected to the connecting rod 640 moves with the first separating member 620. When the force-bearing protrusion 611 is subjected to force, similar to the first separating rod 620, the second separating protrusion 631 of the second separating member 630 abuts against the drum frame 51 on the right side in the length direction of the drum cartridge 50, driving the developing cartridge 100 to move in a direction away from the photosensitive drum 52, and the developing roller 120 moves in a direction away from the photosensitive drum 52 with the developing cartridge 100, thereby realizing the separation of the developing roller 120 from the photosensitive drum 52. The first separating member 620 and the second separating member 630 simultaneously apply a separation force to the drum frame 51 on both sides in the length direction of the drum cartridge 50, thereby making the separation of the developing roller 120 from the photosensitive drum 52 more balanced.

[0087] Compared with the prior art in which separation structures are simultaneously provided on both sides of the drum box 50 and the developer box 100, the developer box 100 of the utility model is provided with a force-bearing member 610 on one side for receiving the separation force, and the separation force is transmitted to the separation members located on both sides of the developer box 100, so that the separation members simultaneously apply separation force to the drum frame 51 on the left and right sides of the developer box 100, thereby completing the separation of the developing roller 120 and the photosensitive drum 52; this arrangement simplifies the structure of the developer box 100 and the drum box 50, can effectively reduce the production cost of the developer box 100, and is conducive to achieving the requirement of miniaturization of the developer box 100.

[0088] Embodiment 3:

[0089] Next, we will combine the Figure 16-22Embodiment 3 of the present invention will be described in detail. Embodiment 3 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above embodiments will not be repeated in this embodiment. The difference is that the separation component in this embodiment is different from that in the above embodiments.

[0090] like Fig.16 As shown, in this embodiment, the developing box 100 includes a force-bearing member 210 with a force-bearing protrusion 211 and a separating member, the separating member includes a first separating member 220 and a second separating member 230, a connecting rod 240 is arranged between the first separating member 220 and the second separating member 230, the connection 240 is used to transfer the separation force from the force-bearing member 210 to the second separating member 230, the connecting rod 240 includes a first connecting rod 241 and a second connecting rod 242; the first separating member 220 includes a first force-bearing portion 221 and a first resistance surface 222, the first separating member 230 includes a second force-bearing portion 231 and a second separating portion 232; the first force-bearing portion 221 and the second force-bearing portion 231 are both constructed as inclined surfaces.

[0091] The force-bearing member 210 further includes a first inclined surface 212 and a second inclined surface 213 configured as an inclined surface; when the force-bearing protrusion 211 of the force-bearing member 210 receives the force of the separation cam 56 of the drum cartridge 50, the force-bearing member 210 moves from the first position (eg Figure 17-18 ) to a second position (as shown) Figure 19-20 As shown in FIG. 2 , during this process, the first inclined surface 212 of the force-bearing member 210 applies force to the first force-bearing portion 221 of the first separating member 220, thereby pushing the first separating member 220 to move. During this process, the first contact surface 222 contacts the drum frame 51 to drive the developing roller 120 to separate from the photosensitive drum 52. At the same time, as shown in FIG. Figure 21-22As shown, the second inclined surface 213 of the force-bearing member 210 applies force to the first connection 241, and the inclined surface of the first connecting rod 241 moves in the left-right direction in the direction away from the force-bearing member 210 after the force is applied; the first connecting rod 241 and the second connecting rod 242 are connected by an inclined surface. When the first connecting rod 241 moves, the first connecting rod 241 applies a thrust to the second connecting rod 242. Both ends of the second connecting rod 242 are provided with inclined surfaces facing the front end of the shell 101. After the inclined surface of the second connecting rod 242 is subjected to force, the second connecting rod 242 moves in the left-right direction. Specifically, the second connecting rod 242 moves in the left-right direction toward the direction close to the second separating member 230. During the movement of the second separating member 230, the second connecting rod 242 contacts the second force-bearing portion 231 of the second separating member 230 and applies a force to the second force-bearing portion 231 of the second separating member 230 toward one end of the photosensitive drum 52 along the extension direction of the second separating member 230. After the second separating member 230 is moved by the force, the second separating portion 232 of the second separating member 230 abuts against the drum frame 51. At this time, the second separating member 230 drives the developing box 100 to move in the direction of moving the developing box 100 away from the photosensitive drum 52, and the developing roller 120 moves with the developing box 100 in the direction away from the photosensitive drum 52, thereby realizing the separation of the developing roller 120 from the photosensitive drum 52. The first separating member 220 and the second separating member 230 simultaneously apply a separation force to the drum frame 51 on both sides in the length direction of the drum box 50, so that the separation of the developing roller 120 from the photosensitive drum 52 is more balanced. Further, when the developing box 100 moves from the first position to the second position, the second separating member 230 moves relative to the developing box 100 along the direction of the groove.

[0092] Embodiment 4:

[0093] Next, we will combine the Figure 23-25 Embodiment 4 of the present invention is described in detail. Embodiment 4 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above embodiment will not be described in detail in this embodiment. The difference between this embodiment and the above embodiment is that the separation member provided on the developing box in this embodiment is different from the separation member of the developing box in the above embodiment. Specifically, Fig.23 The developer box 100 includes a lever 310 having a force-bearing protrusion 311, and the lever 310 is rotatably connected to one side of the housing 101. Preferably, the lever 310 is located on the left side of the developer box 100 in the left-right direction. The separation member also includes a first separation portion 321 and a second separation portion 325 and a connecting rod 327 for connecting the first separation portion 321 and the second separation portion 325. The lever 310 also includes a contact portion 312. The first separation portion 321 has a force-bearing portion 322 and a first separation protrusion 323, and the second separation portion 325 has a second separation protrusion 326.

[0094] like Figure 23-25 As shown, the lever 310 can receive the force provided by the separation cam 56 to move the first position where the developing roller 120 contacts the photosensitive drum 52 to the second position where at least a portion of the developing roller 120 is separated from the photosensitive drum 52 . When the lever 310 is rotated under force, the contact portion 312 of the lever 310 can apply a pushing force to the force-bearing portion 322 of the first separation portion 321, so that the first separation portion 321 and the second separation portion 325 rotate around the axis of the connecting rod 327. During the movement, the first separation protrusion 323 and the second separation protrusion 326 respectively abut against the drum frame 51 on both sides in the length direction of the drum box 50, so that the developing box 100 moves along the width direction of the drum box 50 in the direction away from the photosensitive drum 52, and the developing roller 120 moves with the developing box 100 in the direction away from the photosensitive drum 52. At this point, the developing roller 120 and the photosensitive drum 52 will be separated by a distance S, thereby realizing the separation of the developing roller 120 and the photosensitive drum 52; the first separation protrusion 323 and the second separation protrusion 326 simultaneously apply a separation force to the drum frame 51 on both sides in the length direction of the drum box 50, so that the mutual movement between the developing roller 120 and the photosensitive drum 52 is more balanced.

[0095] Embodiment 5:

[0096] Next, we will combine the Figure 26-30 Embodiment 5 of the present invention is described in detail. Embodiment 5 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above embodiment will not be described in detail. The difference between this embodiment and the above embodiment is that the separation member provided on the developing box in this embodiment is different from the separation member of the developing box in the above embodiment. The developing box 100 includes a force-bearing member 410 and a driving rod 420 for driving the developing roller 120 and the photosensitive drum 52 to separate. The force-bearing member 410 has a force-bearing protrusion 411. Fig.26As shown, the force-bearing member 410 is configured as a slider that can move relative to the housing 101; when the force-bearing member 410 receives the separation force of the separation cam 56, the developing roller 120 moves from the first position in contact with the photosensitive drum 52 to the second position at least partially separated from the photosensitive drum 52. The driving member 420 is configured as a rod extending along the length direction of the housing 101, and the driving member 420 has a force-bearing portion 421, a first driving portion 422, and a second driving portion 423; the first driving portion 422 is located on a side of the developing cartridge 100 close to the force-bearing member 410, and the second driving portion 423 is located on a side of the developing cartridge 100 away from the force-bearing member 410. Specifically, the force-bearing protrusion 411 extends from one side of the force-bearing member 410 in the left-right direction, and the force-bearing member 410 is located on one side of the developing box 100. Preferably, the force-bearing member 410 is located on the left side of the developing box 100, and the force-bearing member 410 includes a contact surface 412 configured to be inclined in the left-right direction; the bottom surfaces of the first driving part 422 and the second driving part 423 are configured as inclined surfaces facing the left side.

[0097] Specifically, Figure 27-30 As shown, in this embodiment, when the imaging device stops working or the imaging operation of the imaging device does not require the participation of a certain developing box 100 (when the color imaging device switches the color mode); the imaging device applies an external force to the force-bearing protrusion 411 of the force-bearing member 410 through the separation cam 56 of the drum box 50, and the force-bearing member 410 is forced from the first position (such as the front end of the developing box 100) to the front end of the developing box 100. Fig. 27 and 29 ) moves to a second position (as shown) further away from the front end of the developing cartridge 100 than the first position. Fig.28 and 33 In the process of the force-bearing member 410 moving from the first position to the second position, the contact surface 412 contacts the force-bearing portion 421, so that the driving rod 420 moves in the left and right directions, as shown in FIG. Figure 29-30 As shown, when the driving rod 420 moves, the inclined surfaces at the bottom of the first driving part 422 and the second driving part 423 respectively contact with the drum frame 51, thereby pushing the developing box 100 to move upward relative to the drum box 50, and the developing box 100 drives the developing roller 120 to separate from the photosensitive drum 52; and when the inclined surfaces at the bottom of the first driving part 422 and the second driving part 423 simultaneously apply thrust to the drum frame, the relative movement between the developing roller 120 and the photosensitive drum 52 is more balanced.

[0098] Embodiment 6:

[0099] Next, we will combine the Figure 31-33Embodiment 6 of the present invention is described in detail. Embodiment 6 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above-mentioned embodiment will not be repeated in this embodiment. The difference between this embodiment and the above-mentioned embodiment is that the separation member provided on the developing box in this embodiment is different from the separation member of the developing box in the above-mentioned embodiment. Specifically, in order to control the contact and separation between the developing roller 120 and the photosensitive drum 52, a force-bearing member 910 with a force-bearing protrusion 911 is provided on one side of the developing box 100 in the left and right directions. When the developing box 100 is installed to the imaging device, the force-bearing protrusion 911 can contact with the pushing member of the imaging device to receive the force of the imaging device and drive the developing roller 120 to move from a first position in contact with the photosensitive drum to a second position in which at least a portion of the developing roller is separated from the photosensitive drum 52.

[0100] Specifically, the force-bearing protrusion 911 is located on the right side of the developer box 100 in the left-right direction; in the front-to-back direction, the force-bearing protrusion 911 is closer to the rear side of the force-bearing protrusion 911 relative to the front side of the shell 101, and the second forced pushing protrusion 106b includes an electrical contact portion, which is exposed on the right side of the shell 101 in the left-to-right direction, and in the front-to-back direction, the force-bearing protrusion 911 is closer to the rear side of the shell than the electrical contact portion. Fig.31As shown, the developing box 100 includes a force-bearing member 910 and a separating member. The force-bearing member 910 can be formed as a whole or divided into multiple independent components. The force-bearing member 910 is used to apply external force to the separating member. In this embodiment, a connecting member 920 for transmitting driving force is provided between the force-bearing member 910 and the separating member. The force-bearing member 910 also has a force-applying surface 912. The connecting member 920 has a force-bearing surface 921 for receiving the driving force of the force-bearing member 910 and a pushing portion 922 for applying force to the separating member. The separating member includes a first separating rod 930 and a second separating rod 940 and a connecting rod 950 for connecting the first separating rod 930 and the second separating rod 940. The first separating rod 930, the second separating rod 940 and the connecting rod 950 are formed as a whole. The first separating member 930 is located on the side of the developing box 100 close to the force-bearing member 910, and the second separating member 940 is located on the side of the developing box 100 away from the force-bearing member 910; the first separating rod 930 has a driven portion 931 that receives the forced thrust and a first forced thrust protrusion 932 that abuts against the drum frame 51, and the second separating rod 940 has a second forced thrust protrusion 941 that abuts against the drum frame 51. When the force-bearing protrusion 911 of the force-bearing member 910 receives external force, the force-bearing member 910 can move relative to the shell 101 and at the same time transmit the driving force to the connecting member 920 through the contact between the force-applying surface 912 and the force-bearing surface 921. The connecting member 920 transmits the driving force to the first separating member 930 through the contact between the pushing portion 922 and the driven portion 931; in this way, the first separating member 930 and the second separating member 940 move in the front-to-back direction toward the direction close to the photosensitive drum 52 according to the movement of the force-bearing member 910. During the movement, the first pushing protrusion 932 and the second pushing protrusion 941 respectively abut against the two sides of the drum frame 51 to drive the developing roller 120 to move from the first position in contact with the photosensitive drum to the second position where at least a part of the developing roller is separated from the photosensitive drum 52. When the force-bearing member 910 is pushed by an external force and the first separating member 930 generates a thrust, the first separating rod 930 moves relative to the developing box 100 along the extending direction of the limiting member 118 under the guidance of the limiting member 118 .

[0101] When the first separation rod 930 and the second separation rod 940 abut against both sides of the drum frame at the same time, the mutual movement between the developing roller 120 and the photosensitive drum 52 is more balanced.

[0102] Functions and beneficial effects:

[0103] Compared with the prior art, the developer box of the utility model is provided with a force-bearing member including a force-bearing protrusion only on one side of the shell, and the force-bearing member can receive external force to drive the developing roller to separate from the photosensitive drum; the developing box can realize the separation of the developing roller and the photosensitive drum when only receiving the forced pushing force of the imaging device or the drum box, thereby improving the adaptability of the developing box and facilitating the rapid promotion and application of the developing box.

[0104] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A developing box, which can be detachably installed in a drum box having a photosensitive drum, the developing box comprising: A housing for containing a developer, the housing having a first side and a second side separately arranged in a first direction, and the housing having a third side and a fourth side separately arranged 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 disposed on the third side of the housing in the second direction; an input gear, for receiving a driving force, wherein the input gear is located on the first side of the housing in the first direction; a chip having an electrical contact surface, the electrical contact surface being located on the first side of the housing in the first direction; It is characterized by further comprising: A first protrusion is located at one side of the housing in the first direction, and the first protrusion can receive a force from the outside of the developing box and move relative to the housing; a second protrusion, located at a side of the housing close to the first protrusion in the first direction, and the second protrusion can move according to the movement of the first protrusion; a third protrusion, located at the other side of the housing away from the first protrusion in the first direction, and the third protrusion can move according to the movement of the first protrusion; When the second protrusion and the third protrusion move, the developing roller moves from a first position in contact with the photosensitive drum to a second position separated from at least a portion of the photosensitive drum according to the movement of the first protrusion.

2. The developing cartridge according to claim 1, characterized in that: A rod is also included, the rod extending from the first side of the housing to the second side of the housing, and the rod is used to transmit the driving force of the first protrusion to the third protrusion.

3. The developing cartridge according to claim 2, characterized in that: The rod is movable in the first direction relative to the housing as the first protrusion moves.

4. The developing cartridge according to claim 2, wherein: The rod is integrally formed with the second protrusion and the third protrusion.

5. The developing cartridge according to claim 1, wherein: The first protrusion is located on the first side of the housing in the first direction.

6. The developing cartridge according to claim 5, characterized in that: The developing roller includes a gel portion, the first protrusion is disposed spaced apart from the gel portion in the first direction, and the first protrusion is farther from the second side of the housing than the gel portion.

7. The developing cartridge according to claim 5, characterized in that: In the second direction, the first protrusion is closer to the developing roller than the input gear.

8. The developing cartridge according to claim 1, wherein: In the first direction, the first protrusion protrudes from the second side of the housing.

9. The developing cartridge according to claim 8, characterized in that: In the second direction, the first protrusion is closer to the fourth side of the housing than to the third side of the housing.

10. The developing cartridge according to claim 9, characterized in that: Also included is an electrode having an electrical contact portion, the electrical contact portion being exposed at the second side of the housing in the first direction, and the first protrusion being closer to the fourth side of the housing than the electrical contact portion in the second direction.

Images