A developing box

Abstract

The utility model discloses a developing box, comprising a box body, a developing roller, a driving part and an identification component, wherein the box body can store a developer, the developing roller is mounted on the box body and can rotate around an axis extending in a first direction, the driving part is arranged at the first end of the box body to receive a driving force from an image forming device, the identification component comprises a supporting part fixed to the box body, a storage medium and an electrical contact surface, the storage medium stores information of the developing box, the electrical contact surface can contact and be electrically connected with an electrical contact pin in the image forming device, wherein when the developing box is mounted on the image forming device, the storage medium can move relative to the supporting part. The developing box of the utility model reduces the number of components of the developing box, and the electrical contact surface structure is relatively simple, easy to install and easy to contact with the electrical contact pin.

Description

Technical Field

[0001] The utility model relates to the field of image forming devices, in particular to a developing box. Background Art

[0002] An image forming apparatus is generally provided with an electric contact pin for reading information stored in a chip (storage medium) to identify information of a developing cartridge.

[0003] However, in the prior art, the chip is usually configured to be movable relative to the powder box or completely fixed on the powder box. The chip that is movable relative to the powder box will lead to an increase in parts costs, and the chip that is completely fixed on the powder box will interfere with the structure inside the printer when assembled into some models of printers and cannot be installed smoothly.

[0004] Therefore, a technical solution to the above problems is needed. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a developing box to solve the above-mentioned technical problems.

[0006] In order to achieve the purpose, the utility model adopts the following technical solutions:

[0007] A developing box, which can be detachably combined with a drum assembly and installed together in an image forming device, wherein the image forming device includes an electric contact pin, and the developing box includes:

[0008] a box body in which a developer can be stored, the box body having a first end and a second end opposite to each other in a first direction, and a fifth end and a sixth end in a third direction;

[0009] a developing roller rotatable about an axis extending in a first direction;

[0010] a driving unit, disposed at the first end of the box body, for receiving a driving force from the image forming device; and

[0011] an identification component, comprising a support portion fixed to the first end of the box body, a storage medium and an electrical contact surface, wherein the storage medium stores information of the developing box, and the electrical contact surface can contact and be electrically connected with an electrical contact pin in an image forming device, so that the image forming device reads the information stored in the storage medium;

[0012] Wherein, when the developing box is installed in the image forming device, the storage medium can move relative to the supporting portion.

[0013] Preferably, an elastic member is further provided between the storage medium and the supporting portion, and when the developing box is installed on the image forming device, the storage medium interferes with the first limiting portion on the image forming device so that the storage medium moves downward along a third direction relative to the supporting portion, thereby compressing the elastic member; when the storage medium is facing the electric contact pin in the third direction, the storage medium moves upward along the third direction relative to the supporting portion under the action of the elastic member, thereby causing the electrical contact surface to contact the electric contact pin.

[0014] Preferably, a guide rail is provided on the support portion, and a sliding protrusion is provided on the storage medium. When the storage medium is installed on the support portion, the storage medium can be displaced relative to the support portion along the guide rail on the support portion through the cooperation between the sliding protrusion and the guide rail.

[0015] Preferably, when the developing box is installed in the image forming device, the storage medium abuts against the first inclined surface on the first wall, so that the storage medium is displaced in the third direction along the guide rail relative to the supporting portion.

[0016] Preferably, a limiting protrusion for limiting the movement of the storage medium is provided on one side of the guide rail in the third direction close to the fifth end.

[0017] Preferably, a moving part is further provided on the developing box, and when the developing box is installed on the image forming device, the moving part can be forced to push the storage medium to generate displacement relative to the supporting part.

[0018] Preferably, the support portion is provided with a retaining portion on one side close to the fifth end in the third direction, and when the storage medium moves along the guide rail to contact and cooperate with the electric contact pin, the sliding protrusion can cooperate with the retaining portion to fix the storage medium.

[0019] Preferably, when the developing box is installed on the image forming device, the movable member rotates relative to the supporting portion under the action of the first limiting portion on the image forming device and then acts on the storage medium, so that the storage medium moves relative to the supporting portion.

[0020] Preferably, when the developing box is installed on the image forming device, the movable member moves up and down in a third direction relative to the developing box under the action of the first guide portion on the image forming device and then acts on the storage medium, so that the storage medium moves relative to the supporting portion.

[0021] Preferably, the support portion is provided with an extrusion piece which can elastically move on the support portion to extrude the storage medium, and the storage medium can be fixed relative to the support portion by the extrusion of the extrusion piece, so that the electric contact pin is maintained in the abutting position or the non-abutting position.

[0022] Preferably, an elastic member for resetting the moving member is further provided between the moving member and the supporting portion.

[0023] Preferably, the moving member is arranged on the first protective cover on the box body; or the moving member is arranged on the supporting part.

[0024] Preferably, the movable member is further provided with a convex portion, and the supporting portion is further provided with an arc track for limiting the movement of the convex portion. When the developing box is installed on the image forming device, the movable member moves along the arc track under the action of the first guide portion on the image forming device.

[0025] Preferably, the storage medium can be rotatably mounted on the support portion, and the image forming device is provided with a first interference surface. When the developing box is installed on the image forming device, the first interference surface acts on the storage medium to push the storage medium to rotate so that the electrical contact surface abuts against the electrical contact pin.

[0026] Preferably, a first guiding slope is provided at the front end of the storage medium, and when the developing box is installed in the image forming device, the first interference surface abuts against the first guiding slope, so that the storage medium rotates relative to the supporting portion.

[0027] The developer box in the utility model reduces the number of parts of the developer box by setting the electrical contact surface of the developer box to be movable relative to the box body, eliminating the need to set a component that enables the chip rack to move relative to the box body, and the dynamic structure of the electrical contact surface is relatively simple, easy to install, and the point contact surface is easy to contact with the electrical contact terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the first end of the developing box and the drum assembly in the first embodiment of the present utility model in the assembled state;

[0030] Figure 2It is a schematic diagram of the three-dimensional structure of the second end of the developing box and the drum assembly in the first embodiment of the utility model when they are assembled;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the drum assembly in the first embodiment of the present utility model;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the first end of the developing box in the first embodiment of the utility model;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the second end of the developing box in the first embodiment of the utility model;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of the first end driving assembly of the developing box in the first embodiment of the utility model;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the driving assembly of the first end of the developing box in a modified example of the first embodiment of the utility model;

[0036] Figure 8 It is a structural schematic diagram of the state in which the electric contact surface is in contact with the electric contact pin when the developing box in the first embodiment of the utility model is installed in place;

[0037] Fig. 9 It is a structural schematic diagram of the first embodiment of the utility model when the developing box is not installed in place and the electrical contact surface is in a state where the electrical contact pin is not in contact;

[0038] Fig.10 It is a structural schematic diagram of the second end of the box body when the developing box in the first embodiment of the utility model is installed in place and the electrical contact surface is in contact with the electrical contact pin;

[0039] Fig.11 This is a three-dimensional diagram of the identification component on the first protective cover in the second embodiment of the utility model;

[0040] Fig.12 This is a schematic diagram of the exploded structure of the identification component on the first protective cover in the second embodiment of the utility model;

[0041] Fig.13 It is a cross-sectional view of the identification component on the first protective cover in the second embodiment of the utility model;

[0042] Fig.14 for Fig.13 A schematic diagram of the local enlarged structure at point A in the middle;

[0043] Fig.15 It is a cross-sectional view of the identification component when the developing cartridge in the second embodiment of the present utility model is installed in the image forming device;

[0044] Fig.16This is a schematic diagram of the three-dimensional structure of the identification component installed on the first protective cover in the third embodiment of the utility model;

[0045] Fig.17 This is a schematic diagram of the exploded structure of the identification component on the first protective cover in the third embodiment of the utility model;

[0046] Fig.18 It is a three-dimensional structural schematic diagram of the identification component when the developing cartridge in the third embodiment of the utility model is installed in the image forming device;

[0047] Fig.19 This is a schematic diagram of the three-dimensional structure of the identification component installed on the first protective cover in the fourth embodiment of the utility model;

[0048] Fig. 20 This is a schematic diagram of the structure of the support portion of the identification component in the fourth embodiment of the utility model;

[0049] Fig.21 for Fig. 20 A schematic diagram of the local enlarged structure at B in the middle;

[0050] Fig. 22 It is a three-dimensional diagram of the storage medium and the moving part in the fourth embodiment of the utility model;

[0051] Fig.23 It is a partial structural schematic diagram of the installation of the moving part on the supporting part in the fourth embodiment of the utility model;

[0052] Fig.24 It is a three-dimensional structural schematic diagram of the identification component when the developing cartridge in the fourth embodiment of the utility model is installed in the image forming device;

[0053] Fig.25 It is a cross-sectional view of the identification component when the developing cartridge in the fourth embodiment of the utility model is installed in the image forming device;

[0054] Fig.26 It is a three-dimensional diagram of the identification component on the developer box in the fifth embodiment of the utility model;

[0055] Fig. 27 This is a schematic diagram of the exploded structure of the identification component on the developer box in the fifth embodiment of the utility model;

[0056] Fig.28 It is a partial cross-sectional structural schematic diagram of the supporting portion on the developing box in the fifth embodiment of the utility model;

[0057] Fig.29 This is a top view of the identification component in Embodiment 5 of the utility model after the storage medium is hidden;

[0058] Fig.30It is a three-dimensional structural schematic diagram of the identification component after the developing cartridge in the fifth embodiment of the present utility model is installed in the image forming device;

[0059] Fig.31 It is a partial structural schematic diagram of the identification component on the developer box in the sixth embodiment of the utility model;

[0060] Fig.32 It is a structural schematic diagram of a sixth embodiment of the present utility model in which the developing cartridge is installed in the installation cavity of the image forming device and is installed in place;

[0061] Fig.33 This is a schematic diagram of the structure of the identification component on the first protective cover in the seventh embodiment of the utility model;

[0062] Fig.34 This is a structural schematic diagram of a seventh embodiment of the present utility model in which the developing cartridge is installed in the installation cavity of the image forming device and is installed in place;

[0063] Fig.35 for Fig.34 A schematic diagram of the local enlarged structure at C in the middle;

[0064] Fig.36 It is a three-dimensional structural schematic diagram of the developing box in the eighth embodiment of the present utility model;

[0065] Fig.37 This is a schematic diagram of the structure of the identification component in the eighth embodiment of the utility model being decomposed on the developing box;

[0066] Fig.38 This is a schematic diagram of the three-dimensional structure of the first end of the developing box in the ninth embodiment of the present utility model;

[0067] Fig.39 It is a three-dimensional structural schematic diagram of the developing box in the tenth embodiment of the utility model;

[0068] Fig.40 This is a schematic diagram of the structure of the identification component in the tenth embodiment of the utility model being decomposed on the developing box;

[0069] Fig.41 This is a schematic diagram of the three-dimensional structure of the support member in the tenth embodiment of the present utility model;

[0070] Fig.42 This is a schematic diagram of the three-dimensional structure of the first end of the developing box in the tenth embodiment of the utility model; DETAILED DESCRIPTION

[0071] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0072] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] In this specification, in order to better describe the corresponding structure, the length direction (left-right direction) of the developing box in the accompanying drawings is defined as the first direction, the width direction (front-back direction) of the developing box is defined as the second direction, and the height direction (up and down direction) of the developing box is defined as the third direction.

[0077] Embodiment 1

[0078] refer to Figures 1 to 10 As shown, a developing box can be detachably installed in a drum assembly 5, and can be detachably installed in an image forming device together with the drum assembly 5.

[0079] like Figure 3 As shown, the drum assembly 5 includes a frame and a photosensitive drum (not shown in the figure), the frame includes a first plate 51 and a second plate 52 arranged opposite to each other in a first direction, a third plate 53 is integrally formed between the first plate 51 and the second plate 52, the third plate 53 extends along the first direction, and the first plate 51, the second plate 52, and the third plate 53 are configured to form a mounting groove 531 for accommodating a developing cartridge. The first plate 51 and the second plate 52 rotatably support the left and right ends of the photosensitive drum, respectively, and the rotation axis of the photosensitive drum is parallel to the first direction. The mounting groove 531 is located at the rear side of the photosensitive drum in the second direction, and the first plate 51 and the second plate 52 are respectively provided with a first guide rail 511 and a second guide rail 521, and the developing cartridge is detachably mounted on the mounting groove 531 to form a processing cartridge with the drum assembly 5.

[0080] The drum assembly 5 is also provided with a pushing member (not shown in the figure), which includes an elastic part and a force-applying part. The elastic part can be compressed to produce elastic deformation, and then the force-applying part is pushed to apply a pushing force to the developing box under the action of the elastic force. The direction of the pushing force is parallel to the second direction, so that the developing roller 131 on the developing box can fit tightly with the photosensitive drum. The pushing member includes a first pushing member 512 and a second pushing member 522. The first pushing member 512 is arranged on the right side of the drum assembly 5 in the first direction, corresponding to the first pushing protrusion 112 (mentioned below), and the second pushing member 522 is arranged on the left side of the drum assembly in the first direction, corresponding to the second pushing protrusion 121 (mentioned below). This arrangement enables the pushing force to be transmitted to the developing box in the second direction.

[0081] The developing box includes a box body 1, a developing assembly, a transmission assembly, a power supply assembly and a first protective cover 111.

[0082] like Figure 4 , Figure 5As shown, the box body 10 has a receiving cavity for receiving the developer, the box body 10 has a first end 11 and a second end 12 arranged oppositely in the first direction, the box body 10 has a third end 13 and a fourth end 14 arranged oppositely in the second direction, and the box body 10 has a fifth end 15 and a sixth end 16 arranged oppositely in the third direction. The box body 10 is provided with a powder outlet, which is located at the third end 13, and the box body 10 is provided with a handle 141, which is located at the fourth end 14.

[0083] The developing assembly includes a developing roller 131, a powder feeding roller and a stirring frame. The developing roller 131, the powder feeding roller and the stirring frame can be rotatably installed in the accommodating chamber between the first end 11 and the second end 12 of the box body 10. The rotation axes of the developing roller 131, the powder feeding roller and the stirring frame extend along the first direction, that is, parallel to the first direction. The developing roller 131 is arranged at the powder outlet, and is used to develop and form a developer image of a corresponding color on the surface of the photosensitive drum of the drum assembly 5. The powder feeding roller is arranged adjacent to the developing roller 131, so that the circumferential surface of the powder feeding roller abuts against the circumferential surface of the developing roller. The powder feeding roller can feed powder (developer) to the developing roller. The powder feeding roller is closer to the fourth end 14 of the box body 10 than the developing roller 131. The stirring frame is used to stir the developer in the accommodating chamber to make the developer rub and prevent the developer from agglomerating.

[0084] A forced pushing assembly is also provided on the box body 10, and the forced pushing assembly includes a first forced pushing protrusion 112 arranged on the first end 11 of the box body 10 and a second forced pushing protrusion 121 arranged on the second end 12 of the box body 10. The projection of the first forced pushing protrusion 112 in the first direction and the projection of the second forced pushing protrusion 121 in the first direction at least partially overlap. The first forced pushing protrusion 112 and the second forced pushing protrusion 121 respectively abut against the first forced pushing member 512 and the second forced pushing member 522 on the drum assembly 5 and receive the forward forced pushing force along the second direction provided by the first forced pushing member 512 and the second forced pushing member 522, so that the developing box drives the developing roller 131 to be pressed toward the direction close to the photosensitive drum under the action of the forced pushing force, thereby ensuring the close abutment between the developing roller 131 and the photosensitive drum.

[0085] The transmission assembly includes a driving part rotatably mounted on the first end 11 of the box body 10, the rotation axis of the driving part is parallel to the first direction, the driving part is rotatably mounted on the first end 11 of the box body 10, the driving part includes a coaxially integrally formed driving gear 21 and a power receiving part 20, the driving gear 21 is closer to the box body 10 than the power receiving part 20 in the first direction, and the power receiving part 20 is used to connect to the power output shaft on the image forming device to receive the power output of the image forming device.

[0086] like Figure 6As shown, the transmission assembly also includes a developing gear 22, a powder feeding gear 23, a stirring gear 25 and an idler 24, the developing gear 22 is coaxially fixedly mounted on one end of the developing roller 131 close to the first end 11 of the box body 10, the powder feeding gear 23 is coaxially fixedly mounted on one end of the powder feeding roller close to the first end 11 of the box body 10, the stirring gear 25 is coaxially fixedly mounted on one end of the stirring frame close to the first end 11 of the box body 10, and the idler 24 is rotatably mounted on the first end 11 of the box body 10, and the rotation axis of the idler 24 is parallel to the first direction. The developing gear 22, the powder feeding gear 23 and the idler 24 are all meshed with the driving gear 21, and the stirring gear 25 is meshed with the idler 24, so that the driving part transmits power to the developing roller 131, the powder feeding roller and the stirring frame. The meshing referred to in this embodiment can be direct meshing or indirect meshing. In addition, the gear transmission can also be replaced by belt transmission, gear train transmission with a high friction coefficient surface, sprocket chain transmission, etc. Or other transmission methods of meshing form are used for transmission. Or adopt other gear arrangement order / meshing order and change the number of idler gears, etc.

[0087] In the present application, since the developing gear 22, the powder feeding gear 23, and the stirring gear 24 are all meshed with the driving gear 21, and only one idle gear 24 is provided to drive the stirring gear 25, the number of gears is reduced, thereby reducing the space occupied in the first direction, which is conducive to the miniaturization of the developing box.

[0088] In the present application, the distance between the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction is a first distance H2, and the distance between the rotation axis of the driving part and the first pushing protrusion 112 in the second direction is a second distance H1. In the present embodiment, the first distance H1 is smaller than the second distance H2, that is, the first pushing protrusion 112 is located between the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction.

[0089] like Figure 7As shown, in another variation of the present embodiment, by adjusting the positions of the gears of the driving assembly on the first end 11, the distance between the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction is a third distance H3, and the third distance H3 is less than or equal to the first distance H1, that is, in this variation, the first forced push protrusion 112 is no longer located between the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction, and when the third distance H3 is equal to the first distance H1, the first forced push protrusion 112 is located below the rotation axis of the stirring gear 25 in the third direction, that is, the first forced push protrusion 112 is located at the end point of the line connecting the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction. When the third distance H3 is smaller than the first distance H1, the first forced push protrusion 112 is located behind the rotation axis of the stirring gear 25 in the second direction, that is, the first forced push protrusion 112 is located outside the rotation axis of the driving part and the rotation axis of the stirring gear 25 in the second direction. Such a configuration can reduce the corresponding gear size and further reduce the space of the first end 11 occupied by the driving assembly, thereby making the developing box more miniaturized and reducing the manufacturing cost of the developing box.

[0090] Preferably, in this modification, the third distance H3 between the rotation axis of the driving portion and the rotation axis of the stirring gear 25 is 31 mm.

[0091] like Figure 5 As shown, the power supply assembly includes a conductive member 3, which is mounted on the second end 12 of the box body 10, and has an electric receiving surface 32. The conductive member 3 also has a first electric contact portion and a second electric contact portion. The first electric contact portion is electrically connected to an end of the developing roller 131 close to the second end 12 of the box body 10, and the second electric contact portion is electrically connected to an end of the powder feeding roller close to the second end 12 of the box body 10. The electric receiving surface 32 is used to contact the power supply portion on the image forming device to receive the electric energy output by the image forming device, and guide the electric energy to the developing roller 131 and the powder feeding roller. Preferably, the electric receiving surface 32 is located between the rotation axis of the stirring frame and the developing roller 131 in the second direction.

[0092] like Figure 4 As shown, the first protective cover 111 is detachably fixedly mounted on the first end 11 of the box body 10 by screws and covers at least part of the transmission assembly in the first direction to protect the transmission assembly. In this embodiment, the first protective cover 111 covers the stirring gear 25, the developing gear 22, the driving gear and the idler gear 24. Alternatively, in some other embodiments, the first protective cover 111 can also be fixed to the first end 11 of the box body 10 by snapping.

[0093] The developing box is provided with a first positioning portion 1112 and a second positioning portion 31, the first positioning portion 1112 is located at the first end of the box body 10, the second positioning portion 31 is located at the second end of the box body 10, and the projections of the first positioning portion 1112 and the second positioning portion 31 in the first direction overlap with the projection of the developing roller 131 in the first direction. In this embodiment, the first positioning portion 1112 is integrally formed on the first protective cover 111, and the second positioning portion 31 is integrally formed on the conductive member 3.

[0094] During the process of installing the developing box in the drum assembly 5, the first positioning portion 1112 can be inserted into the first guide rail 511, and the second positioning portion 31 can be inserted into the second guide rail 521. The first guide rail 511 and the first positioning portion 1112 cooperate with each other, and the second guide rail 521 and the second positioning portion 31 cooperate with each other, so that the developing box can be installed in the drum assembly 5 more conveniently, thereby limiting the movement of the developing box in the up and down directions and the forward direction.

[0095] The developer box also includes an identification component, which includes a storage medium 42, an electrical contact surface 43, a support portion 41 and a first interference portion 1111. The support portion 41 is formed by a rightward protrusion integrally formed on the right end surface of the first protective cover 111. A mounting recess is integrally formed on the support portion 41, and the mounting recess is formed by being recessed from top to bottom. The storage medium 42 is used to contact the image forming device and can read data and write data. The storage medium 42 is fixedly installed in the mounting recess by gluing, snapping, etc. The electrical contact surface 43 is fixedly arranged on the upper surface of the storage medium 42, and the electrical contact surface is made of conductive metal. The storage medium 42 can transmit the developer box information to the image forming device through the electrical contact surface, and when the developer box is installed in the image forming device, the first direction is parallel to the electrical contact surface 43, and the third direction intersects with the electrical contact surface 43.

[0096] The first interference portion 1111 is integrally formed on the first protective cover 111, and the first interference portion 1111 protrudes rightward from the right end surface of the first protective cover 111. The first interference portion 1111 is located at the lower side of the electrical contact surface 43 in the third direction, and the first interference portion 1111 is located at the lower side of the support portion 41 in the third direction. The projection of the first interference portion 1111 in the first direction overlaps with the projection of the stirring gear in the first direction.

[0097] The image forming device includes an installation cavity for installing a processing box, and the installation cavity includes a first wall 61 and a second wall 62. The first wall 61 and the second wall 62 are spaced apart in a first direction, and the processing box is installed in the installation cavity from back to front along the first direction. When the processing box is installed in the installation cavity, the first wall 61 is opposite to the first plate 51 of the drum assembly 5 and the first end 11 of the developer box body 10, and the second wall 62 is opposite to the second plate 52 of the drum assembly 5 and the second end 11 of the developer box body 10.

[0098] The first wall 61 and the second wall 62 are respectively provided with a first guide track and a second guide track for guiding the process cartridge to be correctly installed in the installation cavity. The first guide track includes a first guide surface 611 and a second guide surface 614. The first guide surface 611 is located above the second guide surface 614. A first spacing space 615 is provided between the first guide surface 611 and the second guide surface 614. When the process cartridge is installed in the installation cavity, the support portion 41, the electrical contact surface 43 and the storage medium 42 are located in the first spacing space 615. The first guide surface 611 is provided with an identification recess 612 formed by being recessed upward from the first guide surface 611. An electrical contact pin 613 is provided in the identification recess 612. The electrical contact pin 613 is used to abut against and electrically connect with the electrical contact surface 43 on the developing cartridge. By arranging the electric contact pin 613 in the identification recess 612, when the developing cartridge is installed in the image forming device, the support portion 41 and the electric contact surface 43 are located in the identification recess 612 and contact the electric contact pin 613, and the side walls of the identification recess 612 in the front and rear directions can limit the support portion 41 and the electric contact surface 43, thereby preventing the electric contact surface 43 from shaking during the contact with the electric contact pin 613 and causing poor contact and affecting signal transmission. The electric contact pin 613 can be elastically retracted in the up and down directions.

[0099] A first guiding portion 616 is disposed on the second guiding surface 614 . The first guiding portion 616 protrudes upward and has a first inclined surface 617 . The rear end of the first inclined surface 617 is lower than the front end.

[0100] The specific structure and working mode of the drum assembly 5 and the image forming device are prior art, and the cooperation between the drum assembly 5 and the image forming device is prior art, which will not be repeated here. In this application, only the structure and working process of the developing box are disclosed.

[0101] Next, the process of contact between the identification assembly and the image forming apparatus when the developing cartridge is installed in the drum assembly and the processing cartridge formed by the drum assembly 5 is installed in the image forming apparatus will be described.

[0102] like Figure 8 - Fig.10As shown, in the process of the developer box and the drum assembly 5 forming a processing box and being installed in the installation cavity in the image forming device along the installation direction, the first interference portion 1111 on the developer box moves forward with the developer box in the first spacing space 615, and the first interference portion 1111 contacts the first inclined surface 617 during the forward movement, so that the first interference portion 1111 is supported by the first inclined surface 617, so that the first interference portion 1111 drives the developer box to move upward, and because the developer box is restricted by the first guide rail 511 and the second guide rail 521 in the up and down directions, the first interference portion 1111 drives the developer box to swing upward with the first positioning portion 1112 and the second positioning portion 31 as the axis, so that the support portion 41 swings upward together with the developer box, so that the support portion 41 drives the electrical contact surface 43 to enter the identification recess 612 to contact and electrically connect with the electrical contact pin 613. The supporting portion 41 of the developing box is integrally formed on the first protective cover 111, and the first interference portion 1111 is also integrally formed on the first protective cover 111. Compared with the developing box in which the supporting portion 41 can move relative to the box body 10, the developing box structure can be simplified, the number of parts can be reduced, thereby reducing the number of molds, simplifying the assembly difficulty, and reducing costs.

[0103] The developing box and the drum assembly 5 constitute a processing box which continues to be installed in the installation cavity in the image forming device. The first interference portion 1111 moves to the front end of the first inclined surface 617 and then reaches the top of the first guide portion 616. The top of the first guide portion 616 is a horizontal plane, so that the first interference portion 1111 stays on the top of the first guide portion 616 to prevent the first interference portion 1111 from moving again, thereby ensuring the stable contact between the electric contact surface 43 and the electric contact pin 613. At the same time, since the electric contact pin 613 is retractable, the electric contact surface 43 can compress the electric contact pin 613 during the movement of the first interference portion 1111 along the first inclined surface 617, thereby maintaining abutment and electrical connection with the electric contact pin 613.

[0104] Furthermore, the second end 12 of the box body 10 of the developer box may be provided with a second interference portion 122, which is integrally formed at the second end 12 of the box body 10 and protrudes rightward from the second end. A third guide surface 621 and a fourth guide surface 622 are provided on the second wall 62 of the image forming device, the third guide surface 621 is located above the fourth guide surface 622 and has a spacing therebetween, a second spacing space 625 is provided between the third guide surface 621 and the fourth guide surface 622, a second guide portion 623 is provided on the fourth guide surface 622, a second inclined surface 624 is provided on the second guide portion 623, a rear end of the second inclined surface 624 is lower than the front end, when the first interference portion 1111 moves along the first inclined surface 617, the second interference portion 122 moves along the second inclined surface 624, so that when the processing box composed of the developing box and the drum assembly 5 is installed in the image forming device, both ends of the box body 10 are subjected to an upward supporting force, so that the forces at both ends of the box body 10 are balanced, thereby avoiding the box body 10 from swinging during movement.

[0105] Therefore, the electrical contact surface of the identification component of the structure of the above embodiment is always electrically connected to the image forming device, which can ensure the stability of the electrical connection between the chip 131 of the developing box and the image forming device.

[0106] Embodiment 2

[0107] like Fig.11 - Fig.15 As shown, another developing box is provided in this embodiment case, and the difference between this embodiment case and embodiment case one is that: in this embodiment case, the structure of the identification component is different from that in embodiment one, and the storage medium 42a and the electrical contact surface 43a in the identification component can move relative to the support portion 41a.

[0108] like Fig.12 , Fig.13 and Fig.15 As shown, in this embodiment, the identification component also includes a moving part, a first elastic part 443a, an extruding part 412a and a second elastic part 413a, the first interference part 1111 and the second interference part 122 are cancelled on the box body 10, and the image forming device is also provided with a first recess 615a on the second guide surface 614a, and the first recess 615a is located on the front side of the first guide part 616a in the installation direction of the developing box (i.e., the second direction).

[0109] In the process of installing the processing box composed of the developing box and the drum assembly 5 in the image forming device, the image forming device can act on the moving part, so that the moving part pushes the storage medium 42a to move relative to the supporting part 41a, and the electric contact surface 43a is abutted against the electric contact pin 613. Specifically, in this embodiment, the moving part includes a rod 442a and a sliding part 441a, the rod 442a is cylindrical, and a sliding hole 414a for the rod 442a to extend from the outside of the mounting recess 411a into the mounting recess 411a along the third direction is provided on the bottom surface of the mounting recess 411a in the supporting part 41a, and the sliding hole 414a is a through hole, and the rod 442a can be installed in the sliding hole 414a in a sliding direction relative to the sliding hole 414a. The sliding part 441a is integrally formed at the lower end of the rod 442a, and the lower surface of the sliding part 441a has a spherical surface, and the diameter of the sliding part 441a is larger than the diameter of the rod 442a.

[0110] The first elastic member 443a is sleeved on the rod 442a and can reset the moving member. Specifically, in this embodiment, the upper end of the first elastic member 443a abuts against the lower surface of the support portion 41a, and the lower end abuts against the upper surface of the sliding portion 441a. The first elastic member 443a can be retracted and deformed elastically along the third direction, so that there is an elastic effect between the support portion 41a and the sliding portion 441a. The first elastic member 443a can be a spring or a rubber block or other elastic part. Preferably, in this embodiment, the first elastic member 443a is a spring.

[0111] A first blind hole 411a1 and a second blind hole 411a2 are formed on the front side wall and the rear side wall of the mounting recess 411a. The first blind hole 411a1 and the second blind hole 411a2 are symmetrically arranged about the center line of the mounting recess 411a in the front-to-back direction. A second elastic member 413a and an extrusion member 412a are installed in the first blind hole 411a1 and the second blind hole 411a2. The specific structure is described by taking the first blind hole 411a1 as an example. The first blind hole 411a1 is located on the front side wall of the mounting recess 411a. The first blind hole 411a1 opens rearward. The extrusion piece 412a can be slidably installed in the first blind hole 411a1 relative to the first blind hole 411a1, and the extrusion piece 412a is spherical. The second elastic piece 413a is installed between the extrusion piece 412a and the front wall of the first blind hole 411a1. The second elastic piece 413a can be retracted and elastically deformed in the front-back direction, and an elastic force is generated on the extrusion piece 412a, so that the storage medium 42a can be squeezed by the extrusion piece 412a and fixed relative to the support part, so that the electrical contact surface 43a and the electrical contact pin 613 are kept in the abutment position or the non-abutment position. The second elastic piece 413a can be a spring, a rubber block or other elastic parts. Preferably, the second elastic piece 413a in this embodiment is a rubber block.

[0112] Moreover, sliding grooves 421a are provided on the front side wall and the rear side wall of the storage medium 42a. The sliding grooves 421a are provided on the storage medium 42a along the third direction. A positioning protrusion 422a is provided in the sliding groove 421a. The positioning protrusion 422a protrudes in the second direction toward a direction away from the storage medium 42a. When the storage medium 42a is installed in the mounting recess 411a of the support portion 41a, the end of the extrusion piece 412a is inserted into the sliding groove 421a and can slide relative to the sliding groove 421a.

[0113] Next, the process of contact between the identification assembly and the image forming apparatus when the developing cartridge is installed in the drum assembly and the processing cartridge formed by the drum assembly 5 is installed in the image forming apparatus will be described.

[0114] like Fig.15 When the developing box and the drum assembly 5 form a processing box, which is installed from the outside of the image forming device to the inside of the image forming device, the sliding portion 441a of the movable member slides forward along the second guide surface 614a and moves to the first guide portion 616a. At this time, the sliding portion 441a contacts the first guide portion 616a and is pushed upward by the first guide portion 616a, so that the rod portion 442a moves upward and compresses the first elastic member 443a. The upward movement of the rod portion 442a causes the upper end of the rod portion 442a to move from a state of not contacting the storage medium 42a to a state of contacting the storage medium 42a. And the rod 442a moves upward while pushing the storage medium 42a upward. During the upward movement of the storage medium 42a, the sliding groove 421a moves together with the storage medium 42a. Therefore, the sliding groove 421a moves upward relative to the extrusion member 412a. Since the extrusion member 412a is inserted into the sliding groove 421a, the storage medium 42a is squeezed and positioned by the extrusion member 412a, and the extrusion member 412a is prevented from being separated from the sliding groove 421a. At the same time, the positioning protrusion 422a in the sliding groove 421a also moves upward together with the storage medium 42a, so that the positioning protrusion 422a moves upward from the bottom of the extrusion member 412a; when the positioning protrusion 422a contacts the extrusion member 412a, the extrusion member 412a is squeezed by the positioning protrusion 422a and moves in the front-rear direction in a direction away from the storage medium 42a, thereby causing the second elastic member 413a to be squeezed and deformed by the extrusion member 412a.

[0115] When the positioning protrusion 422a passes through the top of the side of the extrusion member 412a away from the second elastic member 413a in the second direction, the sliding portion 441a enters the first recess 616a as the developing box moves forward. At this time, under the elastic force of the first elastic member 443a, the rod portion 442a and the sliding portion 441a move downward, so that the rod portion 442a is no longer in contact with the storage medium 42a. At the same time, the storage medium 42a and the electrical contact surface 43a also move to the bottom of the identification recess 612a along with the developing box. Since the positioning protrusion 422a has passed the top of the extrusion piece 412a, the positioning protrusion 422a contacts the spherical surface on the upper side of the top of the extrusion piece 412a. Under the elastic force of the second elastic member 413a, the force applied by the spherical surface on the upper side of the top of the extrusion piece 412a to the positioning protrusion 422a has a component force in the up-down direction, so that the storage medium 42a can still move upward after being separated from the rod 442a, so that the electrical contact surface 43a moves upward along with the storage medium 42a and enters the identification recess 612a to contact and electrically connect with the electrical contact. And under the elastic force of the second elastic member 413a, the extrusion piece 412a always applies a force with an upward component to the positioning protrusion 422a, so that the electrical contact surface 43a maintains close contact with the electrical contact to avoid poor contact.

[0116] Therefore, the structure in this embodiment can ensure that the electrical contact surface of the identification component and the electrical contact of the image forming device are always electrically connected, which can ensure the stability of the electrical connection between the identification component of the developer box and the image forming device.

[0117] In this implementation case, the other structures of the developer box are consistent with those in the first implementation and will not be described here.

[0118] Embodiment 3

[0119] like Figures 16 to 18 As shown, another developing box is provided in this embodiment case, and the difference between this embodiment case and embodiment 2 is that: in this embodiment, the identification component is different from that in embodiment 2, the identification component is not provided with a moving part, a guide rail is provided on the support portion 41b, and the storage medium 42b is installed on the guide rail 412b and can move on the support portion 41b so that the electrical contact surface 43b abuts against the electric contact pin 613.

[0120] like Fig.17The left and right walls of the mounting recess 411b on the support portion 41b are provided with guide rails 412b, and the front end of the guide rails 412b is tilted downwards compared to the rear end. The left and right walls of the storage medium 42b are respectively integrally formed with sliding protrusions 421b, and the sliding protrusions 421b protrude leftwards and rightwards from the left and right walls of the storage medium 42b, respectively. When the storage medium 42b is mounted on the mounting recess 411b, the sliding protrusions 421b can be inserted into the guide rails 412b by sliding relative to the guide rails 412b, so that the storage medium 42b can move along the third direction on the support portion 41b.

[0121] Furthermore, a limiting protrusion 413b is provided on the guide rail 412b, which is used to limit the movement of the storage medium 42b, prevent the sliding protrusion 421b from sliding upward out of the guide rail 412b, and the support portion 41b is provided with an opening for the storage medium 42b to extend out of the mounting recess 411b. Specifically, in this embodiment, the limiting protrusion 413b is provided at the upper end of the guide rail 412b, which can prevent the sliding protrusion 421b from sliding upward out of the upper end of the guide rail 412b, and prevent the storage medium 42b from escaping from the support portion; the front end of the support portion 41b is provided with an opening for the front end of the storage medium 42b to extend out of the mounting recess 411b.

[0122] Furthermore, if Fig.18 As shown, in the image forming device, a first interference surface 617b is provided on the first guide surface 611b, and the first interference surface 617b is used to push the storage medium 42b to move on the support portion 41b so that the electrical contact surface 43b abuts against the electrical contact pin 613. Specifically, in this embodiment, the first interference surface 617b is located on the first wall 61 at the front side of the identification recess 612b, and the front end of the first interference surface 617b is tilted downward compared to the rear end.

[0123] In some embodiments, in order to prevent the storage medium 42b from swinging, the sliding protrusion 421b is set on the guide rail 412b so as not to rotate. Specifically, in this embodiment, the sliding protrusion 421b has a contact plane 422b parallel to the front side and the rear side of the guide rail 412b, and the contact plane 422b of the sliding protrusion 421b fits with the side wall of the guide rail in the guide rail, thereby preventing the sliding protrusion 421b from rotating when moving in the guide rail 412b and causing the storage medium 42b to swing, thereby affecting the problem of contact between the electrical contact surface 43b and the storage medium 42b.

[0124] Next, the process of contact between the identification assembly and the image forming apparatus when the developing cartridge is installed in the drum assembly and the processing cartridge formed by the drum assembly 5 is installed in the image forming apparatus will be described.

[0125] like Fig.18When the developing box is attached to the drum assembly and installed in the image forming device along the installation direction, in the initial state, the storage medium 42b is under the action of gravity, and the sliding protrusion 421b of the storage medium 42b is at the lowest end of the guide rail 412b, that is, the storage medium 42b is at the lowest bottom of the installation recess 411b. As the developing box moves along the installation direction, the front end of the storage medium 42b abuts against the first interference surface 617b through the opening, so that the storage medium 42b is blocked by the first interference surface 617b and cannot continue to move along the installation direction with the support part 41b, so that the sliding protrusion 421b slides relative to the guide rail 412b, so that the sliding protrusion 421b slides along the guide rail 412b from the lower end of the guide rail 412b to the upper end of the guide rail 412b, and then the electrical contact surface 43b on the storage medium 42b moves upward and enters the identification recess 612b to contact the electrical contact.

[0126] When the developing box and the drum assembly are taken out of the image forming device, the sliding protrusion 421b of the storage medium 42b is located at the lowermost end of the guide rail 412b again under the action of gravity.

[0127] In this implementation case, the other structures of the developer box are consistent with those in the second implementation and will not be described here.

[0128] Embodiment 4

[0129] like Figures 19 to 25 As shown, another developing box is provided in this embodiment. The difference between this embodiment and embodiment three is that: in this embodiment, the structures of the supporting portion 41c and the identification component are different, and the remaining structures are exactly the same as the developing box structure of embodiment three.

[0130] like Fig. 20 The support portion 41c is also provided with a retaining portion 414c for retaining the position of the storage medium 42c, and is used to keep the electrical contact surface 43c in contact with the electrical contact pin 613. Specifically, in this embodiment, retaining portions 414c are further provided on the left and right walls of the mounting recess 411c on the support portion 41c, and the retaining portions 414c are in the shape of a groove formed by a depression downward from the upper surface of the left or right wall of the mounting recess 411c, and the upper end of the groove-shaped retaining portion 414c is not closed, and in the second direction, the retaining portion 414c is located at the rear side of the guide rail 412c.

[0131] Further, two guide rails 412c and two retaining portions 414c are provided on the left and right walls of the support portion 41c. Correspondingly, two sliding protrusions 421c are integrally formed on the left and right walls of the storage medium 42c, and no limiting protrusion is provided on the upper end of the guide rail 412c, so that the sliding protrusion 421c can slide out of the guide rail 412c from the upper end of the guide rail 412c and fall into the retaining portion 414c of the support portion 41c.

[0132] The identification component also includes a moving part. During the process of attaching and installing the developing box and the drum assembly 5 in the image forming device, the image forming device can act on the moving part, and the moving part rotates so that the moving part pushes the storage medium 42c to move relative to the supporting part 41c, and the electrical contact surface 43c abuts against the electrical contact pin 613.

[0133] Specifically, Fig.24 As shown, a first limiting portion 613c is provided on the first guide surface 611c of the first wall 61 of the image forming device. When the developing box is installed in the image forming device, the first limiting portion 613c acts on the moving part to rotate the moving part, and the moving part pushes the storage medium to move to the retaining portion 414c on the guide rail 412c. The storage medium 42c is electrically connected to the electric contact pin 613 of the image forming device, and the first limiting portion 613c is used to prevent the storage medium 42c or the electric contact surface 43c located in the identification recess 612c from leaving the identification recess 612c under the action of external force.

[0134] like Figure 21 to Figure 23 As shown, the movable member includes an integrally formed pivot portion 442c, a lifting portion 443c and a pressing portion 441c, the lifting portion 443c and the pressing portion 441c are both plate-shaped, the pressing portion 441c is located at the rear side of the lifting portion 443c, the pivot portion 442c is located between the lifting portion 443c and the pressing portion 441c and connects the lifting portion 443c and the pressing portion 441c, the pivot portion 442c is rotatably supported by the left and right walls of the mounting recess 411c, so that the movable member is rotatably mounted in the mounting recess 411c through the pivot portion 442c, and the rotation axis of the movable member is parallel to the rotation axis of the developing roller. After the movable part is installed in the mounting recess 411c, the lifting part 443c is located below the storage medium 42c, and the pressing part 441c is located behind the storage medium 42c. The opening on the rear wall of the mounting recess 411c allows the pressing part 441c to extend backward out of the mounting recess 411c. The rear end of the pressing part 441c is integrally formed with an arc part 444c, and the upper surface of the arc part 444c is an arc surface. When the movable part rotates through the pivot part 442c, the lifting part 443c can switch between a position not in contact with the storage medium 42c and a position in contact with the lower surface of the storage medium 42c.

[0135] Further, when the moving member is installed in the mounting recess 411c, a third elastic member 45c is provided between the moving member and the supporting portion 41c. Specifically, in the present embodiment, a first slot 445c is provided on the pivoting portion 442c of the moving member, the first slot 445c extends in the left-right direction, and a positioning column 446c protruding to the right and to the left is provided on the left wall and the right wall of the first slot 445c, respectively, and a third elastic member 45c is sleeved on the positioning column 446c, and the third elastic member 45c is preferably a torsion spring, and the third elastic member 45c is supported by the positioning column 446c, and the third elastic member 45c includes a first action end 451c and a second action end 452c, the first action end 451c is against the supporting portion 41c, and the second action end 452c is against the lower surface of the pressing portion 441c, so that the third elastic member 45c specifically acts on the supporting portion and the moving member through the elastic force.

[0136] On the first wall 61, the first limiting portion 613c is located at the rear side of the identification recess 612c, and the first limiting portion 613c protrudes downward from the first guide surface 611c in the third direction. The lower end of the first limiting portion 613c is lower than the identification recess 612c in the up and down direction.

[0137] In some embodiments, a first limiting flange 422c is integrally formed on the left and right walls of the storage medium 42c, and a second limiting flange 413c protruding toward the direction close to the storage medium 42c is integrally formed on the upper ends of the left and right walls of the mounting recess 411c. When the sliding protrusion 421c of the storage medium 42c enters the retaining portion 414c, the first limiting flange 422c of the storage medium 42c cooperates with the second limiting flange 413c of the mounting recess 411c, and the first limiting flange 422c is blocked by the second limiting flange 413c, thereby preventing the storage medium 42c from slipping out of the mounting recess 411c upward.

[0138] Next, the process of contact between the identification assembly and the image forming apparatus when the developing cartridge is installed in the drum assembly and the processing cartridge formed by the drum assembly 5 is installed in the image forming apparatus will be described.

[0139] like Fig.24 , Fig.25 During the process of the developing box being attached to the drum assembly 5 and installed into the image forming device along the installation direction, the storage medium 42c is maintained at the bottom of the guide rail 412c under the action of gravity, that is, the sliding protrusion 421c is also located at the bottom of the guide rail 412c.

[0140] Then, as the developing box moves forward, when the pressing down portion 441c passes through the first limiting portion 613c, the pressing down portion 441c contacts the first limiting portion 613c and is subjected to the reaction force provided by the first limiting portion 613c, so that the pressing down portion 441c drives the moving part to rotate clockwise, and then the lifting portion 443c tilts upward clockwise, so that the lifting portion 443c moves from a position where it does not contact the storage medium 42c to a position where it contacts the lower surface of the storage medium 42c, and then the storage medium 42c is subjected to an upward force, so that the storage medium 42c drives the sliding protrusion 421c to move upward along the guide rail 412c. Furthermore, when the arc portion 444c of the movable part contacts the lowest point of the lower end of the first limiting portion 613c, the storage medium 42c is lifted to the highest point by the lifting portion 443c, so that the sliding protrusion 421c is upwardly separated from the guide rail 412c and enters the retaining portion 414c on the rear side of the guide rail 412c, and is supported and positioned by the retaining portion 414c, so that the electrical contact surface 43c on the storage medium 42c can enter the identification recess 612c, contact the electrical contact pin 613 and be electrically connected.

[0141] As the developing box continues to move along the installation direction, the arc portion 444c moves to the front side of the lowest point of the lower end of the first limiting portion 613c. At this time, under the elastic force of the third elastic member 45c, the moving member rotates counterclockwise, causing the pressing portion 441c to swing upward and the lifting portion 443c to swing downward, so that the lifting portion 443c moves from a position in contact with the storage medium 42c to a position out of contact with the storage medium 42c. When the developing box is successfully installed along the installation direction, the lifting portion 443c remains out of contact with the storage medium 42c, avoiding the lifting portion 443c from continuously applying external force to the storage medium 42c, which causes the contact pressure between the electrical contact surface 43c and the electrical contact to be too large and damaged.

[0142] When the developing box is taken out of the image forming device, the user takes out the developing box along the taking-out direction (from front to rear), so that the developing box moves backward, and the storage medium 42c moves backward together with the developing box, so that the rear end of the storage medium 42c contacts the first limiting portion 613c, and the first limiting portion 613c applies a forward force to the storage medium 42c, so that the storage medium 42c moves forward from the retaining portion 414c and enters the guide rail 412c, so that when the developing box is taken out of the image forming device, the storage medium 42c will not be squeezed and damaged by the first limiting portion 613c.

[0143] In this implementation case, the other structures of the developer box are consistent with those in the third implementation and will not be described here.

[0144] Embodiment 5

[0145] refer to Figures 26 to 30As shown, another developing box is provided in this embodiment. The difference between this embodiment and embodiment 2 is that: in this embodiment, the moving part and the sliding hole 414d are different from those in embodiment 2, and the mounting recess 411d is also provided with a guide rail 412d and a retaining portion 413d which are the same as those in embodiment 4. The specific structure and principle will not be repeated here.

[0146] refer to Fig.29 The projection of the sliding hole 414d of the support portion 41d in the up-down direction is a rectangle, the left end of the sliding hole 414d is inclined further forward than the right end, and an arc track 415d extending along the length direction of the sliding hole 414d is provided on the inner wall of the sliding hole 414d. In the third direction, the middle part of the arc track 415d is higher than the two end parts.

[0147] refer to Fig.28 The moving part includes a rod portion 442d and a sliding portion 441d. The lower surface of the sliding portion 441d has a spherical surface. The rod portion 442d is bent in multiple sections, and a convex portion 443d is integrally formed on the outer circumferential surface of the rod portion 442d. When the rod portion 442d is installed in the sliding hole 414d, the convex portion 443d is inserted into the arc track 415d and can slide in the arc track 415d, thereby limiting the movement of the moving part.

[0148] The image forming device is further provided with a first recess 615d on the second guide surface 614d. The first recess 615d is located in front of the first guide portion 616d in the installation direction of the developing cartridge (ie, the second direction).

[0149] Next, the process of contact between the identification assembly and the image forming apparatus when the developing cartridge is installed in the drum assembly and the processing cartridge formed by the drum assembly 5 is installed in the image forming apparatus will be described.

[0150] refer to Fig.30 When the developing box is attached to the drum assembly 5 and installed from the outside of the image forming device to the inside of the image forming device, the sliding portion 441d moves along the surface of the first guide portion 616d, and the first guide portion 616d applies an upward force to the sliding portion 441d, so that the rod portion 442d drives the protrusion 443d to move upward.

[0151] Since the protrusion 443d is inserted into the arc track 415d, the protrusion 443d moves upward and moves rightward along the arc track 415d, so that the rod 442d moves upward and moves rightward at the same time. When the rod 442d moves upward to the middle part of the arc track 415d, it reaches the highest point. At this time, the upper end of the rod 442d pushes the storage medium 42d to move upward along the guide rail 412d to the holding part 413d and then contacts the electric contact pin 613. Then, as the sliding part 441d moves, the sliding part 441d passes through the first guide part 616d and enters the first recess 615d on the front side of the first guide part 616d. The sliding part 441d and the rod 442d move downward under the action of their own weight, and at the same time, the protrusion 443d continues to move rightward along the arc track 415d, so that the upper end of the rod 442d is out of contact with the storage medium 42d, so as to prevent the rod 442d from continuously applying pressure to the storage medium 42d.

[0152] When the developer box is taken out, the storage medium 42d moves from the retaining portion 413d to the guide rail 412d. The principle is the same as that of Example 3. At the same time, the sliding portion 441d contacts the first guide portion 616d again and moves upward, and the rod portion 442d and the sliding protrusion 443d move upward and leftward along the arc track 415d to the initial position.

[0153] In this implementation case, the other structures of the developer box are consistent with those in the second implementation and will not be described here.

[0154] Embodiment 6

[0155] like Figure 31 to Figure 32 As shown, another developing box is provided in this embodiment case. The difference between this embodiment and embodiment 1 is that: in this embodiment, the structure of the identification component is different. The storage medium 42e of the identification component can be rotated on the support part 41e under the action of the image forming device, so that the electrical contact surface 43e abuts against the electrical contact pin 613 of the image forming device.

[0156] like Fig.31The storage medium 42e also includes a main body plate 45e, and the storage medium 42e and the electric contact surface 43e are both mounted on the main body plate 45e. When the developing box is installed in the mounting cavity of the image forming device, the supporting portion 41e and the storage medium 42e are located below the identification recess 612e and are spaced apart from the electric contact pin 613 in the up and down directions. The main body plate 45e can be rotated on the mounting recess 411e, and the electric contact surface 43e can be electrically connected to the electric contact pin 613 by rotating the main body plate 45e. Specifically, in this embodiment, the main body plate 45e is a roughly rectangular plate-like structure, the electrical contact surface 43e is fixedly mounted on the upper end surface of the substrate 45e, the left and right ends of the main body plate 45e are integrally formed with a pivot portion 452e aligned in the first direction, a pivot hole 411e1 is provided on the mounting recess of the support portion 41e for inserting the pivot portion 452e, the pivot portion 452e of the main body plate 45e is installed in the pivot hole 411e1, so that the electrical contact surface 43e and the storage medium 42e can rotate around the pivot portion 452e, and the rotation axis is parallel to the first direction, so that the electrical contact surface 43e can rotate to be electrically connected to the electrical contact pin 613.

[0157] Further, the pivot portion 452e is located at the center portion of the base plate 45e in the front-rear direction, so that the weight of the front and rear sides of the base plate 45e is balanced.

[0158] Furthermore, the front end of the main body plate 45e in the second direction has a first guide slope 451e, the front end of the first guide slope 451e is lower than the rear end in the third direction, and the front end of the main body plate 45e can extend out of the mounting recess 411e of the support portion 41e.

[0159] In some embodiments, in the image forming device, as in Example 3, a first interference surface 617e and a first limiting portion 613e are provided on the first guide surface 611e, the first interference surface 617e is located on the first wall 61 in front of the identification recess 612e, the front end of the first interference surface 617e is inclined downward compared to the rear end, and the first limiting portion 613e is located on the rear side of the identification recess 612e.

[0160] Next, a description will be given of a process in which the identification assembly contacts the image forming apparatus when the developing cartridge is installed in the drum assembly 5 and the process cartridge formed by the drum assembly 5 is installed in the image forming apparatus.

[0161] When the developing box is attached to the drum assembly 5 and installed in the image forming device, the pivoting portion 452e is first located below the lower end of the first limiting portion 613e, and the front end of the main body plate 45e extends out of the supporting portion 41e.

[0162] When the developer box continues to be installed in the image forming device, the first guide slope 451e at the front end of the main plate 45e abuts against the first interference surface 617e, so that the first guide slope 451e is subjected to the reaction force provided by the first interference surface 617e, causing the main plate 45e to rotate counterclockwise around the pivot portion 452e, so that the front end of the main plate 45e swings downward and the rear end swings upward, and the electric contact surface 43e on the upper end surface of the main plate 45e swings together with the base plate 45e, so that the rear part of the electric contact surface 43e swings upward and enters the identification recess 612e, and contacts and electrically connects with the electric contact pin 613.

[0163] The identification component provided in the developer box of this embodiment enables the storage medium to rotate relative to the support portion, thereby achieving the purpose of contact between the electrical contact surface and the electrical contact pin, reducing the number of parts and components and lowering the manufacturing cost of the developer box.

[0164] In this implementation case, the other structures of the developer box are consistent with those in the first implementation and will not be described here.

[0165] Embodiment 7

[0166] like Figure 33 to Figure 35 As shown, another developing box is provided in this embodiment. The difference between this embodiment and embodiment four is that: the moving part in this embodiment is a pressing lever 46f, and the pressing lever 46f can rotate to push the storage medium 42f to move on the guide rail 412f, and the image forming device can push the storage medium 42f to the retaining portion 414f.

[0167] like Fig.33 , as in the fourth embodiment, two guide rails 412f and two retaining portions 414f are respectively provided on the left and right walls of the mounting recess 411f of the support portion 41f, and the guide rails 412f are all inclined, the lower end of the guide rail 412f is closer to the front than the upper end, the upper end of the guide rail 412f is upwardly open, and the retaining portion 414f is located at the rear side of the guide rail 412f in the second direction. The identification component also includes a substrate 45f, the storage medium 42f and the electrical contact surface 43f are fixedly mounted on the substrate 45f, and the left and right end surfaces of the substrate 45f are integrally formed with sliding protrusions 451f for sliding in the guide rails 412f.

[0168] Furthermore, the pressing lever 46f is disposed on the first protective cover 111, and can be rotated on the first protective cover 111 under force, so as to push the storage medium 42f to move on the guide rail 412f. Specifically, in the present embodiment, a support shaft 1111f is also integrally formed on the first protective cover 111, and the pressing lever 46f includes a pressing portion 461f, a rotating portion 462f, and a pushing portion 463f which are integrally formed in sequence from the back to the front, and the rotating portion 462f is rotatably mounted on the supporting shaft 1111f, so that the pressing lever 46f can rotate around a rotation axis parallel to the first direction, and the rotation axis of the pressing lever 46f is parallel to the rotation axis (first direction) of the developing roller 131. The support shaft 1111f is located on the first protective cover 111 on the rear side of the support part 41f, and the pressing lever 46f is installed behind the support shaft 1111f, the front end of the pushing part 463f extends into the mounting recess 411f and is located below the storage medium 42f, the pressing part 461f is located behind the storage medium 42f, and the pressing part 461f is also tilted at the rear end, and when the pressing lever 46f rotates through the rotating part 462f, the pushing part 463f can switch between a position not in contact with the storage medium 42f and a position in contact with the lower surface of the storage medium 42f.

[0169] Furthermore, a fourth elastic member 47f is sleeved on the support shaft 1111f, and the fourth elastic member 47f can reset the movable member after rotation. Preferably, the fourth elastic member 47f in this embodiment is a torsion spring, and the elastic member 47f in other embodiments can also be a tension spring, a compression spring, etc., which is not limited here. One end of the fourth elastic member 47f is a fixed end 471f abutting against the support part 41f, and the other end is a force-applying end 472f abutting against the push part 463f, so that there is an elastic effect between the support part 41f and the push lever 46f.

[0170] In some embodiments, in the image forming device, as in Example 3, a first interference surface 617f and a first limiting portion 613f are provided on the first guide surface 611f, the first interference surface 617f is located on the first wall 61 in front of the identification recess 612f, the front end of the first interference surface 617f is tilted downward compared to the rear end, and the first limiting portion 613f is located on the rear side of the identification recess 612f.

[0171] Next, a description will be given of a process in which the identification assembly contacts the image forming apparatus when the developing cartridge is installed in the drum assembly 5 and the process cartridge formed by the drum assembly 5 is installed in the image forming apparatus.

[0172] refer to Fig.35When the developing box is attached to the drum assembly 5 and then installed in the image forming device, the upper surface of the supporting portion 41f is located on the lower side of the lower end of the first limiting portion 613f, so that the supporting portion 41f will not come into contact with the first limiting portion 613f when passing through the first limiting portion 613f during the installation process, while the storage medium 42f and the electrical contact surface 43f are located in the installation recess 411f, thereby avoiding the supporting portion 41f, the storage medium 42f and the electrical contact surface 43f from colliding with the first limiting portion 613f and being damaged.

[0173] Then, the user can manually press the pressing portion 461f of the lever 46f downward, so that the pressing lever 46f rotates clockwise, and the pushing portion 463f of the pressing lever 46f tilts upward to push the substrate 45f to slide upward along the guide rail 412f. In the process of the substrate 45f moving upward along the guide rail 412f, the front end of the substrate 45f contacts and interferes with the first interference surface 617f, so that the substrate 45f receives the reaction force provided by the first interference surface 617f, and at the same time, the sliding protrusion 451f of the substrate 45f leaves the guide rail 412f and enters the holding portion 414f, so that the electrical contact surface 43f enters the identification recess 612f and contacts and electrically connects with the electrical contact pin 613.

[0174] After the push lever 46f completes pushing the substrate 45f, the user no longer applies force to the lever 46f, and the push lever 46f rotates counterclockwise and resets under the action of the fourth elastic member 47f, and the substrate 45f is supported by the retaining portion 414f and stays in the retaining portion 414f to maintain electrical contact with the electrical contact pin 613.

[0175] When it is necessary to take out the developing box, the developing box moves backward, and the force of the developing box moving backward acts on the sliding protrusion 451f through the retaining portion 414f, so that the sliding protrusion 451f drives the substrate 45f to move backward. During the backward movement of the substrate 45f, the rear end of the substrate 45f contacts the first limiting portion 613f, and the first limiting portion 613f applies a forward reaction force to the substrate 45f, so that the substrate 45f slides forward relative to the mounting recess of the support portion 41f, and the sliding protrusion 451f enters the guide rail 412f again. Under the action of gravity, the sliding protrusion 451f slides along the guide rail 412f to the bottom of the guide rail 412f, so that the substrate 45f enters the mounting recess 411f with the storage medium 42f and the electrical contact surface 43f, so as to avoid damage caused by the squeeze and collision of the electrical contact surface 43f and the storage medium 42f with the first limiting portion 613f during the process of taking out the developing box.

[0176] In this implementation case, the other structures of the developer box are consistent with those in the fourth implementation and will not be described here.

[0177] Embodiment 8

[0178] like Figure 36 to Figure 38 As shown, another developing box is provided in this embodiment case, and the difference between this embodiment case and embodiment case three is that: the identification component in this embodiment is different from that in embodiment three, and a fifth elastic member 48g is provided between the storage medium 42g and the mounting recess 411g in this embodiment, and the storage medium 42g can overcome the elastic force of the fifth elastic member 48g and move on the mounting recess 411g, so that the storage medium 42g can move relative to the support portion 41g.

[0179] refer to Fig.37 The support part 41g on the identification component is provided with a mounting recess 411g, which is recessed from front to back and formed at the upper end of the support part. The storage medium 42g is provided in the mounting recess 411g, and the electrical contact surface 43g is fixedly provided at the upper end of the storage medium 42g. The mounting recess 411g is also provided with a fifth elastic member 48g made of a foaming material. Preferably, the fifth elastic member 48g is a sponge. In some other embodiments, the fifth elastic member 48g can also be provided as a spring or other elastic part, which is not limited here. The fifth elastic member 48g is fixedly provided on the left wall, right wall, upper wall and lower wall of the mounting recess 411g by gluing, and the fifth elastic member 48g is fixedly connected with the left wall, right wall, upper wall and lower wall of the storage medium 42g by gluing, and the storage medium 42g fixedly provided with the fifth elastic member 48g is installed and positioned in the mounting recess 411g. Alternatively, in some other embodiments, the fifth elastic member 48g may be first fixed to the storage medium 42g, and then the storage medium 42g may be installed in the mounting recess 411g, as long as the fifth elastic member 48g provides elasticity between the mounting recess 411g and the storage medium 42g.

[0180] Next, a description will be given of a process in which the identification assembly contacts the image forming apparatus when the developing cartridge is installed in the drum assembly 5 and the process cartridge formed by the drum assembly 5 is installed in the image forming apparatus.

[0181] When the developing box is attached to the drum assembly 5 and is installed from the outside of the image forming device into the image forming device, since the sponge (the fifth elastic member 48g) can be compressed and stretched, when the storage medium 42g contacts an obstacle in the image forming device, the storage medium 42g can compress the fifth elastic member 48g, thereby elastically avoiding the obstacle and preventing the storage medium 42g from being damaged by collision or squeezing. Specifically, when the storage medium 42g is installed in the image forming device and contacts the first limiting portion 613g in the image forming device, the storage medium 42g can compress the fifth elastic member 48g, thereby elastically avoiding the first limiting portion 613g.

[0182] When the storage medium 42g has been installed in place, the electrical contact surface 43g abuts against the electric contact pin 613 and is thus subjected to a backward squeezing force exerted by the electric contact pin 613, thereby compressing the fifth elastic member 48g at the rear end of the storage medium 42g. The fifth elastic member 48g provides elastic force for the storage medium, so that the storage medium 48g remains in contact with the electric contact pin 613.

[0183] When the developing box is separated from the drum roller, the first end 11 of the box body 10 will swing backward. At this time, the fifth elastic member 48g at the rear end of the storage medium 42g provides a forward elastic force to enable the storage medium 42g to maintain stable contact with the identification component, thereby avoiding the storage medium 42g driving the electrical contact surface 43g to move backward with the box body 10, resulting in the electrical contact surface 43g being disconnected from the electrical contact pin 613.

[0184] In this implementation case, the other structures of the developer box are consistent with those in the third implementation and will not be described here.

[0185] Embodiment 9

[0186] refer to Figure 39 to Figure 42 As shown, another developing box is provided in this embodiment. The difference between this embodiment and the second embodiment is that the structure of the supporting portion 41h is different from that of the first embodiment.

[0187] refer to Fig.40The support part 41h includes a support member 415h and a support frame 416h, and the storage medium 42h and the electrical contact surface 43h are both mounted on the support member 415h. The support member 415h can move on the support frame 416h, so that the storage medium 42h can move on the support part 41h. Specifically, in this embodiment, the upper end of the support member 415h is provided with a mounting recess 411h, and the mounting recess 411h is formed by being recessed from top to bottom. The storage medium 42h is fixedly mounted in the mounting recess 411h by gluing and mounted on the support member 415h. The electrical contact surface 43h is arranged at the upper end of the storage medium 42h, and the third direction intersects with the electrical contact surface 43h. The rear end of the support member 415h is integrally formed with a first guide protrusion 415h1 and a second guide protrusion 415h2. The first guide protrusion 415h1 and the second guide protrusion 415h2 protrude downward from the lower end surface of the support member 415h along the third direction. The first guide protrusion 415h1 and the second guide protrusion 415h2 are cylindrical. The support frame 416h is arranged on the first protective cover 111, and is provided with an upwardly opening guide through hole 416h1. The number of the guide through holes 416h1 is two, and the projections of the guide through holes 416h1 in the third direction overlap with the projections of the first guide protrusion 415h1 and the second guide protrusion 415h2 in the third direction, respectively, so that the first guide protrusion 415h1 and the second guide protrusion 415h2 can be respectively inserted into the guide through hole 416h1 and loosely matched with the guide through hole 416h1, and the first guide protrusion 415h1 and the second guide protrusion 415h2 can slide in the third direction relative to the guide through hole 416h1, so that the support member 415h can move on the support frame 416h.

[0188] And because the first guide protrusion 415h1 and the second guide protrusion 415h2 are provided and respectively cooperate with the two guide through holes 416h1, the support member 415h is limited in the circumferential direction of the first guide protrusion 415h1 and the second guide protrusion 415h2 and will not rotate around the first guide protrusion 415h1 or the second guide protrusion 415h2, thereby preventing the electrical contact surface 43h from rotating and being unable to align one-to-one with the electrical contact pins 613 in the image forming device.

[0189] Furthermore, a sixth elastic member 48h is provided between the support member 415h and the support frame 416h, so that there is an elastic force between the support member 415h and the support frame 416h. Specifically, in this embodiment, a sixth elastic member 48h is sleeved on the second guide protrusion 415h2, and the sixth elastic member 48h is preferably a spring, one end of which abuts against the upper end surface of the support frame 416h, and the other end abuts against the lower end surface of the support member 415h, so that there is an elastic force between the support member 415h and the support frame 416h.

[0190] Furthermore, the support member 415h is provided with a locking protrusion 415h3 to prevent the support member 416h from slipping out. Specifically, in this embodiment, the rear end of the second guide protrusion 415h2 is integrally provided with a first cantilever portion 415h4 and a second cantilever portion 415h5, the first cantilever portion 415h4 and the second cantilever portion 415h5 are semi-cylindrical, and there is a gap between the first cantilever portion 415h4 and the second cantilever portion 415h5 in the radial direction of the second guide protrusion 415h2, so that the first cantilever portion 415h4 and the second cantilever portion 415h5 can move relatively elastically. The first cantilever portion 415h4 and the second cantilever portion 415h5 are provided with a snap-fitting protrusion 415h3 on the circumferential surface thereof, which protrudes in the radial direction of the second guide protrusion 415h2 in a direction away from the central axis of the second guide protrusion 415h2. The distance from the radial end of the snap-fitting protrusion 415h3 to the central axis of the second guide protrusion 415h2 is greater than the radius of the guide through hole 416h1. The front end of the snap-fitting protrusion 415h3 is provided with an arc surface, so that when the support member 415h is installed on the support frame 416h, it is only necessary to align the second guide protrusion 415h2 on the support member 415h with the guide through hole 416h1 and insert and press it into the guide through hole 416h1. At this time, the arc surface of the snap-fitting protrusion 415h3 is aligned with the guide through hole 416h1. The edges of the through hole 416h1 contact each other, causing the first cantilever portion 415h4 and the second cantilever portion 415h5 to produce elastic deformation in a direction of approaching each other, and the second guide protrusion 415h2 enters the guide through hole 416h1; when the engaging protrusion 415h3 completely passes through the guide through hole 416h1, the elastic deformation of the first cantilever portion 415h4 and the second cantilever portion 415h5 disappears, because the distance from the radial end of the engaging protrusion 415h3 in the second guide protrusion 415h2 to the central axis of the second guide protrusion 415h2 is greater than the radius of the guide through hole 416h1, the engaging protrusion 415h3 cannot pass through the guide through hole 416h1 upward, thereby limiting the support member 415h in the forward direction, preventing the support member from falling off the support frame 416h. Alternatively, in some other embodiments, the engaging protrusion 415h3 can also be provided on the first guide protrusion 415h1 of the support member 415h.

[0191] Next, a description will be given of a process in which the identification assembly contacts the image forming apparatus when the developing cartridge is installed in the drum assembly 5 and the process cartridge formed by the drum assembly 5 is installed in the image forming apparatus.

[0192] During the installation of the developing box, when the storage medium 42h encounters an obstacle in the image forming device, the storage medium 42h is squeezed by the obstacle, causing the support member 415h to move downward along the third direction and squeeze the sixth elastic member 48h. The sixth elastic member 48h produces elastic deformation, so that the storage medium 42h can elastically avoid the obstacle and prevent the storage medium 42h from being damaged by collision.

[0193] When the storage medium 42h has been installed in place, the electrical contact surface 43h abuts against the electrical contact pin 613 and is thus subjected to a backward squeezing force exerted by the electrical contact pin 613, thereby compressing the sixth elastic member 48h. The sixth elastic member 48h provides elastic force for the storage medium, so that the storage medium 42h remains in contact with the electrical contact pin 613.

[0194] When the developing box is separated from the drum roller, the first end 11 of the box body 10 will swing downward, and the sixth elastic member 48h provides an upward elastic force so that the support member 415h pushes the storage medium 42h forward relative to the box body 10, so that when the box body 10 moves backward, the storage medium 42h moves upward relative to the box body, so that the electrical contact surface 43h maintains stable contact with the identification component, and avoids the problem that the storage medium 42h drives the electrical contact surface 43h to move backward with the box body 10, resulting in the electrical contact surface 43h being disconnected from the electrical contact pin 613.

[0195] In this implementation case, the other structures of the developer box are consistent with those in the second implementation and will not be described here.

[0196] The developer box of the utility model reduces the number of parts of the developer box by setting the electrical contact surface of the developer box to be movable relative to the box body, eliminating the need to set a component that enables the chip rack to move relative to the box body, and the dynamic structure of the electrical contact surface is relatively simple, easy to install, and the point contact surface is easy to contact with the electrical contact terminal.

[0197] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A developing cartridge, which can be detachably combined with a drum assembly and installed together in an image forming device, wherein the image forming device includes an electric contact pin, characterized in that: The developing box comprises: a box body in which a developer can be stored, the box body having a first end and a second end opposite to each other in a first direction, and a fifth end and a sixth end in a third direction; a developing roller rotatable about an axis extending in a first direction; a driving unit, disposed at the first end of the box body, for receiving a driving force from the image forming device; and an identification component, comprising a support portion fixed to the first end of the box body, a storage medium and an electrical contact surface, wherein the storage medium stores information of the developing box, and the electrical contact surface can contact and be electrically connected with the electrical contact pin so that the image forming device reads the information stored in the storage medium; Wherein, when the developing box is installed in the image forming device, the storage medium can move relative to the supporting portion.

2. A developing cartridge according to claim 1, characterized in that: An elastic member is further provided between the storage medium and the supporting portion, and when the developing cartridge is mounted on the image forming device, the storage medium interferes with a first limiting portion on the image forming device so that the storage medium moves downward along a third direction relative to the supporting portion, thereby compressing the elastic member; When the storage medium faces the electrical contact pin in the third direction, the storage medium moves upward relative to the support portion along the third direction under the action of the elastic member, so that the electrical contact surface contacts the electrical contact pin.

3. A developing cartridge according to claim 1, characterized in that: The support portion is provided with a guide rail, and the storage medium is provided with a sliding protrusion. When the storage medium is installed on the support portion, the storage medium can be displaced relative to the support portion along the guide rail by cooperating with the sliding protrusion and the guide rail.

4. A developing cartridge according to claim 3, characterized in that: When the developing box is installed in the image forming device, the storage medium abuts against a first inclined surface on the image forming device, so that the storage medium is displaced in a third direction relative to the supporting portion along the guide rail.

5. A developing cartridge according to claim 4, characterized in that: A limiting protrusion for limiting the movement of the storage medium is provided on one side of the guide rail close to the fifth end in the third direction.

6. A developing cartridge according to claim 3, characterized in that: The developing box is also provided with a moving part. When the developing box is installed in the image forming device, the moving part can be forced to push the storage medium to generate displacement relative to the supporting part.

7. A developing cartridge according to claim 6, characterized in that: The support portion is provided with a retaining portion on one side close to the fifth end in the third direction, and when the storage medium moves along the guide rail to contact and cooperate with the electric contact pin, the sliding protrusion can cooperate with the retaining portion to fix the storage medium.

8. A developing cartridge according to claim 6, characterized in that: When the developing box is installed on the image forming device, the moving member rotates relative to the supporting portion under the action of the first limiting portion on the image forming device and then acts on the storage medium, so that the storage medium moves relative to the supporting portion.

9. A developing cartridge according to claim 6, characterized in that: When the developing box is installed on the image forming device, the moving member moves up and down in the third direction relative to the developing box under the action of the first guide portion on the image forming device and then acts on the storage medium, so that the storage medium moves relative to the supporting portion.

10. A developing cartridge according to claim 9, characterized in that: The support portion is provided with an extrusion piece which can elastically move and extrudes the storage medium on the support portion. The storage medium can be fixed relative to the support portion by the extrusion of the extrusion piece, so that the electric contact pin is kept in an abutting position or a non-abutting position.

11. A developing cartridge according to claim 6, characterized in that: An elastic member for resetting the moving member is also provided between the moving member and the supporting portion.

12. A developing cartridge according to claim 6, characterized in that: The moving member is arranged on the first protective cover at the first end of the box body; or the moving member is arranged on the supporting part.

13. A developing cartridge according to claim 6, characterized in that: The movable member is also provided with a convex portion, and the supporting portion is also provided with an arc track for limiting the movement of the convex portion. When the developing box is installed on the image forming device, the movable member moves along the arc track under the action of the first guide portion on the image forming device.

14. A developing cartridge according to claim 1, characterized in that: The storage medium can be rotatably mounted on the support portion, and the image forming device is provided with a first interference surface. When the developing box is installed on the image forming device, the first interference surface acts on the storage medium to push the storage medium to rotate so that the electrical contact surface abuts against the electrical contact pin.

15. A developing cartridge according to claim 14, characterized in that: A first guiding slope is provided at the front end of the storage medium. When the developing box is installed in the image forming device, the first interference surface abuts against the first guiding slope, so that the storage medium rotates relative to the supporting portion.

Images