Developing box and image forming device

Abstract

The present invention relates to the technical field of printing equipment, and provides a developing box and an image forming device, wherein the developing box comprises: a box body; a photosensitive member, which is arranged on the box body, and the photosensitive member comprises a drum member and a charging member attached to the surface of the drum member; a powder feeding member, which is arranged on the box body, and comprises a first roller and a storage cavity for storing toner; a detection member, which is arranged on the box body, and comprises an actuator and a detected member connected to the actuator, the actuator is located at one end of the drum core and can rotate with the drum member, the detected member is close to one end and can move along a first direction, the actuator has a push surface surrounding its rotation axis, the detected member contacts the push surface, and the push surface has a conductive part that is conductive with the drum core. The present invention can realize the detection of the rotation of the drum member by the image forming device, and the structure is simple and compact, and will not affect the rotation process of the drum member, and has a long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a developing box and an image forming device. Background Art

[0002] At present, printing equipment is widely used in offices and homes, and has at least one of the functions of printing, scanning, copying, faxing, etc. Among them, there is a printer that uses electronic imaging technology to print images. Under the scanning action of LSU (laser scanning unit), the printer forms an electrostatic latent image on the surface of the photosensitive drum, and then the developing roller transfers the toner for imaging to the photosensitive drum, and the image formed on the photosensitive drum is transferred to the printing medium under the action of the transfer component.

[0003] Among them, because the LSU scans the photosensitive drum line by line along the axial direction of the photosensitive drum, thereby forming an electrostatic latent image, the length of the electrostatic latent image formed on the photosensitive drum surface is calculable. On this basis, the length of the photosensitive drum surface can be set to an integer multiple of the length of the corresponding paper, and the length of the image formed can be calculated by calculating the number of turns the photosensitive drum has passed, so as to adapt to the imaging process of the corresponding paper.

[0004] However, there is currently no detection component for the photosensitive drum, making it difficult to obtain the rotation status of the photosensitive drum. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a developing box and an image forming device to solve the problem that the printer cannot know the rotation status of the drum.

[0006] In a first aspect, the present invention provides a developing box for providing colorant to an image forming device, comprising: a box body; a photosensitive component, arranged on the box body, the photosensitive component comprising a drum member and a charging member attached to the surface of the drum member, the drum member comprising a cylindrical shell and a drum core passing through the axial center of the shell, the shell forming a photosensitive layer on its surface, the drum core is conductive but insulated from the shell, and the charging member is used to charge the photosensitive layer; a powder feeding component, arranged on the box body, comprising a first roller and a storage cavity for storing colorant, the first roller is placed at the cavity mouth of the storage cavity and abuts against the photosensitive layer; a detection component, arranged on the box body, comprising an actuator and a detected member connected to the actuator, the actuator is located at one end of the drum core and can rotate with the drum member, the detected member is close to the one end and can move in a first direction, and the actuator The member has a pushing surface surrounding its rotation axis, and the detected member is in contact with the pushing surface, wherein the pushing surface has a conductive portion that is electrically connected to the drum core, and the conductive portion is located at one position of the pushing surface. When the detected member is abutted at this position, the detected member moves in the first direction to be detected by the detection component on the image forming device; the detection member also includes a first electrical connector, and the box body has an end cover, and the end cover has a storage portion that can accommodate the drum core and the one end of the actuator, the first electrical connector is located in the actuator and has an extension portion extending to the pushing surface to form the conductive portion; the actuator has a connecting groove that is electrically connected to the storage portion, and when one end of the drum core is stored in the storage portion, the first electrical connector abuts against the one end in the axial direction and is located on the outside of the one end.

[0007] In a preferred embodiment of the present invention, the actuator includes a rotating body and an edge surrounding the rotating body, the push surface is arranged on the side of the edge away from the drum member, and the rotating body has a receiving groove on the side close to the drum member for receiving one end of the drum core.

[0008] In a preferred embodiment of the present invention, a key recess is provided in the accommodating groove, and a key component cooperating with the key recess is provided on the one end of the drum member.

[0009] In a preferred embodiment of the present invention, when the push surface extends in the circumferential direction around the rotating body, it gradually moves toward a side away from the drum core in the axial direction, and the detection member further includes an elastic member arranged in the end cover, and the detected member abuts against the push surface under the action of the elastic member;

[0010] Wherein, the push surface has a connecting section at a position where the nearest end and the farthest end of the drum core are connected relative to each other in the axial direction. When the drum member rotates to rotate the actuator, the push surface drives the detected member to gradually move along the first direction, and when the detected member approaches the position of the connecting section, the detected member is detected by the detection component of the image forming device.

[0011] In a preferred embodiment of the present invention, the detection component further comprises a second electrical connector disposed in the end cover, the second electrical connector being located on a side of the detected component away from the drum core in the axial direction, and the second electrical connector being in conduction with the detection component;

[0012] When the detected member approaches the position of the connection section, the detected member abuts against the second electrical connector.

[0013] In a preferred embodiment of the present invention, the end cover includes a large diameter portion and a small diameter portion which is not on the same axis as the large diameter portion, the storage portion is arranged on the large diameter portion and its axis coincides with the axis of the large diameter portion, the small diameter portion has a docking hole for connecting a detection probe on the detection component, and the second electrical connector extends from the large diameter portion to the docking hole of the small diameter portion and can be engaged with the detection probe connected to the docking hole.

[0014] In a preferred embodiment of the present invention, the box body has a conductive member connected to an external circuit on the other side away from the end cover, and the other end of the drum core is electrically connected to the conductive member.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] With the above-mentioned developing box provided by the present invention, during the rotation of the drum, the actuator on the detection component rotates with the drum core, and during the rotation, the abutting surface is used to push the detected part to move along the first direction, so that the detection component on the image forming device detects. The detection component used in the present invention utilizes the rotation of the drum to convert it into the movement of the detected part in the first direction, and a conductive part is arranged on the abutting surface for conducting when in contact with the detected part. Because the position of the conductive part on the abutting surface is determined, each time the drum rotates one circle, the conductive part is connected to the detected part once, so that the image forming device can detect the rotation of the drum. The structure is simple and compact, and will not affect the rotation process of the drum. It has a long service life, allowing the image forming device to monitor the use of the drum in real time. It can also be used to monitor the service life of the drum, and prompt to replace the photosensitive drum or the entire box assembly when the number of circles corresponding to the service life is reached.

[0017] Other features and advantages of the invention will be described in the following description, and partly become apparent from the description, or understood by implementing the technical solution of the invention. The purpose and other advantages of the invention can be achieved and obtained by the structures and / or processes specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of an image forming device provided by an embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of a developing box provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of a portion of the internal structure of the developing box shown in FIG.

[0021] Figure 4 for Figure 2 A schematic diagram of the structure in which the drum member is mounted on the box assembly;

[0022] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0023] Figure 6 A schematic diagram of the installation structure of the detection component provided by an embodiment of the present invention on the box body;

[0024] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 8 A schematic diagram of the structure of a detection component provided by an embodiment of the present invention;

[0026] Fig. 9 for Figure 8 A schematic diagram of the structure of the actuator shown in FIG.

[0027] Fig.10 for Figure 8 A cross-sectional view of the actuator shown in ;

[0028] Fig.11 for Figure 8 The structural schematic diagram of the detected component is shown in FIG.

[0029] Description of Figure Numbers:

[0030] The device body 100, the paper box 101, the paper feeding assembly 102, the conveying assembly 103, the developing assembly 104, the optical scanning assembly 105, the transfer assembly 106, the fixing assembly 107, and the paper discharge assembly 108;

[0031] Box body 200, end cover 210, storage portion 211, guide rail 212, large diameter portion 213, small diameter portion 214, docking hole 215, spring seat 216;

[0032] Photosensitive member 300, drum member 310, housing 311, photosensitive layer 312, drum core 313, charging member 320, key member 330;

[0033] A powder feeding member 400, a first roller 410, a second roller 420, a storage chamber 430, and a chamber opening 431;

[0034] A driving member 500;

[0035] Detection member 600, actuator 610, abutting surface 611, nearest end 611a, farthest end 611b, conductive portion 612, accommodating groove 613, connecting groove 614, connecting section 615, rotating body 616, edge 617, key recess 618, detected member 620, abutting portion 621, middle portion 622, conducting portion 623, first electrical connector 630, conductive body 631, extending portion 632, second electrical connector 640, elastic member 650;

[0036] Detection probe 700. DETAILED DESCRIPTION

[0037] The following will describe the implementation methods of the present invention in detail in combination with the accompanying drawings and embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. It should be noted that these specific descriptions are only for ordinary technicians in this field to understand the present invention more easily and clearly, rather than a restrictive interpretation of the present invention; for example, the first and second mentioned in the embodiments of the present invention do not constitute a limitation thereto, but are only for expressing the serial numbers of multiple identical or similar devices and mechanisms. Ordinary technicians in this field can also readjust these serial numbers for the convenience of expression or in the process of arranging technical solutions; and alternative solutions are described for some mechanisms in different embodiments, and these alternatives can also be applied to other identical or similar devices and mechanisms; and as long as there is no conflict, the various embodiments in the present invention and the various features in each embodiment can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0038] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments.

[0039] First, the present invention provides an image forming device, referring to Figure 1, including a device body 100 and a paper box 101, a paper feeding component 102, a conveying component 103, a developing component 104, an optical scanning component 105, a transfer component 106, a fixing component 107 and a paper discharge component 108 arranged in the device body 100, the paper box 101 stores printing media, after the paper feeding component 102 picks up the printing media from the paper box 101, the conveying component 103 is used to first transfer the printing media to the transfer component 106, the optical scanning component 105 forms an image on the developing component 104, the transfer component 106 transfers the image to the printing medium, and then the conveying component 103 further conveys the printing medium to the fixing component 107, and after the fixing in the fixing component 107, it is discharged to the outside of the device body 100 through the paper discharge component 108.

[0040] The printing medium can be a recording medium such as paper or sheet material that can be used for printing, and is stored in a stacked state in the paper box 101. The paper feeding assembly 102 includes a paper feeding roller and a paper feeding driving mechanism connected to the paper feeding roller. The paper feeding roller is arranged above the stacked printing medium. Under the action of the paper feeding driving mechanism, the paper feeding roller abuts against the top printing medium in the stack. The paper feeding roller feeds the printing medium into the conveying channel of the conveying assembly 103. The conveying channel passes through the transfer assembly 106, the fixing assembly 107 and the paper discharge assembly 108. The conveying channel is provided with a conveying roller and a correction roller for moving the printing medium. The correction roller is used to calibrate the position of the printing medium in the conveying channel so that the printing medium is in a correct posture during transfer and fixing. The optical scanning assembly 105 includes a laser unit and an optical assembly. After the laser unit emits a light beam, the light beam is transferred to the developing assembly 104 through the optical assembly, so that an image formed by toner for printing is formed inside the developing assembly 104.

[0041] like Figures 2 to 11As shown, the present invention further provides a developing box, which is arranged in the developing assembly 104 of the image forming device, and is used to provide colorant to the image forming device, including a box body 200, a photosensitive member 300 and a powder feeding member 400, the photosensitive member 300 includes a drum member 310 and a charging member 320 attached to the surface of the drum member 310, including a cylindrical shell 311 and a drum core 313 passing through the axial position of the shell 311, the shell 311 forms a photosensitive layer 312 on its surface, the photosensitive layer 312 is made of photosensitive material, and can form an electrostatic latent image under the irradiation of a light beam when fully charged, the box body 200 includes a shell, the powder feeding member 400 includes a first roller 410, a second roller 420, a storage cavity 430 for storing colorant, and a cavity 431 connected to the storage cavity 430, the colorant in the storage cavity 430 is output to the outside of the storage cavity 430 through the cavity 431, the first roller 410 is arranged on the cavity opening 431 and is located on the inner side of the storage cavity 430, and is in contact with the colorant in the storage cavity 430 to supply the colorant to the outer side of the cavity opening 431. The second roller 420 is arranged in the storage cavity 430 and is in contact with the first roller 410, and is used to transfer the colorant to the first roller 410. The first roller 410 abuts against the photosensitive layer 312 on the drum member 310, and is used to supply the colorant on its surface to the photosensitive layer 312. The charging member 320 abuts against the photosensitive layer 312 of the drum member 310, and is located upstream of the first roller 410 in the rotation direction of the drum member 310, so that the drum member 310 passes through the charging member 320 first and then passes through the first roller 410 when rotating. The charging member 320 is used to fill the charge on the photosensitive surface of the drum member 310. The optical scanning component 105 emits a light beam to the position between the charging member 320 and the first roller 410, so that the charge is converted into the required electrostatic latent image. The toner on the surface of the first roller 410 is transferred to the photosensitive layer 312 at the contact position with the drum member 310, and an image composed of the toner is formed under the attraction of the electric charge on the electrostatic latent image.

[0042] In addition, the developing box also includes a driving member 500, which is arranged on the first side of the box body 200, and includes a transmission gear group and a driving gear meshed with the transmission gear group. The driving gear is used to receive the driving force on the image forming device and transmit the driving force to the transmission gear group. Then the transmission gear group drives the drum 310, the first roller 410 and the second roller 420 to rotate to perform the imaging process.

[0043] In addition, the developing box also includes a detection member 600, see Figures 6 to 11The detection member 600 is disposed on the box body 200 and is located on one side of the box body 200, and includes an actuator 610 and a detected member 620 connected to the actuator 610. The actuator 610 is located at one end of the drum core 313 and can rotate synchronously with the drum member 310. The drum core 313 and the actuator 610 have a synchronous structure. The detected member 620 is close to one end of the drum core 313 and can move along a first direction. The first direction can be the axial direction of the drum core 313 or other directions, which are not limited here. The actuator 610 has a push surface 611 surrounding its rotation axis. The detected member 620 contacts the push surface 611. When the actuator 610 rotates synchronously with the drum core 313, the push surface 611 can push the detected member 620 to move along the first direction. Among them, the pushing surface 611 has a conductive part 612 that is conductive with the drum core 313. The conductive part 612 is made of copper, aluminum or other conductive materials, is located at one position of the abutting surface, and can pass through the detected part 620 when rotating around the axis. When the detected part 620 abuts against the position with the conductive part 612, the detected part 620 moves in the first direction to the detected position. At the detected position, the detected part 620 can be detected by the detection component on the image forming device, and the detection circuit is connected between the drum core 313, the conductive part 612 and the detected part 620.

[0044] In one embodiment of the present invention, referring to Figure 6 , the detection member 600 further includes a first electrical connector 630, the box body 200 is provided with an end cover 210, and the end cover 210 has a receiving portion 211, the receiving portion 211 can accommodate the end of the drum core 313, when one end of the drum core 313 is connected to the end cover 210, it can rotate relatively in the receiving portion 211, so that the end of the drum core 313 is rotatably arranged on the end cover 210, the first electrical connector 630 is located in the receiving portion 211 and has an extension portion 632 extending to the push surface 611 to form a conductive portion 612. Specifically, the first electrical connector 630 includes a conductive body 631, the extension portion 632 extends from the conductive body 631 in a direction perpendicular to the axis of the conductive body 631, and the conductive portion 612 is arranged at the distal end of the extension portion 632 away from the conductive body 631.

[0045] Furthermore, the actuator 610 has a connection groove 614 that is in communication with the receiving portion 211. The connection groove 614 is located at the inner side of the receiving portion 211 in the axial direction at the conductive part of the receiving portion 211. When the first electrical connector 630 is installed in the actuator 610, the extension portion 632 extends from the connection groove 614 to the outer side of the actuator 610 through the connection groove 614 and is located on the abutting surface. The conductive body 631 is located at the inner position of the actuator 610, and one end of the drum core 313 is connected to the actuator 610. Inside the actuator 610, the connection groove 614 is located at the innermost side of the actuator 610, so that the first electrical connector 630 is also located at the innermost side of the actuator 610 when installed in the actuator 610, and one end of the drum 310 is in the actuator 610, and the conductive body 631 of the first electrical connector 630 is fully in contact with the end surface of the end, so that the current can flow to the conductive part 612 through the conductive body 631, and when the conductive part 612 contacts the detected part 620, the current enters the detected part 620. Such a setting can effectively ensure the electrical contact between the first electrical connector 630 and the drum core 313, avoid poor contact, and at this position, it is not easily affected by the toner dropped on the photosensitive layer 312, ensuring the effective contact of the electrical connection structure between the actuator 610 and the drum 310.

[0046] See also Fig. 9 and Fig.10 The actuator 610 includes a rotating body 616 and an edge 617 surrounding the rotating body 616. The push surface 611 is arranged on the side of the edge 617 away from the drum 310. The actuator 610 is circular in the axial direction. The edge 617 is a circular ring structure. The detected member 620 is arranged on the side of the edge 617 away from the drum 310 and abuts against the push surface 611. The rotating body 616 has a receiving groove 613 on the side close to the drum 310 for receiving one end of the drum core 313. The conductive body 631 of the first electrical connector 630 is located at the innermost position of the receiving groove 613. The connecting groove 614 connects the receiving groove 613 and the receiving portion 211. The extension portion 632 extends from the receiving groove 613 through the connecting groove 614 to the receiving portion 211.

[0047] Among them, the synchronization structure is manifested between the actuator 610 and the drum core 313 as follows: a key recess 618 is provided in the accommodating groove 613, and a key component 330 that cooperates with the key recess 618 is provided on one end of the drum core 313. The key component 330 is embedded in one end. When the drum core 313 rotates, the key component 330 receives the rotational force from the drum core 313 and transmits the rotational force to the actuator 610 through the abutting surface with the key recess 618, thereby driving the actuator 610 to rotate synchronously.

[0048] Further reading Fig. 9When the push surface 611 extends in the circumferential direction around the rotating body 616, it moves toward the side gradually away from the drum core 313 in the axial direction. The detection component 600 also includes an elastic member 650 arranged in the end cover 210. The detected member 620 is pressed against the push surface 611 under the action of the elastic member 650. In this embodiment, the first direction is parallel to the axial direction, one end of the elastic member 650 abuts against the spring seat 216 in the storage portion 211 of the end cover 210, and the other end abuts against the detected member 620. The detected member 620 includes an abutting portion 621, an intermediate portion 622 and a conducting portion 623. The end of the abutting portion 621 abuts against the pushing surface 611, and the diameter of the intermediate portion 622 is larger than that of the abutting portion 621 and the conducting portion 623. The conducting portion 623 is used to conduct with an external detection component. The storage portion 211 has a guide track 212 abutting against the intermediate portion 622 of the detected member 620. The guide track 212 guides the first direction, so that the detected member 620 moves along the first direction when moving. The other end of the elastic member 650 abuts against the intermediate portion 622, and applies force to the detected member 620 through the intermediate portion 622.

[0049] Combined with reference Figure 8 The push surface 611 has a connecting section 615 at a position where the nearest end 611a and the farthest end 611b of the drum core 313 are connected in the axial direction. When the drum member 310 rotates to rotate the actuator 610, the push surface 611 drives the detection member to gradually move along the first direction, and when the detected member 620 approaches the position of the connecting section 615, the detected member 620 is detected by the detection component of the image forming device. Figures 2 to 7 Taking the embodiment shown in as an example, the push surface 611 on the upper surface of the actuator 610 is a spiral surface. When the detected member 620 abuts against the nearest end 611a of the push surface 611, the detected member 620 is farthest from the detection position, and as the drum member 310 rotates, the detected member 620 gradually abuts against the detection position along the push surface 611 until it is at the farthest end 611b. At this time, the detected member 620 is located at the detection position and is detected by the external detection component. After the drum member 310 continues to rotate, the detected member 620, under the action of the elastic member 650, abuts against the nearest end 611a from the farthest end 611b when passing through the connecting section 615. The drum member 310 completes a rotation cycle and sends a detection signal to the detection component via the conductive portion 612 and the detected member 620, so that the detection component counts.

[0050] In another embodiment of the present invention, the detection component 600 also includes a second electrical connector 640 arranged in the end cover 210. The second electrical connector 640 is located on the side of the detected component 620 away from the drum core 313 in the axial direction. The second electrical connector 640 is conductively connected to the detection component. When the detected component 620 is close to the connection end face, that is, abuts against the farthest end 611b, the detected component 620 abuts against the second electrical connector 640, and a detection signal is sent to the detection component.

[0051] The second electrical connector 640 is located in the first direction of the detected part 620. In the present embodiment, the drum core 313, the actuator 610, the detected part 620 and the second electrical connector 640 are arranged sequentially in the axial direction, so that the current starts from the drum core 313, passes through the actuator 610, the detected part 620 and the second electrical connector 640 and is received by the detection component.

[0052] See also Figure 5 and Figure 6 The end cover 210 includes a large diameter portion 213 and a small diameter portion 214, the small diameter portion 214 and the large diameter portion 213 are not on the same axis, the storage portion 211 is arranged on the large diameter portion 213 and its axis coincides with the axis of the large diameter portion 213, the small diameter portion 214 has a docking hole 215 for the detection probe 700 of the detection component to be connected, the second electrical connection member 640 extends from the large diameter portion 213 to the docking hole 215 of the small diameter portion 214, and can be engaged with the detection probe 700 connected to the docking hole 215. In the present embodiment, the second electrical connection component 640 is in the shape of an elongated strip, with the first end being located on the large diameter portion 213 and cooperating with the detected component 620, and the second end being located on the small diameter portion 214 and engaging with the detection probe 700. By cooperating between the large diameter portion 213 and the small diameter portion 214, the space utilization rate on the developing box can be effectively improved to avoid too many components being concentrated in one part thereof, and the docking hole 215 and the detection probe 700 are docked to ensure the stability of the electrical contact of the detection component of the image forming device on the developing box.

[0053] In another embodiment of the present invention, the box body 200 has a conductive member that is conductive to the external circuit on the other side away from the end cover 210, and the other end of the drum core 313 is electrically connected to the conductive member, so that the current flows from one end of the box body 200 to the other end, avoiding short circuits when the current input and output ends are arranged on the same side, thereby ensuring the safety of the development box.

[0054] Finally, it should be noted that the above description is only the best embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and simple replacements to the technical solution of the present invention by using the above disclosed practices and technical contents without departing from the scope of the technical solution of the present invention, which all belong to the scope of protection of the technical solution of the present invention.

Claims

1. A developing box for providing toner to an image forming device, characterized in that: include: Box body; A photosensitive member is arranged on the cartridge body, the photosensitive member comprises a drum member and a charging member attached to the surface of the drum member, the drum member comprises a cylindrical shell and a drum core passing through the axial center of the shell, the shell forms a photosensitive layer on its surface, the drum core is conductive but insulated from the shell, and the charging member is used to charge the photosensitive layer; A powder feeding member, provided on the box body, comprising a first roller and a storage cavity for storing toner, wherein the first roller is placed at the cavity opening of the storage cavity and abuts against the photosensitive layer; The detection member is arranged on the box body, and includes an actuator and a detected member connected to the actuator, wherein the actuator is located at one end of the drum core and can rotate together with the drum member, the detected member is close to the one end and can move along a first direction, and the actuator has a push surface surrounding its rotation axis, and the detected member contacts the push surface. The abutting surface has a conductive portion that is in electrical communication with the drum core, and the conductive portion is located at a position of the abutting surface. When the detected member is abutted at the position, the detected member moves in the first direction to be detected by the detection component on the image forming device. The detection member further comprises a first electrical connector, the box body is provided with an end cover, the end cover has a receiving portion capable of accommodating the drum core and the one end of the actuator, the first electrical connector is located in the actuator and has an extension portion extending to the push surface to form the conductive portion; The actuator has a connection groove that is in communication with the receiving portion, and when one end of the drum core is received in the receiving portion, the first electrical connector abuts against the one end in the axial direction and is located outside the one end; The actuator comprises a rotating body and an edge surrounding the rotating body, the push surface is arranged on a side of the edge away from the drum member, and when extending in a circumferential direction around the rotating body, gradually moves toward a side away from the drum core in the axial direction, the detection member further comprises an elastic member arranged in the end cover, and the detected member abuts against the push surface under the action of the elastic member; The push surface has a connecting section at a position where the nearest end and the farthest end of the drum core are connected in the axial direction. When the drum member rotates to rotate the actuator, the push surface drives the detected member to gradually move along the first direction, and when the detected member approaches the position of the connecting section, the detected member is detected by the detection component of the image forming device, and after the detected member continues to pass through the connecting section, the elastic member abuts against the nearest end again. The detection component further includes a second electrical connector disposed in the end cover, the second electrical connector being located on a side of the detected component away from the drum core in the axial direction, and the second electrical connector being in conduction with the detection component; When the detected component approaches the position of the connection section, the detected component abuts against the second electrical connector; The end cover includes a large diameter portion and a small diameter portion which is not on the same axis as the large diameter portion. The storage portion is arranged on the large diameter portion and its axis coincides with the axis of the large diameter portion. The small diameter portion has a docking hole for connecting a detection probe on the detection component. The second electrical connector extends from the large diameter portion to the docking hole of the small diameter portion and can be engaged with the detection probe connected to the docking hole.

2. The developing cartridge according to claim 1, characterized in that: The rotating body has a receiving groove for receiving one end of the drum core on a side close to the drum member.

3. The developing cartridge according to claim 2, characterized in that: A key recess is provided in the accommodating groove, and a key component matched with the key recess is provided on the one end of the drum core.

4. The developing cartridge according to claim 1, wherein: The box body has a conductive member connected to an external circuit on the other side away from the end cover, and the other end of the drum core is electrically connected to the conductive member.

5. An image forming device, characterized in that: The invention comprises a device body and a developing box as described in any one of claims 1 to 4, wherein the developing box is arranged in the device body.

Images