Developer storage box, developing device and image forming apparatus

Abstract

The present invention relates to the technical field of printing equipment, and provides a developer storage box, a developing device, and an image forming device, wherein the developer storage box is used to be assembled with a photosensitive component, and the developer storage box includes: a box body; a developing roller; a chip component, the chip component having an electrical connection end; and at least one action component, the action component including a first elastic component and a second elastic component, the first elastic component including a first action portion movably disposed on the box body and capable of moving relative to the box body along a first trajectory, and the second elastic component including a second action portion movably disposed on the first action portion and capable of moving relative to the first action portion along a second trajectory, wherein a support frame has a limiting structure, the limiting structure including a first limiting portion located on the first trajectory and a second limiting portion located on the second trajectory. The present invention can solve the problem of unstable information exchange between the chip and the internal part of the device in existing split-type developing devices.

Description

Technical Field

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

[0002] Printing equipment is a widely used machine in modern times. It is not only used in offices but is also becoming increasingly popular in home environments. Among them, laser printers are a commonly used printing method for printing equipment. After using laser to scan the developer cartridge, the photosensitive drum on the developer cartridge generates an electrostatic latent image, and under the powder feeding action of the developing roller, a developer image is formed on its surface. The developer image is transferred to the printing medium through the transfer component.

[0003] In the prior art, there is a developing box structure in which the drum assembly and the developing assembly are detachable and separable, and the drum assembly has a mounting bracket including a tightening component and a limiting portion. Figure 1 The tightening component and the limiting part are both located on the side of the mounting bracket away from the photosensitive drum. When the developing assembly is installed on the mounting bracket, the tightening component presses against the outer side of the developing assembly casing and applies force toward the photosensitive drum, so that the developing roller is pre-tightened and contacts the photosensitive drum, while the limiting part presses against the developing assembly casing to fix the casing relatively on the drum assembly.

[0004] However, in the printing device, the developer box also needs to be connected and controlled by the control system on the printing device body. Therefore, a chip component will be set on the developer box, but the chip component needs to be in elastic contact with the printing device body when the developer assembly is fixed relative to the drum assembly. However, this elastic contact will further apply force to the entire developer assembly through the chip component, causing a gap between the outer shell and the limiting component, and affecting the mutual contact between the developer roller and the photosensitive drum, resulting in looseness between the two, which may cause imaging defects or unclear images. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention aims to provide a developer storage box, a developing device and an image forming apparatus to solve the problem of unstable information exchange between the chip and the internal part of the apparatus in the existing split-type developing apparatus.

[0006] In a first aspect, the present invention provides a developer storage box for assembly with a photosensitive assembly, the photosensitive assembly comprising a frame and a photosensitive member rotatably disposed on the frame, the frame having a first opening facing a first direction and exposing the photosensitive member, and a support frame extending along the first direction, the developer storage box comprising:

[0007] a box body having a storage cavity for storing developer and a second opening communicating with the storage cavity;

[0008] a developing roller, disposed on the second opening;

[0009] a chip component disposed on an outer side wall of the box body, the chip component having an electrical connection end disposed in a second direction different from the first direction;

[0010] at least one acting member, the acting member including a first elastic component and a second elastic component, the first elastic component including a first acting portion movably provided on the box body and capable of moving relative to the box body along a first track, the second elastic component including a second acting portion movably provided on the first acting portion and capable of moving relative to the first acting portion along a second track,

[0011] In which, the support frame has a limiting structure. When the developer storage box is assembled on the support frame, one of the first acting part and the second acting part provides a first acting force under the action of the elastic member to make the developer storage box move toward the photosensitive component in the opposite direction of the first direction, and the other of the first acting part and the second acting part provides a second acting force under the elastic action to make the developer storage box move toward the second direction. The limiting structure includes a first limiting part located on the first track and a second limiting part located on the second track.

[0012] According to the developer storage box provided by the embodiment of the first aspect of the present invention, when the developer storage box is installed on the support frame, the action component provides an action force in the first direction so that the developing roller abuts the photosensitive component, and at the same time provides a second action force so that the developing box has a tendency to move in the second direction. Therefore, when the developing device is installed on the image forming device, the electrical connection end of the chip component and the electrical contact part inside the device are always in a pre-tightened contact state, which solves the problem of unstable electrical contact of the chip when it is fixed in the prior art, and facilitates the adaptation of the developer storage box to the fixed locking structure inside the device when the developing device is installed, preventing excessive rigid contact from causing difficulties in installing the developing device, and preventing the chip component from being misaligned during installation.

[0013] In a preferred embodiment of the present invention, a connecting protrusion is provided on the outer side wall of the box body, and the limiting structure includes a limiting recess adapted to the connecting protrusion;

[0014] When the developer storage cartridge is mounted on the supporting frame, the connecting projection is closer to the photosensitive member than to the acting member in the first direction.

[0015] In a preferred embodiment of the present invention, the first acting portion moves along a third direction under the first trajectory to provide the second acting force, and the second acting portion moves along the opposite direction of the first direction under the second trajectory to provide the first acting force, and the third direction is perpendicular to the first direction and biased towards the second direction.

[0016] In a preferred embodiment of the present invention, the chip component is in the third direction of the first action portion.

[0017] In a second aspect, the present invention further provides a developing device, comprising:

[0018] A photosensitive assembly, comprising a frame and a photosensitive member rotatably disposed on the frame, wherein the frame has a first opening facing a first direction and exposing the photosensitive member, and a support frame extending along the first direction;

[0019] Developer storage box, including:

[0020] a box body having a storage cavity for storing developer and a second opening communicating with the storage cavity;

[0021] a developing roller, disposed on the second opening;

[0022] a chip component disposed on an outer side wall of the box body, the chip component having an electrical connection end disposed in a second direction different from the first direction;

[0023] at least one acting member, the acting member including a first elastic component and a second elastic component, the first elastic component including a first acting portion movably provided on the box body and capable of moving relative to the box body along a first track, the second elastic component including a second acting portion movably provided on the first acting portion and capable of moving relative to the first acting portion along a second track,

[0024] In which, the support frame has a limiting structure. When the developer storage box is assembled on the support frame, one of the first acting part and the second acting part provides a first acting force under the action of the elastic member to make the developer storage box move toward the photosensitive component in the opposite direction of the first direction, and the other of the first acting part and the second acting part provides a second acting force under the elastic action to make the developer storage box move toward the second direction. The limiting structure includes a first limiting part located on the first track and a second limiting part located on the second track.

[0025] The developing device provided in accordance with the embodiment of the second aspect of the present invention solves the problem in the prior art that the electrical contact of the chip is unstable when it is fixed, and facilitates the adaptation of the developer storage box to the fixed positioning structure inside the device when the developing device is installed, preventing excessive rigid contact from causing difficulties in the installation of the developing device, and preventing the chip components from being misaligned during installation.

[0026] In a preferred embodiment of the present invention, a connecting protrusion is provided on the outer side wall of the box body, and the limiting structure includes a limiting recess adapted to the connecting protrusion;

[0027] When the developer storage cartridge is mounted on the supporting frame, the connecting projection is closer to the photosensitive member than to the acting member in the first direction.

[0028] In a preferred embodiment of the present invention, the limiting recess includes a first limiting surface and a second limiting surface, the first limiting surface is located in a first direction of the connecting protrusion, and the second limiting surface is located in a third direction of the connecting protrusion.

[0029] In a preferred embodiment of the present invention, the connecting protrusions are distributed on both sides of the box body along the axial direction of the developing roller, and are both located on the axis of the developing roller.

[0030] In a preferred embodiment of the present invention, the box body has a fastener located in the first direction of the connecting protrusion, and the support frame has a fastening portion adapted to the fastener.

[0031] In a third aspect, the present invention further provides an image forming apparatus, comprising an apparatus body and a developing device as described in the embodiment of the first aspect and mounted on the apparatus body.

[0032] Other features and advantages of the invention will be described in the following description and, in part, will become apparent from the description or be understood through implementation of the technical solutions of the invention. The objectives and other advantages of the invention can be achieved and obtained through the structures and / or processes particularly pointed out in the description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a developing cartridge in the prior art;

[0034] Figure 2 A schematic structural diagram of an image forming device provided by an embodiment of the present invention;

[0035] Figure 3 A schematic structural diagram of a developing device provided by an embodiment of the present invention from a first perspective;

[0036] Figure 4 A schematic structural diagram of a developing device provided by an embodiment of the present invention from a second viewing angle;

[0037] Figure 5 A schematic structural diagram of a developer storage box from a first perspective according to an embodiment of the present invention;

[0038] Figure 6A schematic diagram of the internal structure of a developer storage box provided by an embodiment of the present invention;

[0039] Figure 7 A schematic structural diagram of a developer storage box from a second perspective according to an embodiment of the present invention;

[0040] Figure 8 for Figure 7 A partial enlarged schematic diagram of point A in the middle;

[0041] Figure 9 A schematic structural diagram of a developer storage box provided by an embodiment of the present invention being assembled on a photosensitive component from a first viewing angle;

[0042] Figure 10 A schematic structural diagram of a developer storage box provided by an embodiment of the present invention assembled on a photosensitive component from a second viewing angle;

[0043] Figure 11 for Figure 10 A partial enlarged schematic diagram of point B in the middle;

[0044] Figure 12 This is a schematic structural diagram of the developing roller, photosensitive member and acting member provided in an embodiment of the present invention.

[0045] Description of Figure Numbers:

[0046] 1 device body, 11 paper box, 12 pickup assembly, 13 conveying assembly, 14 transfer assembly, 15 developing device, 16 scanning assembly, 17 fixing assembly, 18 paper discharge assembly;

[0047] 21 drum assembly, 22 photosensitive drum, 23 developing assembly, 24 snap fastener, 25 elastic pressing member, 26 mounting frame;

[0048] 100 frame, 110 photosensitive member, 120 main body, 121 first opening, 130 support frame, 131 first limiting portion, 132 second limiting portion, 133 limiting recess, 1331 first limiting surface, 1332 second limiting surface, 134 mounting notch, 135 buckling portion, 140 charging roller;

[0049] 200 box body, 201 storage chamber, 202 powder feeding channel, 210 developing roller, 220 chip member, 221 electrical connection end, 230 second opening, 240 stirring member, 250 powder feeding roller, 260 action member, 261 first action portion, 2611 connection portion, 2611a guide block, 2612 action portion, 2612a connection groove, 2612b second guide hole, 262 second action portion, 2621 abutment portion, 2622 guide portion, 263 first spring, 264 second spring, 270 connection protrusion, 280 fastener, 290 movable groove, 291 first guide hole;

[0050] 311 is the first gear, 312 is the second gear, 313 is the third gear, 314 is the fourth gear, 315 is the fifth gear, and 316 is the power receiving gear. DETAILED DESCRIPTION

[0051] The following will describe the implementation methods of the present invention in detail with reference to the accompanying drawings and examples, 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, and are not 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 merely 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 of 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 scope of protection of the present invention.

[0052] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments.

[0053] First, the shortcomings of the embodiment of the present invention are described. Figure 1 The drum assembly 21 has a longer service life than the developing assembly 23. Therefore, the developing assembly 23 is replaced more frequently during the life cycle of the entire image forming apparatus. Therefore, a split developing cartridge structure is provided. The existing split developing cartridge structure is as follows. Figure 1 As shown, the drum assembly 21 has a mounting frame 26 for mounting the developing assembly 23, and the photosensitive drum 22 is arranged at a position close to the mounting frame 26 so that the developing roller 210 contacts the photosensitive drum 22 when the developing assembly 23 is mounted on the mounting frame 26. The mounting frame 26 has a buckle 24, and an elastic pressing component 25 is provided at the end of the mounting frame 26 away from the photosensitive drum 22. The buckle 24 is used to buckle the developing assembly 23 to the mounting frame 26, and the elastic pressing component 25 presses against the back side of the developing assembly 23 facing away from the photosensitive drum 22, thereby causing the developing roller 210 to elastically contact the photosensitive drum 22 with a certain pre-tightening force.

[0054] However, this structure may have assembly defects during use. For example, when the chip is assembled on the developing component 23 and contacts the external electrical connection part, the electrical connection part usually applies pressure on the chip through elastic pressure, and the chip further transmits the force to the entire developing component 23. As a result, the developing component 23 will generate an offset force during assembly, resulting in a gap between the outer shell of the developing component 23 and the buckle 24, making it easy for the developing roller 210 assembly and the drum assembly 21 to loosen. For example, when the image forming device vibrates slightly during printing, the vibration may cause the chip component 220 to be in an intermittent connection state with the electrical connection part, or cause the contact surface between the developing roller 210 and the photosensitive drum 22 to be misaligned, affecting the imaging process. At the same time, the elastic pressure of the electrical connection part under this structure will also weaken the pressing force of the elastic pressing component 25, which may easily lead to difficulties in the parameter design of the entire developing box, especially the pre-tightening force limit of the developing roller 210 on the photosensitive drum 22. If the pre-tightening force is too large, the developer layer received by the photosensitive drum 22 may be too thin during imaging, resulting in light imaging color or even image loss. If the pre-tightening force is too small, the developing roller 210 and the photosensitive drum 22 may not be able to maintain sufficient contact, which may cause uneven developer delivery between the photosensitive drum 22 and the developing roller 210, and may result in defects such as too dark image color or even local color blocks.

[0055] Based on this, an embodiment of the present invention provides an image forming device, referring to Figure 2 , including a device body 1 and a paper box 11, a pickup assembly 12, a conveying assembly 13, a transfer assembly 14, a developing device 15, a scanning assembly 16, a fixing assembly 17 and a paper discharge assembly 18 arranged in the device body 1. A paper conveying path is provided in the device body 1. Paper for printing is stacked and stored in the paper box 11. The pickup assembly 12 includes a pickup roller, which contacts the stacked paper and feeds the paper into the paper conveying path. The conveying assembly 13 includes a correction roller and a paper feed roller. The correction roller is used to correct the position of the paper in the paper conveying path. The paper feed roller is used to transport the paper in the paper conveying path. The developing device 15 forms an image composed of a developer in its interior and transfers the image to the transfer assembly 14. The transfer assembly 14 transfers the image in the paper conveying path. After acquiring the image, the paper is further conveyed to the fixing assembly 17. The fixing assembly 17 fixes the image on the surface of the paper by heating. The paper after printing is finally discharged to the outside of the device body 1 by the paper discharge assembly 18.

[0056] The scanning assembly 16 includes a laser emitting unit and an optical member for deflecting the laser light emitted by the laser emitting unit. The optical member may be composed of multiple optical components. The laser light is deflected toward the developing device 15 for use in the imaging process of the developing device 15. The developing device 15 includes a photosensitive assembly having a photosensitive member 110 including a photosensitive surface. The laser light is deflected onto the photosensitive surface to form an electrostatic latent image, which is then used to form an image in the developer.

[0057] See Figures 3 to 12 In the embodiment of the present invention, the developing device includes a photosensitive component 110 and a developer storage box. The photosensitive component includes a frame 100 and a photosensitive component 110 rotatably mounted on the frame 100. The photosensitive component 110 is rotatably mounted on the frame 100. A photosensitive layer made of a photosensitive material is provided on its surface. After receiving the emitted light from the scanning component 16, the photosensitive layer converts the original negative charge it carries into a positive charge, thereby realizing the formation of an electrostatic latent image. The frame 100 includes a main body 120 and a support frame 130 connected to the main body 120. The support frame 130 can be assembled to the main body 120 in a detachable manner such as a snap, or can be integrally formed with the main body 120 or a part of the main body 120, wherein the main body 120 has a first direction (such as Figure 4 and Figure 12 The photosensitive member 110 is rotatably connected to the main body 120 and is located on the first opening 121, so that the photosensitive member 110 is exposed in the first opening 121. The main body 120 is provided with a first driving gear set for driving the photosensitive member 110. The support frame 130 is located outside the first opening 121 and extends along the first direction. A mounting position for mounting a developer storage box is formed between the support frame 130 and the main body 120, and the support frame 130 supports the developer storage box.

[0058] The developer storage box includes a box body 200, a developing roller 210, and a chip component 220. The box body 200 has a storage cavity 201 for storing developer and a second opening 230 connected to the storage cavity 201. The developing roller 210 is arranged on the second opening 230 and has a transmission portion protruding from the outside of the second opening 230. The transmission portion is used to transport the developer to the photosensitive component 110 in a contact manner when the developer storage box is assembled with the photosensitive component. The chip component 220 is arranged on the outer wall of the box body 200 and has an electrical connection end 221 arranged in the second direction. The second direction is as shown in FIG. Figure 4 The Z direction in the diagram is different from the first direction and intersects or is not in the same plane with the first direction in space. In this embodiment, the electrical connection end 221 is biased towards the direction away from the support frame 130. Under such a structure, the electrical connection part on the device body applies pressure to the support frame 130 while the support frame 130 provides supporting force.

[0059] See Figure 6 The developer storage box also includes a stirring member 240 and a powder feeding roller 250. A powder feeding channel 202 is provided between the storage chamber 201 and the second opening 230. The powder feeding roller 250 is arranged in the powder feeding channel 202 and contacts the developing roller 210. The stirring member 240 includes a stirring rod rotatably arranged in the storage chamber 201 and a stirring blade arranged on the stirring rod. The stirring blade stirs the developer in the storage chamber 201 under the rotation of the stirring rod, and pushes the developer to the powder feeding channel 202 and transports it to the powder feeding roller 250. The powder feeding roller 250 further transports the developer to the adjacent developing roller 210. The rotation axes of the developing roller 210, the powder feeding roller 250 and the stirring rod in the box body 200 are parallel. When the developer storage box is installed on the photosensitive component, the photosensitive component 110 is parallel to the axis of the developing roller 210, so that the developing roller 210 contacts the surface of the photosensitive component 110 along the axial direction.

[0060] Furthermore, the developer storage cartridge also includes at least one acting member 260, which is used to apply an acting force to the cartridge body 200 to ensure that the developing roller 210 is in full contact with the photosensitive member 110, and that the chip member 220 maintains stable electrical contact with an external electrical connection portion. Specifically, the acting member 260 includes a first elastic component and a second elastic component. The first elastic component includes a first acting portion 261 movably disposed on the cartridge body 200 and capable of moving relative to the cartridge body 200 along a first trajectory. The second elastic component includes a second acting portion 262 movably disposed on the first acting portion 261 and capable of moving relative to the first acting portion 261 along a second trajectory. With this arrangement, the acting member 260 exerts a force in two directions. In conjunction with this, the support frame 130 has a limiting structure. Specifically, when the developer storage box is assembled on the support frame 130, one of the first acting portion 261 and the second acting portion 262 provides a first acting force under elastic action, so that the developer storage box moves toward the photosensitive member 110 in the opposite direction of the first direction, so that the transmission part of the developing roller 210 elastically contacts the surface position of the photosensitive member 110 with a certain pre-tightening force, and the other of the first acting portion 261 and the second acting portion 262 provides a second acting force under elastic action, and the second acting force can cause the developer storage box to move in the second direction. The limiting structure includes a first limiting portion 131 located on the first track and a first limiting portion 131 located on the second track. When the two limiting portions cooperate with the two acting portions, they provide supporting force to the two acting portions to form the first force and the second force.

[0061] According to the structural design of the two acting parts, compared with the tightening force and the fastening method of the buckle 24 in the prior art, when the buckle 24 fixes the developing assembly 23 on the mounting frame 26 of the drum assembly 21, the chip is fixedly arranged relative to the mounting frame 26, and the elasticity of the electrical connection part will act on the developing assembly 23, causing the developing assembly 23 to warp and deviate or generate a gap between it and the photosensitive drum 22. If the fastening force is relatively large, the buckle 24 will generate friction at the contact parts when fastening the developing assembly 23 to the drum assembly 21. The friction force will offset the tightening force of the tightening component, so that the contact between the developing roller 210 and the photosensitive drum 22 is not tight. The structural design in this embodiment can provide a first force and a second force, and the direction of the second force is different from that of the first force, which will not affect or have less influence on the first force giving the developing roller 210 a tightening force on the photosensitive member 110. At the same time, when the chip is under the action of the second force, the developing assembly 23 can be elastically displaced relative to the supporting frame 130 when assembled on the supporting frame 130, thereby ensuring that the chip and the external electrical connection parts are always in an effective contact state, and there will be no problem of loose contact due to installation misalignment or error, so that real-time electrical signal exchange can be achieved between the developing device and the equipment body.

[0062] In this embodiment, the second acting portion 262 is movably arranged on the first acting portion 261, so that the acting component 260 can provide two acting forces while ensuring the compactness of the acting force and the structure. In particular, when the two acting portions 2612 are openly arranged on the box body 200, there will be a misalignment phenomenon of the two acting portions in different directions. For example, when the first acting portion 261 provides the second acting force and the first acting portion 261 provides the first acting force, if the first acting portion 261 is pressed against one part of the support frame 130 and the second acting portion 262 is pressed against another part of the support frame 130 that is different from the first part, when the developing device is assembled on the first acting portion 261, the first acting portion 261 will cause the box body 200 to elastically deflect in the second direction due to the electrical contact between the chip component 220 and the external electrical connection part. At this time, the second acting portion 262 may be separated from another part of the original support frame 130, resulting in a deviation in the direction of force application, which in turn causes misalignment between the developing roller 210 and the photosensitive member 110, or the direction of the elastic force application is not the original setting direction. This structure may cause misalignment between the first acting part 261 and the second acting part 262 when the developing device is used in the device body for a long time, which may cause imaging defects. Integrating the two acting parts on the acting member 260 can significantly solve this problem. Specifically, when the first acting part 261 moves along the first direction, the second acting part 262 moves with the position of the first acting part 261, and can always provide the first acting force on the first acting part 261 to further act on the box body 200, and its force application direction will not be offset. Specifically, Figure 3 As an example of the embodiment shown in FIG, the first action portion 261 is limited to the action direction of the third direction (eg Figure 4 and Figure 12 At the same time, one of the acting parts 261 and the first limiting part 131 is provided. At this time, the first acting part 261 is relatively fixed to the first limiting part 131, and because the second acting part 262 is provided on the first acting part 261, the second acting part 262 is also fixed relative to the second limiting part. No matter what kind of deviation occurs to the box body 200 under external action, it will not affect the effects of the two acting parts. The first and second acting forces are stably provided, thereby solving the problem of interference between the two forces when they are at different positions of the box body 200.

[0063] In one embodiment, a connecting protrusion 270 is provided on the outer wall of the cartridge body 200, and a limiting member includes a limiting recess 133 that matches the connecting protrusion 270. When the developer storage cartridge is assembled on the support frame 130, the connecting protrusion 270 is closer to the photosensitive member 110 than the action member 260 in a first direction. The cooperation between the connecting protrusion 270 and the limiting recess 133 is used to define the contact direction of the developing roller 210 with the photosensitive member 110. The action member 260 applies force toward the photosensitive member 110 on the side of the connecting protrusion 270 away from the developing roller 210. The limiting recess 133 can correct the direction of the force application, so that the developing roller 210 is pressed against the photosensitive member 110 in an elastic contact manner. The limiting recess 133 also serves to limit the position of the developer storage cartridge when it is assembled on the support frame 130, ensuring a compact installation position.

[0064] Specifically, see Figure 4 and Figure 10 The support frame 130 has an installation notch 134 that is open toward the second direction and the first direction. The limiting recess 133 is located at the inner side of the installation notch 134. The connecting protrusion 270 enters from the installation notch 134 and engages with the limiting recess 133. The limiting recess 133 includes a first limiting surface 1331 and a second limiting surface 1332. The first limiting surface 1331 is located in the opposite direction of the first direction of the connecting protrusion 270, and the second limiting surface 1332 is located in the third direction of the connecting protrusion 270, so that when the developer storage box is installed on the support frame 130, the first limiting surface 1331 and the second limiting surface 1332 cooperate with the first acting portion 261 and the second acting portion 262 to fix the developer storage box relative to the photosensitive component. However, when the developing device is assembled in the main body of the equipment, due to the elastic contact between the developing roller 210 and the photosensitive member 110, the connecting protrusion 270 may not necessarily contact the first limiting surface 1331, and there may be a gap to avoid affecting the elastic contact of the developing roller 210. The second limiting surface 1332 can contact the connecting protrusion 270 in the third direction to limit the pressing direction of the developing roller 210 against the photosensitive member 110.

[0065] Furthermore, the box body 200 has a fastener 280 located in the first direction of the connecting protrusion 270, and the support frame 130 has a fastening portion 135 adapted to the fastener 280. The fastener 280 may include a buckle block elastically rotatably arranged on the outer wall of the box body 200. The elastic setting method can be realized by a torsion spring structure, and the fastening portion 135 is located in the third direction of the support frame 130, which is used to limit the movement of the developer storage box in the third direction, so that the developer storage box is fixed relative to the photosensitive member 110 when assembled on the support frame 130. Of course, under the action of the fastener 280 and the fastening portion 135, the developer storage box still has a movable space in the third direction or any direction biased towards the second direction, and the movable space is elastically pressed by the first acting portion 261 or the second acting portion 262 in the acting member 260, so that the chip member 220 maintains elastic contact with the electrical connection part when the developing device is installed in the device body.

[0066] In one embodiment, the first acting portion 261 moves along a third direction under the first trajectory to provide the second acting force, and the second acting portion 262 moves along the opposite direction of the first direction under the second trajectory to provide the first acting force, and the third direction is perpendicular to the first direction and biased toward the second direction. Figure 8 As shown, the box body 200 has a movable groove 290 arranged in a third direction, and a first guide hole 291 along the third direction is provided on the outer wall of the movable groove 290. The first acting portion 261 has a connecting portion 2611 and an acting portion 2612. The connecting portion 2611 is embedded in the movable groove 290 to move along the first track in the movable groove 290, and has a guide block 2611a that is snapped into the first guide hole 291. The guide block 2611a guides and limits the first acting portion 261 to prevent the first acting portion 261 from leaving the movable groove 290. The acting portion 2612 has a connecting groove 2612a extending in the first direction. The second acting portion 262 is inserted into the connecting groove 2612a and has an abutting portion 2621 protruding from the connecting groove 2612a. The abutting portion 2621 is configured to contact the second stopper. The connecting groove 2612a has a second guide hole 2612b extending in the first direction. The second acting portion 262 has a guide portion 2622 that engages the second guide hole 2612b. In this manner, the second acting portion 262 is movably disposed on the acting portion 2612 and moves relative to the first acting portion 261 along a second trajectory. In this embodiment, when the developer storage cartridge is mounted on the photosensitive member 110, the first trajectory is parallel to the third direction, and the second trajectory is perpendicular to the first direction. As a result, the first acting portion 261 and the second acting portion 262 generate forces in the third direction and in directions opposite to the first direction, respectively.

[0067] Specifically, a first spring 263 and a second spring 264 are respectively provided in the movable groove 290 and the connecting groove 2612a, the first spring 263 is used to form a second force on the first acting portion 261, and the second spring 264 is used to form a first force on the second acting portion 262, wherein the third force is along the third direction, so that the second force is biased toward the second direction and has a component force biased toward the second direction, thereby providing an elastic support effect on the chip.

[0068] Under this structure, since the elastic force direction of the second acting portion 262 is the same as the opposite direction of the first direction, the elastic force direction of the second acting portion 262 is the same as the third direction, and the third direction is perpendicular to the first direction, the force in the third direction will not affect the force effect in the opposite direction of the first direction. Specifically, the second force in the third direction will not have a component force in the opposite direction of the first direction, thereby not weakening the effect of the first force. Moreover, since the second acting portion 262 is directly movably arranged on the first acting portion 261, the two are integrated in an acting member 260, and the direction of interaction between the two will not change due to the offset of the box body 200. Therefore, there will be no mutual influence between the two due to the movement of the box body 200 in the third direction. For example, when the first force acts on the developing roller 210, it will not be affected by the second force, thereby ensuring that the pressure of the developing roller 210 elastically pressing on the photosensitive member 110 is in an appropriate state. With this structure, even if the chip component 220 is pressed by the electrical connection portion and the developer storage box moves in the third direction, it will not affect the first force.

[0069] More specifically, in order to better adapt to the above structure, the connecting protrusions 270 in the above embodiment are distributed on both sides of the box body 200 along the axial direction of the developing roller 210, and are both located on the axis of the developing roller 210. Under this structure, when the chip component 220 is assembled with the electrical connection part and a short distance displacement occurs, the limiting protrusions act to connect the protrusions 270 (such as Figure 4 and Figure 12 The axis P in the figure is used as the rotation center to slightly deflect in the third direction (the deflection direction is as follows Figure 12 direction W in the Figure 2 , the rotation axis will not move, and thus the position of the developing roller 210 will not shift, thereby ensuring the contact stability of the developing roller 210 relative to the photosensitive member 110, and will not affect the first force and stably apply force to the developing roller 210.

[0070] Continue reading Figure 8A guiding slope is provided on one side of the action part 2612 close to the abutting part 2621, and an extension slope parallel to the guiding slope is provided on the abutting part 2621. When the developer storage box is assembled on the support frame 130, the guiding slope and the extension slope first contact with the second limiting part and move downward along the wall surface of the second limiting part. During the gradual movement, the abutting part is compressed by the second limiting part into the first action part 261 until the first action part 261 is limited by the first limiting part 131, so that the two action parts produce a tightening effect, and finally the developer storage box is assembled on the photosensitive member 110 through the cooperation of the fastener 280 and the fastening part 135.

[0071] In another embodiment, the first acting portion 261 moves along the opposite direction of the first direction under the first trajectory to provide a first acting force, and the second acting portion 262 moves along the third direction under the second trajectory to provide a second acting force. The third direction is perpendicular to the first direction and biased toward the second direction. It is also within the scope of implementation of the present invention and is integrated on the same acting component 260 to have basically the same effect as the aforementioned embodiment, so no further details will be given here.

[0072] In this embodiment, the developer storage box includes two acting members 260, which are respectively arranged on both sides of the box body 200 in the axial direction and located on the bottom side of the box body 200 (that is, located close to the support part). The two acting members 260 are arranged along the axial direction and are used to provide a stable first acting force and a second acting force on both sides to ensure the stability of the box body 200 on the support frame 130.

[0073] Also, see Figure 12 The photosensitive component also has a charging roller 140, and the developer storage box has a second driving gear set. The charging roller 140 contacts the surface of the photosensitive member 110 and is used to impart charge to the photosensitive member 110. The gears on the first driving gear set are engaged with each other, including a first gear 311 for driving the photosensitive member 110 and a second gear 312 for driving the charging roller 140. The second driving gear set includes a power receiving gear, a third gear 313 for driving the developing roller 210, a fourth gear 314 for driving the powder feeding roller 250 and a fifth gear 315 for driving the stirring frame. When the developer storage box is assembled on the photosensitive component, the first driving gear set is engaged with the second driving gear set, and the power receiving gear is connected to the driving component in the device body to receive external driving force, thereby driving the various gears in the first driving gear and the second driving gear to rotate, thereby driving the various components in the entire developing device to rotate.

[0074] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Anyone skilled in the art can utilize the above-disclosed practices and technical content to make numerous possible variations and simple substitutions to the present invention without departing from the scope of the present invention, and all such variations and substitutions are within the scope of protection of the present invention.

Claims

1. A developer storage box for assembly with a photosensitive component, the photosensitive component comprising a frame and a photosensitive member rotatably disposed on the frame, the frame having a first opening facing a first direction and exposing the photosensitive member, and a support frame extending along the first direction, characterized in that: The developer storage box includes: a box body having a storage cavity for storing developer and a second opening communicating with the storage cavity; a developing roller, disposed on the second opening; a chip component, disposed on an outer side wall of the box body, the chip component having an electrical connection end disposed in a second direction different from the first direction; at least one acting member, the acting member including a first elastic component and a second elastic component, the first elastic component including a first acting portion movably provided on the box body and capable of moving relative to the box body along a first track, the second elastic component including a second acting portion movably provided on the first acting portion and capable of moving relative to the first acting portion along a second track, In which, the support frame has a limiting structure. When the developer storage box is assembled on the support frame, one of the first acting part and the second acting part provides a first acting force under the action of the elastic member to make the developer storage box move toward the photosensitive component in the opposite direction of the first direction, and the other of the first acting part and the second acting part provides a second acting force under the elastic action to make the developer storage box move toward the second direction. The limiting structure includes a first limiting part located on the first track and a second limiting part located on the second track.

2. The developer storage box according to claim 1, characterized in that A connecting protrusion is provided on the outer side wall of the box body, and the limiting structure includes a limiting concave portion adapted to the connecting protrusion; When the developer storage cartridge is mounted on the supporting frame, the connecting projection is closer to the photosensitive member than to the acting member in the first direction.

3. The developer storage box according to claim 1, wherein The first acting portion moves along a third direction under the first trajectory to provide the second acting force, and the second acting portion moves along a direction opposite to the first direction under the second trajectory to provide the first acting force. The third direction is perpendicular to the first direction and biased toward the second direction.

4. The developer storage box according to claim 2, characterized in that The chip component is in the third direction of the first action portion.

5. A developing device, characterized in that: include: A photosensitive assembly, comprising a frame and a photosensitive member rotatably disposed on the frame, wherein the frame has a first opening facing a first direction and exposing the photosensitive member, and a support frame extending along the first direction; Developer storage box, including: a box body having a storage cavity for storing developer and a second opening communicating with the storage cavity; a developing roller, disposed on the second opening; a chip component, disposed on an outer side wall of the box body, the chip component having an electrical connection end disposed in a second direction different from the first direction; at least one acting member, the acting member including a first elastic component and a second elastic component, the first elastic component including a first acting portion movably provided on the box body and capable of moving relative to the box body along a first track, the second elastic component including a second acting portion movably provided on the first acting portion and capable of moving relative to the first acting portion along a second track, In which, the support frame has a limiting structure. When the developer storage box is assembled on the support frame, one of the first acting part and the second acting part provides a first acting force under the action of the elastic member to make the developer storage box move toward the photosensitive component in the opposite direction of the first direction, and the other of the first acting part and the second acting part provides a second acting force under the elastic action to make the developer storage box move toward the second direction. The limiting structure includes a first limiting part located on the first track and a second limiting part located on the second track.

6. The developing device according to claim 5, wherein: A connecting protrusion is provided on the outer side wall of the box body, and the limiting structure includes a limiting concave portion adapted to the connecting protrusion; When the developer storage cartridge is mounted on the supporting frame, the connecting projection is closer to the photosensitive member than to the acting member in the first direction.

7. The developing device according to claim 6, wherein: The limiting recess includes a first limiting surface and a second limiting surface, the first limiting surface is located in a first direction of the connecting protrusion, and the second limiting surface is located in a third direction of the connecting protrusion.

8. The developing device according to claim 6, wherein: The connecting protrusions are distributed on both sides of the box body along the axial direction of the developing roller and are both located on the axis of the developing roller.

9. The developing device according to claim 6, wherein: The box body has a fastener located in the first direction of the connecting protrusion, and the support frame has a fastening portion adapted to the fastener.

10. An image forming apparatus, characterized in that: The device comprises an apparatus body and a developing device according to any one of claims 5 to 9 mounted on the apparatus body.

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