A toner cartridge

Abstract

A toner cartridge includes a cartridge body, a toner delivery roller, a developing roller, a photosensitive drum, and a charging roller. It also includes a side cover and a first conductive elastic element. The side cover is connected to one side of the cartridge body. Four conductive dielectric injection-molded layers—a first, a second, a third, and a fourth—are spaced apart and formed in a two-stage injection molding process. The first conductive elastic element connects the inner end of the first conductive dielectric injection-molded layer to the toner delivery roller. The inner end of the second conductive dielectric injection-molded layer is electrically connected to the developing roller. The inner end of the third conductive dielectric injection-molded layer is electrically connected to the photosensitive drum. The inner end of the fourth conductive dielectric injection-molded layer is electrically connected to the charging roller. The toner cartridge provided by this invention features an ingenious structural design. Through the conductive dielectric injection-molded layers and elastic electrical connections, deformation of the conductive steel sheet is avoided. Furthermore, the installation process is simple, and the electrical connection stability is high, ensuring the printing quality of the toner cartridge.

Description

Technical Field

[0001] This invention relates to the field of printing consumables technology, and in particular to a toner cartridge. Background Technology

[0002] When the toner cartridge is working, it needs to receive electrical energy from the outside to form an electrostatic field between the developing element and the photosensitive element. Therefore, the toner cartridge has a conductive terminal for receiving electrical energy.

[0003] Specifically, the conductive end of the existing toner cartridge includes four conductive steel plates for connecting with the conductive output section inside the device. Two of the conductive steel plates are fixedly installed at intervals on one side end cover of the toner cartridge body. The two ends of the first conductive steel plate are electrically connected to the end of the toner feeding roller shaft and the first conductive output section inside the device, respectively. The two ends of the second conductive steel plate are electrically connected to the end of the developing roller shaft and the second conductive output section inside the device, respectively. The two ends of the third conductive steel plate are electrically connected to the end of the photosensitive drum core shaft and the second conductive output section inside the device, respectively. The two ends of the fourth conductive steel plate are electrically connected to the end of the charging roller shaft and the second conductive output section inside the device, respectively.

[0004] As can be seen from the above, the existing toner cartridges have the following technical defects: the four different conductive steel sheets mentioned above need to be manufactured and transported separately. During installation, the conductive steel sheets are bent and installed on the side end face of the toner cartridge body, and the conductive steel sheets are exposed on the side end face of the toner cartridge body. During the above installation process, the conductive steel sheets need to be installed independently, and the positioning accuracy of the conductive steel sheets on the side end face of the toner cartridge body is required to be high. If there is a slight deviation in position, the electrical connection cannot be achieved, resulting in the toner cartridge not working properly. The installation process is complicated, and the operation is even more complicated. In addition, the conductive steel sheets are easily displaced, damaged, and deformed because they are exposed. The conductive steel sheets are rigidly electrically connected to the toner delivery roller shaft, etc., which makes the electrical connection very unstable. Summary of the Invention

[0005] The purpose of this invention is to provide a toner cartridge that solves the technical problems of complex installation process, easy deformation, and poor electrical connection stability of the conductive steel sheet in existing toner cartridges. This toner cartridge has an ingenious structural design. Through the setting of conductive medium injection molding layer and elastic electrical connection, the deformation of conductive steel sheet is avoided. Moreover, the installation process is simple and the electrical connection is highly stable, thus ensuring the printing quality of the toner cartridge.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A toner cartridge includes a cartridge body, a toner delivery roller, a developing roller, a photosensitive drum, and a charging roller. The toner cartridge also includes a side cover connected to one side of the cartridge body, with a first conductive dielectric injection molding layer, a second conductive dielectric injection molding layer, a third conductive dielectric injection molding layer, and a fourth conductive dielectric injection molding layer formed by secondary injection molding spaced apart. A first conductive elastic element is connected to the inner end of the first conductive dielectric injection molding layer and the toner delivery roller. The inner end of the second conductive dielectric injection molding layer is electrically connected to the developing roller. The inner end of the third conductive dielectric injection molding layer is electrically connected to the photosensitive drum. The inner end of the fourth conductive dielectric injection molding layer is electrically connected to the charging roller.

[0008] Furthermore, the toner cartridge also includes a second conductive elastic element, which is connected to the inner end of the second conductive dielectric injection layer and the roller shaft of the developing roller.

[0009] Furthermore, the first conductive elastic element and / or the second conductive elastic element are configured as an elastic structure comprising at least two ends of a small diameter and a middle section of a large diameter.

[0010] Furthermore, the toner cartridge also includes a fixed side cover, which is sandwiched between the side cover and one side of the cartridge body. The middle section of the larger diameter of the first conductive elastic element and / or the second conductive elastic element is installed in the fixed side cover, and the two ends of the smaller diameter are respectively located on both sides of the fixed side cover.

[0011] Furthermore, the first conductive elastic element and / or the second conductive elastic element are configured as conical springs comprising at least the two ends of the minor diameter and the middle section of the major diameter.

[0012] Furthermore, the first conductive dielectric injection molding layer has its outer end exposed on one side of the box body at most; the second conductive dielectric injection molding layer has its outer end exposed on one side of the box body at most; and the fourth conductive dielectric injection molding layer has its outer end exposed on one side of the box body at most.

[0013] Furthermore, the inner end of the third conductive dielectric injection molding layer is configured as an annular body, which is sleeved with the conductive post of the photosensitive drum.

[0014] Furthermore, the toner cartridge also includes a conductive connector, which connects the inner end of the fourth conductive dielectric injection layer to the roller shaft of the charging roller.

[0015] Furthermore, the conductive connector is installed on one side of the housing and includes a conductive connecting post, a third conductive elastic element, and a conductive fixing post that are bent and connected in sequence. The inner end of the fourth conductive dielectric injection molding layer is connected to the conductive connecting post, and the conductive fixing post is connected to the roller shaft of the charging roller.

[0016] Furthermore, the box body includes a powder hopper box body and a waste powder hopper box body, and the side cover connects the same side of the powder hopper box body and the waste powder hopper box body.

[0017] The beneficial effects of this invention are:

[0018] The toner cartridge provided by the present invention includes a cartridge body, a toner delivery roller, a developing roller, a photosensitive drum, and a charging roller. It also includes a side cover and a first conductive elastic element. The side cover is connected to one side of the cartridge body. A first conductive dielectric injection molding layer, a second conductive dielectric injection molding layer, a third conductive dielectric injection molding layer, and a fourth conductive dielectric injection molding layer are formed by secondary injection molding at intervals. The first conductive elastic element is connected to the inner end of the first conductive dielectric injection molding layer and the toner delivery roller. The inner end of the second conductive dielectric injection molding layer is electrically connected to the developing roller. The inner end of the third conductive dielectric injection molding layer is electrically connected to the photosensitive drum. The inner end of the fourth conductive dielectric injection molding layer is electrically connected to the charging roller.

[0019] In this toner cartridge, each conductive medium injection layer is formed by secondary injection molding on the side cover, avoiding a series of technical problems such as deformation and difficulty in installation that exist with existing conductive steel sheets. In addition, the electrical connection between the first conductive medium injection layer and the toner delivery roller is achieved by setting a conductive elastic element. The above-mentioned elastic electrical connection further improves the stability of the electrical connection. The ingenious structural design ensures the printing quality of the toner cartridge. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the toner cartridge structure in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the side cover of the toner cartridge in an embodiment of the present invention;

[0022] Figure 3 This is a structural schematic diagram of the side cover of the toner cartridge in another embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the conductive dielectric injection molding layer connected to the conductive elastic element and the conductive connector in an embodiment of the present invention;

[0024] Figure 5 This is a partial structural diagram of the toner cartridge in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the first elastic element in an embodiment of the present invention.

[0026] In the diagram, 10—toner cartridge, 11—cartridge body, 12—toner delivery roller, 13—developing roller, 14—photosensitive drum, 141—conductive post, 15—charging roller, 16—side cover, 161—first conductive dielectric injection molding layer, 162—second conductive dielectric injection molding layer, 163—third conductive dielectric injection molding layer, 164—fourth conductive dielectric injection molding layer, 17—first conductive elastic element, 171—small diameter end, 172—middle section, 172a—medium diameter section, 172b—large diameter section, 18—second conductive elastic element, 19—fixed side cover, 21—conductive connector, 211—conductive connecting post, 212—third conductive elastic element, 213—conductive fixing post. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] See Figures 1-6 , Figure 1 This is a schematic diagram of the toner cartridge structure in an embodiment of the present invention. Figure 2 This is a schematic diagram of the side cover of the toner cartridge in an embodiment of the present invention. Figure 3 This is a structural schematic diagram of the side cover of the toner cartridge from another perspective in an embodiment of the present invention. Figure 4 This is a schematic diagram showing the conductive dielectric injection molding layer connected to the conductive elastic element and the conductive connector in an embodiment of the present invention. Figure 5 This is a partial structural diagram of the toner cartridge in an embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of the first elastic element in an embodiment of the present invention.

[0029] This embodiment provides a toner cartridge 10, which relates to the technical field of printing consumables. It solves the technical problems of existing toner cartridges, such as complex installation process, easy deformation, and poor electrical connection stability of the conductive steel sheet. The toner cartridge 10 has a clever structural design. Through the setting of conductive medium injection molding layer and elastic electrical connection, the deformation of conductive steel sheet is avoided. Moreover, the installation process is simple and the electrical connection is highly stable, thus ensuring the printing quality of the toner cartridge 10.

[0030] See details Figures 1-6 The toner cartridge 10 provided by the present invention includes a cartridge body 11, a toner feeding roller 12, a developing roller 13, a photosensitive drum 14 and a charging roller 15, and also includes a side cover 16 and a first conductive elastic element 17, and preferably also includes a second conductive elastic element 18 and a fixed side cover 19.

[0031] In this embodiment, the housing 11 includes a powder hopper housing and a waste powder hopper housing connected together. The powder feeding roller 12, the developing roller 13, the photosensitive drum 14 and the charging roller 15 are all installed in the housing 11 through both ends.

[0032] In this embodiment, see Figures 1-5 The side cover 16 is connected to one side of the box body 11. The side cover 16 is provided with a first conductive medium injection molding layer 161, a second conductive medium injection molding layer 162, a third conductive medium injection molding layer 163 and a fourth conductive medium injection molding layer 164 formed by secondary injection molding of conductive material at intervals; that is, the above-mentioned conductive medium injection molding layers are arranged in the form of electrical circuits on the side cover 16.

[0033] In this embodiment, preferably, injection grooves are provided on the outer side wall, body and inner side wall of the side cover 16. The injection grooves can be curved, straight or other forms. The conductive dielectric injection layer of the above four lines is formed by secondary injection molding in the injection groove.

[0034] More preferably, see Figure 2 and Figure 3 The outer end of the first conductive medium injection molding layer 161 is exposed at most on the outer side of the box body 11; the outer end of the second conductive medium injection molding layer 162 is exposed at most on the outer side of the box body 11; the outer end of the fourth conductive medium injection molding layer 164 is exposed at most on the outer side of the box body 11; the outer end of the third conductive medium injection molding layer 163 is also exposed on the outer side of the box body 11; the outer ends of the above four conductive medium injection molding layers are all exposed and electrically connected to the power supply of the printer, and the remaining parts penetrate through the body of the box body 11 and are arranged on the inner side.

[0035] Specifically, see Figure 2 The outer side of the box body 11 has four protruding steps, and injection grooves are opened on the steps. The outer end of the above-mentioned four-wire conductive dielectric injection layer is formed by secondary injection molding in the injection grooves opened on the steps, which facilitates injection molding and facilitates electrical connection with the power supply of the printer.

[0036] In this embodiment, the inner end of the first conductive medium injection molding layer 161 is electrically connected to the shaft end of the powder feeding roller 12 by connecting the first conductive elastic element 17. The elastic electrical connection makes the electrical connection stable. Specifically, the first conductive elastic element 17 abuts against the inner end of the first conductive medium injection molding layer 161 and the shaft end of the powder feeding roller 12 respectively.

[0037] In this embodiment, preferably, the inner end of the second conductive medium injection molding layer 162 is electrically connected to the shaft end of the developing roller 13 through the connection of the second conductive elastic element 18. The elastic electrical connection of the second conductive elastic element 18 makes the electrical connection stable. Specifically, the second conductive elastic element 18 abuts against the inner end of the second conductive medium injection molding layer 162 and the shaft end of the developing roller 13 respectively.

[0038] In this embodiment, more preferably, the first conductive elastic element 17 and / or the second conductive elastic element 18 are configured as elastic structures including at least the two ends of the small diameter and the middle section of the large diameter, and can be elastic elements such as sheet or spring, without specific limitations.

[0039] In this embodiment, the toner cartridge 10 also includes a fixed side cover 19, which is sandwiched between the side cover 16 and the side end of the cartridge body 11. The fixed side cover 19 is used to connect with the side wall of the toner cartridge body, so that the toner delivery roller 12 and the developing roller 13 and other components can be stably installed. In this embodiment, the middle section of the large diameter of the first conductive elastic element 17 and / or the second conductive elastic element 18 is installed in the fixed side cover 19, and the two ends of the small diameter are respectively disposed on both sides of the fixed side cover 19, and respectively abut against the inner end of the first conductive medium injection molding layer 161 and the shaft end of the toner delivery roller 12 for electrical connection.

[0040] More preferably, in this embodiment, the first conductive elastic element 17 and / or the second conductive elastic element 18 are configured as conical springs comprising at least the two ends of a small diameter and the middle section of a large diameter; in this embodiment, such as Figure 6 As shown, the first conductive elastic element 17 is configured as an axisymmetric spring element, which includes a small-diameter end 171 at both ends and a large-diameter middle portion 172. The middle portion 172 sequentially includes a large-diameter section 172b, a middle-diameter section 172a, and a large-diameter section 172b.

[0041] During installation, the middle diameter section 172 of the middle part 172 is installed and connected to the fixed side cover 19. The large diameter section 172b and the small diameter end 171 of the two symmetrical parts are respectively located on both sides of the fixed side cover 19. They are electrically connected to the inner end of the first conductive medium injection molding layer 161 and the shaft end of the powder feeding roller 12. That is, the middle of the first conductive elastic element 17 is fixed on the fixed side cover 19, and both ends are elastically electrically connected to the inner end of the first conductive medium injection molding layer 161 and the shaft end of the powder feeding roller 12. The electrical connection has good stability.

[0042] The specific structural configuration of the second conductive elastic element 18 in this embodiment may be the same as or different from that of the first conductive elastic element 17.

[0043] The inner end of the third conductive dielectric injection molding layer 163 is electrically connected to the photosensitive drum 14.

[0044] Preferably, such as Figure 5 As shown, the inner end of the third conductive dielectric injection molding layer 163 is configured as an annular body, which is sleeved with the conductive post 141 of the photosensitive drum 14. The conductive post 141 is configured as a nail. The inner end of the annular third conductive dielectric injection molding layer 163 is sleeved around the small end of the conductive post 141 and fixed by the large end to ensure a stable electrical connection of the drum core of the photosensitive drum 14.

[0045] In this embodiment, the inner end of the fourth conductive dielectric injection layer 164 is electrically connected to the charging roller 15.

[0046] Preferably, the toner cartridge 10 further includes a conductive connector 21, and the inner end of the fourth conductive medium injection molding layer is electrically connected to the roller shaft of the charging roller 15 through the conductive connector 21.

[0047] Further as Figure 5 As shown, the conductive connector 21 is installed on one side of the housing 11. The conductive connector 21 includes a conductive connecting post 211, a third conductive elastic member 212, and a conductive fixing post 213 connected in sequence by bending at right angles. The two ends of the third conductive elastic member 212 abut against the conductive connecting post 211 and the conductive fixing post 213, respectively. The inner end of the fourth conductive medium injection molding layer 164 is connected to the conductive connecting post 211. The conductive fixing post 213 is supported and electrically connected to the roller shaft of the charging roller 15. The above arrangement enables the fourth conductive medium injection molding layer 164 to be elastically electrically connected to the roller shaft of the charging roller 15, thereby improving the stability of the electrical connection.

[0048] In this embodiment, the toner cartridge 10 has a first conductive medium injection molding layer 161, a second conductive medium injection molding layer 162, a third conductive medium injection molding layer 163, and a fourth conductive medium injection molding layer 164 formed on the side cover 16 using conductive material through secondary injection molding. This avoids a series of technical problems such as deformation and difficulty in installation that exist with existing conductive steel sheets, and saves labor and other costs. In addition, the electrical connection between the first conductive medium injection molding layer 161 and the toner delivery roller 12, and the electrical connection between the second conductive medium injection molding layer 162 and the developing roller 13 are achieved by setting a conductive elastic element. The above-mentioned elastic electrical connection further improves the stability of the electrical connection. The ingenious structural design ensures the printing quality of the toner cartridge 10.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. The present invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A toner cartridge, the toner cartridge comprising a cartridge body, a toner feeding roller, a developing roller, a photosensitive drum, and a charging roller, characterized in that: The toner cartridge also includes The side cover, which is connected to one side of the box body, is provided with a first conductive medium injection molding layer, a second conductive medium injection molding layer, a third conductive medium injection molding layer and a fourth conductive medium injection molding layer formed by two injection molding processes at intervals; The first conductive elastic element is connected to the inner end of the first conductive medium injection molding layer and the powder feeding roller. The inner end of the second conductive dielectric injection molding layer is electrically connected to the developing roller; The inner end of the third conductive dielectric injection molding layer is electrically connected to the photosensitive drum; The inner end of the fourth conductive dielectric injection layer is electrically connected to the charging roller; The toner cartridge also includes a second conductive elastic element, which is connected to the inner end of the second conductive medium injection molding layer and the roller shaft of the developing roller. The first conductive elastic element and / or the second conductive elastic element are configured as an elastic structure comprising at least two ends of a small diameter and a middle section of a large diameter; The toner cartridge also includes a fixed side cover, which is sandwiched between the side cover and one side of the cartridge body. The middle section of the larger diameter of the first conductive elastic element and / or the second conductive elastic element is installed in the fixed side cover, and the two ends of the smaller diameter are respectively located on both sides of the fixed side cover.

2. The toner cartridge according to claim 1, characterized in that: The first conductive elastic element and / or the second conductive elastic element are configured as conical springs comprising at least the two ends of the minor diameter and the middle section of the major diameter.

3. The toner cartridge according to claim 1 or 2, characterized in that: The first conductive dielectric injection molding layer has its outer end exposed on the outside of the side cover at most; the second conductive dielectric injection molding layer has its outer end exposed on the outside of the side cover at most; the fourth conductive dielectric injection molding layer has its outer end exposed on the outside of the side cover at most.

4. The toner cartridge according to claim 3, characterized in that: The inner end of the third conductive dielectric injection molding layer is configured as an annular body, which is sleeved with the conductive post of the photosensitive drum.

5. The toner cartridge according to claim 4, characterized in that: The toner cartridge also includes a conductive connector that connects the inner end of the fourth conductive dielectric injection layer to the roller shaft of the charging roller.

6. The toner cartridge according to claim 5, characterized in that: The conductive connector is installed on one side of the housing, including a conductive connecting post, a third conductive elastic element, and a conductive fixing post connected in sequence by bending. The fourth conductive dielectric... The inner end of the injection-molded layer is connected to the conductive connecting post, and the conductive fixing post is connected to the roller shaft of the charging roller.

7. The toner cartridge according to claim 6, characterized in that: The box body includes a powder hopper box body and a waste powder hopper box body, and the side cover connects the same side of the powder hopper box body and the waste powder hopper box body.

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